ISSN 0120-2804
printed version

INSTRUCTIONS TO AUTHORS

• Scope and policy
• Form and preparation of manuscripts
• Sending of manuscripts

The Colombian Magazine of Chemistry publishes contributions coming from the investigation in the diverse areas of the chemistry. The content of the articles should be original, unpublished and it should not have been total or partially, send for publication to another magazine .

The writing assumes the right