Published irregular intervals, Química Nova is the official organ of the Sociedade Brasileira de Química - SBQ.

The journal publishes articles in Portuguese, Spanish and English, with the results of original researches, review articles, notes on new methods and technics, education and general issues in the area of chemistry.

Articles submitted to the journal are analysed by ad hoc reviewers. Publication of Química Nova is in the charge of the editorial board, and its policy and planning are responsibility of the advisory editorial board.

Its abbreviated title is Quím. nova, which should be used in bibliographies, footnotes and bibliographical references and strips.

Articles published by the Química Nova are abstracted or indexed in:

• Chemical Abstracts
• ISI - Institute for Scientific Information Citation Databases

All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY.

The publication of the journal receives financial support from:

• Nelson Henrique Morgon, Universidade Estadual de Campinas, São Paulo, SP – Brasil (Editor Chefe)
• Jorge Mauricio David, Universidade Federal da Bahia, Bahia, BA – Brasil
• Giovanna Machado, Universidade Federal de Pernambuco, PE - Brasil

• Boniek G. Vaz - Universidade Federal de Goiás Brasi
• Eduardo M. Richter - Universidade Federal de Uberlândia, Minas Gerais, MG - Brasil
• Elisama Vieira dos Santos Universidade Federal do Rio Grande do Norte, Natal, RN - Brasil
• Giovanni W. Amarante - Universidade Federal de Juiz de Fora, Juiz de Fora, MG - Brasil
• Luiz G. de F. Lopes Universidade Federal do Ceará, Fortaleza, CE - Brasil
• Marcos A. Bizeto - Universidade Federal de Sao Paulo, São Paulo, SP - Brasil
• Nyuara Araújo da Silva Mesquita Universidade Ferderal de Goiás, Goiânia, GO – Brasil
• Renato S. Freire Universidade de Sao Paulo, São Paulo, SP - Brasil

• Ursula Brocksom, Sociedade Brasileira de Química, São Paulo, SP - Brasil

• Adélio A. S. C. Machado, Faculdade de Ciências do Porto, Porto – Portugal
• Alberto Wisniewski Jr. Universidade Federal de Sergipe, SE - Brasil
• Glaura G. Silva, Universidade Federal de Minas Gerais, Belo Horizonte, MG – Brasil
• Hamilton Varela Universidade de Sao Paulo, São Carlos, SP - Brasil
• Heloise O. Pastore, Universidade Estadual de Campinas, Campinas, SP – Brasil
• Joan Josep Solaz-Portolés, Universitat de València, Valência – Espanha
• Joao H. G. Lago Universidade Federal do ABC, São Bernardo do Campo, SP - Brasil
• Jorge Calderon, Universidad de Antioquia, Medellín - Colômbia
• Jose H. Zagal, Universidad de Santiago de Chile, Santiago - Chile
• Julio C. Afonso, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ – Brasil
• Leandro H. de Andrade Universidade de Sao Paulo – SP, Brasil
• Marco T. Grassi Universidade Federal do Paraná, Curitiba, PR - Brasil
• Marcus T. Scotti Universidade Federal da Paraíba, João Pessoa, PB - Brasil
• Maria Alejandra Molina Universidad Nacional de Rio IV, Buenos Aires - Argentina
• Pedro de Lima-Neto Universidade Federal do Ceará, Fortaleza, CE - Brasil
• Roberto de B. Faria Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ - Brasil
• Sibele B. C. Pergher Universidade Federal do Rio Grande do Norte, Natal, RN - Brasil
• Simoni M. P. Meneghetti Universidade Federal de Alagoas, Maceió, AL - Brasil

Articles suitable for publication in the journal Química Nova are those written in Portuguese, English, or Spanish and that cover the traditional fields of chemistry as well as articles on chemical education, the history of chemistry, science policy, etc., besides articles on related fields, as long as they have a substantial chemical content. Publications may be in the form of Original Articles, Articles on Education, Technical Notes, General Subjects, and Review Articles.

Original Articles: for communicating original research. Articles should include the sections Introduction, Experimental, Results and Discussion, Conclusions, and References as appropriate for the work being submitted. An Original Article, including figures, tables, diagrams, etc., should require no more than 25 pages.

Articles on Education: for communicating on topics related to learning and teaching chemistry at undergraduate/postgraduate levels and for disseminating innovative experiments useful for introducing chemical phenomena to undergraduates and postgraduates. These articles should be no longer than 25 pages (including figures, tables, diagrams, etc.).

Technical Notes: for communicating methods, techniques, equipment, and accessories developed in the author's laboratory, as long as they have a substantial chemical content. Notes should include Introduction, Experimental, Results and Discussion,Conclusions, and References as appropriate for the work being submitted. Technical Notes should be no longer than 25 pages (including figures, tables, diagrams, etc.).

General Subjects: for communicating on topics of general interest for chemists, such as science policy, undergraduate and postgraduate programs, history of Chemistry, etc. These articles should be no longer than 40 pages (including figures, tables, diagrams, etc.).

Review Articles: for communicating progress in a specific field of chemistry, with the objective of providing a critical account of the state-of-the-art from the point of view of the highly qualified and experienced specialist. Review Articles should be no longer than 40 pages (including figures, tables, diagrams, etc.). 

It is essential for authors to have publications in the field reviewed, attesting to their experience and qualification. Before submitting the manuscript, author(s) should send an e-mail to the editors with an abstract of the review and a letter explaining the relevance of the publication. The material will be examined by the editors, and once approved, authors will be requested to submit the full manuscript, according to Química Nova guidelines. This manuscript will then be submitted to referees to be evaluated. Acceptance of submission does not guarantee publication of the final manuscript.

Manuscripts submitted to QN are evaluated by, at least, a couple of ad hocreviewers (from Brasil and overseas), experts in the field discussed, who can eventually belong to the Editorial Board.

There are no fees for submitting manuscripts or for its evaluation, only for publication. Those fees apply only in case of acceptance. More info on publication fees can be found at http://quimicanova.sbq.org.br/conteudo.asp?page=14

Copyright License
The submission of a manuscript implies that it has not been previously published, that it is not under consideration for publication elsewhere, and that it will not be simultaneously published elsewhere in the same format without the written permission of the Editors. Additionally, it implies that the submitting author has the consent of all authors. By submitting a manuscript, the authors agree that their paper's copyright is transferred to the Brazilian Chemical Society (Sociedade Brasileira de Química, SBQ) if and when the manuscript is accepted for publication. Accepted manuscripts and illustrations become the property of the SBQ.

Manuscript Organization
Authors should present their material with utmost conciseness and clarity. The Introduction section should clearly and briefly identify, with relevant references, both the nature of the problem under investigation and its background. An Introductionconsisting of an extensive literature review is not acceptable. 

The Experimental section may precede or follow the Results and Discussion section, but must be separated from it. TheConclusions section, which briefly summarizes the main conclusions of the work, must be present immediately after the Results and Discussion section. 

Experiments should be described in sufficient detail to enable other researchers to repeat them. The degree of purity of materials and their quantities should be reported. Descriptions of established procedures are unnecessary. An apparatus should be described only if it is non-standard. Commercially available instruments should be referred to by their suppliers and models.

All new compounds should be fully characterized using analytical methods, which include spectroscopy and elemental analyses. High-resolution mass spectra may substitute for elemental analyses if accompanied by unequivocal proof of sample purity (melting points, copies of NMR spectra, etc.). For compounds prepared in enantiomerically pure or enriched form, specific optical rotation must be reported. In cases where enantiomeric excess is determined by chromatographic and/or spectroscopic techniques, copies of the appropriate chromatograms and/or spectra should be included as Supplementary Material (please see Supplementary Material section). 

Many theoretical and computational papers use a routine procedure based on a well-documented method, be it semi-empirical or ab initio. In such cases, it is sufficient to name the particular variant (referring to key papers in which the method has been developed), to cite the computer program used, and to indicate briefly any modifications made by the author. 
It is the authors' responsibility to obtain permission from the copyright holder for the reproduction of figures from other publications. The obtained Copyright Permission should be sent along with other files when submitting the manuscript. Suitable acknowledgement of reproduction must be provided in the captions.

Manuscripts written in English, considered for further evaluation, are expected to be accompanied with a certificate from a professional editing company, attesting that the text was submitted for a formal review of English language and grammar. The certificate should be sent through the platform ScholarOne, when submitting the revised version of the manuscript.

Preparation of Manuscripts

General Overview
Times New Roman font (12-point, black) and 1.5-line spacing should be used for the text of the manuscript. Pages should be numbered consecutively in the bottom right corner. Lines, titles, and subtitles of the sections must not be numbered. Section headings should be typed in bold capital letters, the subtitles in bold, and sub subtitles just in italics. 

Supplementary Material should be the last element of the manuscript, and should contain relevant and complementary information to that already presented in the manuscript (please see Supplementary Material section).

Section-wise Overview
The first page should contain the Graphical Abstract (please see the Graphical Abstract section), the manuscript title (upper case and bold), the names of the authors (in bold), and the address(es) of the institution(s) where the work was conducted. If the address of the institution where the work was carried out is different from the present address of any of the authors, a footnote indicating the current position of the co-author can be included. If the authors are affiliated to different institutions, the addresses of the institutions should be listed in a sequence and indicated by sequential letters.

Example:
José A. Benício^a, Maria C. Cavalcante^b e João D. de Almeida^a,* 
^aDepartamento de Química, Universidade Estadual de Maringá, 87020-900 Maringá-PR, Brasil
^bDepartamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo-SP, Brasil
*e-mail: jalmeida@dq.uem.br

The first unit of the address should be the department where the work was conducted, following which the faculty/institute, university, zip code, city, and country should be indicated. Laboratory, postgraduate programs, and courses should not be included in the address. As shown in the example, the corresponding author should be indicated with an asterisk (*) and her/his email address placed right after the address(es). The second page should contain the title and abstract of the work, both in English. The length of an Abstract should not exceed two hundred (200) words. In addition, 3-5 keywords (keywords), also in English, should be included below the abstract. The text should start from the third page of the manuscript. 

Throughout the text, the author should note the following rules:

• Words or phrases in Latin or in a language different from that used in the manuscript should be in italics.
• Scientific names of species should be in italics, with the first letter of the name in upper case.

Examples: 
The experiments were conducted in situ; 
The bacterium Escherichia coli.;

• All units must be separated from the respective values using a single space (including degree Celsius). The same rule should be applied to units in sequence.

Examples:
10 ºC;
 15 mg L⁻¹ (avoid mg/L);
10 m s⁻² (avoid m/s²);
Attention: all nomenclature should be consistent, clear, unambiguous, and in accordance with the nomenclature rules established by the IUPAC, the International Union of Biochemistry, the Abstracts Service, the Nomenclature Committee of the American Chemical Society, or other appropriate bodies. Units and symbols should follow IUPAC recommendations. Authors should avoid the use of units that are not part of the SI.

Guidelines for Graphical Elements and Tables
Graphs and Figures: texts, axis labels, and any other textual information accompanying the graphic elements throughout the work should be consistent with regards to the source, font size, spacing, and color. For computer-generated artwork, a colored background or shading is discouraged.

Structural Formulas and Chemical Equations: all chemical structures and equations should have the same font throughout the manuscript.
Equations: equations throughout the manuscript should be created using an equation editor (e.g., MathType, Equation) and should be numbered consecutively using arabic numerals.

Photographs: photographs should be highly contrasted, positive, and not mounted. When necessary, the scale should be indicated on the photograph itself, not below. No photos of commercial equipment will be accepted.

Tables: tables should be formatted to provide information to the reader in a straightforward manner. Shades of color and bold lettering are discouraged. Authors should indicate any extra information as a footnote with superscripted letters (e.g., a, b, c) at the appropriate locations.

Graphical Abstract: the figure should summarize the content of the manuscript in a concise, pictorial form, and should be designed to capture the attention of a wide readership. The author should not duplicate a graphic from the main text of the article but present a new figure based on a key structure, reaction, equation, concept, graphic, theorem, etc. Artistic and imaginative use of colors in the Graphical Abstract is encouraged. The use of photos of commercial equipment is not appropriate.

Attention: the high-resolution image (*.tiff /*.jpg or other formats that can be edited) should fit in an area no larger than 8 cm (width) by 4 cm (height) [the author should ensure that the annotations in the image are readable at these dimensions]. Along with the figure for Graphical Abstract, a short explanatory text (three lines, at the most) should be included below it.

Guidelines for Citations and Reference list
Graphical elements and tables should be numbered and cited in text using the full form of word (the use of abbreviations is discouraged) where the first letter is in uppercase. 

Examples:
. as seen on Figure 1. (do not use Fig. 1)
Table 2 shows the obtained results. (do not use Tab. 2)
All references should be numbered consecutively in the order of their first citation in text as superscripted numerals after punctuation, without parentheses or brackets. Two or more references cited together should be separated by commas. Citations of three or more consecutive references should be grouped together, using the hyphen (-).

Examples:
sodium salicylate,^1-3
Nishide et al.,⁴
by reduction of chromic acid.^4-8,12,14
In the References section, the journal title abbreviations should be those used in the Chemical Abstracts Service Source Index (http://cassi.cas.org). If the journal is not listed in CASSI, the full title of the journal should be typed.

The format for year, volume, and pages presented below for various types of literature should be followed. Punctuation, spacing, and regular/bold/italics font-type should be checked carefully. Manuscripts with references that do not adhere to the norms of the journal will be returned to the author until the errors are checked and corrected.

Examples:
1. Varma, R. S.; Singh, A. P.; J. Indian Chem. Soc. 1990, 67, 518.
2. If the journal cannot be easily accessed, its Chemical Abstracts number should be included.
Provstyanoi, M. V.; Logachev, E. V.; Kochergin, P. M.; Beilis, Y. I.;Izv. Vyssh. Uchebn. Zadev.; Khim. Khim. Tekhnol. 1976, 19, 708.(CA 85:78051s).
3. If an accepted article does not have publisher-assigned page numbers, the DOI number should be cited.
Vidotti, M.; Silva, M. R.; Salvador, R. P.; de Torresi, S. I. C.; Dall'Antonia, L. H.; Electrochimica Acta (2007), doi:10.1016/j.electacta.2007.11.029.
4. The use of composite references, instead of a list of separate references, is encouraged. 
Varela, H.; Torresi, R. M.; J. Electrochem. Soc. 2000, 147, 665; Lemos, T. L. G.; Andrade, C. H. S.; Guimarães, A. M.; Wolter-Filho, W.; Braz-Filho, R.; J. Braz. Chem. Soc. 1996, 7, 123; Ângelo, A. C. D.; de Souza, A.; Morgon, N. H.; Sambrano, J. R.;Quim. Nova 2001, 24, 473.

Patents should be identified as follows (where possible, the Chemical Abstracts number should be provided):
5. Hashiba, I.; Ando, Y.; Kawakami, I.; Sakota, R.; Nagano, K.; Mori, T.; Jpn. Kokai Tokkyo Koho 79 73,771 1979.(CA 91:P193174v)
6. Kadin, S.B.; US pat. 4,730,004 1988. (CA 110:P23729y)
7. Eberlin, M. N.; Mendes, M. A.; Sparrapan, R.; Kotiaho, T.; Br PI 9.604.468-3, 1999.

Books
with editors 
8. Regitz, M. In Multiple Bonds and Low Coordination in Phosphorus Chemistry; Regitz, M.; Scherer, O. J., eds.; Georg Thieme Verlag: Stuttgart, 1990, chap. 2.
without editors 
9. Cotton, F.A.; Wilkinson, G.; Advanced Inorganic Chemistry, 5th ed., Wiley: New York, 1988.

Computer Programs (software)
10. Sheldrick, G. M.; SHELXL-93; Program for Crystal Structure Refinement; University of Göttingen, Germany, 1993.

Thesis 
11. Velandia, J. R.; Doctoral Thesis, Federal Rural University of Rio de Janeiro, Brazil, 1997.

Presentations at Meetings 
12. Ferreira, A. B; Brito, S. L.; Abstracts, 20th Annual Meeting of the Brazilian Chemical Society, Poços de Caldas, Brazil, 1998.

Web Pages 
13. http://www.sbq.org.br/jbcs, accessed June 2001.

Unpublished material 
for articles accepted for publication
Magalhães, U. H.; J. Braz. Chem. Soc., in press.
for articles submitted but not yet accepted
Magalhães, U. H.; J. Braz. Chem. Soc., submitted.
for unpublished articles or personal communications
Magalhães, U. H.; unpublished or Magalhães, U. H.; personal communication.
Unpublished results must only be cited with explicit permission from those who obtained them.
Whenever possible, authors should follow IUPAC recommendations and use the International System of Units.

Manuscripts Including NMR, IR, Mass Spectra, etc.
Whenever a compound is synthesized or identified (new or already known), it is imperative that spectral data (data and spectra) as Supplementary Material (see Supplementary Material section) is submitted along with the manuscript.

Supplementary Material
This resource was created so that the main text of the manuscript would contain only the strictly necessary figures and tables. 
Contents for Supplementary Material should be placed at the end of the manuscript, after the References section. Whenever theSupplementary Material is present, a section named Supplementary Material, describing its content, should be created in the main text of the manuscript right after Conclusions. The text should also indicate the free access to the Supplementary Materialat Química Nova website (http://www.quimicanova.sbq.org.br/). 

Graphical elements and tables for Supplementary Material should be sequentially numbered as in the following examples: Figure 1S, Figure 2S, Table 1S, Table 2S.

The Supplementary Material is a separate document. If references are used, they should be listed at the end of theSupplementary Material and numbered as 1S, 2S, etc.

Editors, at any time of the editing process, may ask authors to remove portion(s) of the manuscript and include it in theSupplementary Material.

Química Nova offers only online submission.
Manuscripts are submitted using the ScholarOne system by clicking on the link "Submission online (ScholarOne)".

All authors must have their names registered in the platform. Thus, during submission, fill the requested forms and provide the correct email addresses of the co-authors.
At the ScholarOne-QN system, all files need to be uploaded INDIVIDUALLY:

1. Main document (full.doc), including all figures and tables (including their captions), should be inserted after their first mention in the text. This file should be created using the available template. If the manuscript contains Supplementary Material, it should be added at the end of the main document.
2. All original files of figures (including the Graphical Abstract) should be uploaded in any of the following formats: jpg, tiff, opj, xls, cdx, etc. For example, if the manuscript has six figures, you must individually upload each of the six original files, along with the main document that already contains all the figures.

Note:
- figures that are images must have high resolution (minimum 300 dpi);
- do not send the figures inserted into a .doc file. Send all the original files individually (in opj, xls, tiff, etc. formats). This will expedite the review of your manuscript and publication process on acceptance.

Warning: From the second issue of vol. 38 onwards, Química Nova will be printed only in black and White, except for graphical abstracts. When composing the figures, one should keep in mind that they will be converted at the time of printing, avoiding loss of information based solely on the colors. The online version of Química Nova will remain to be published in color.

3. Single .docx or .doc file containing all tables;
4. Original files of figures in the Supplementary Material.

The editors of Química Nova reserve the right to make minor changes to the manuscript, if necessary, so that the paper conforms to the norms of the Journal or to improve the style without modifying the content of the article. Whatever the nature of the manuscript, it should be original in terms of methodology, information, interpretation, and critique. The quality of the article can be attested by two referees indicated by the editors.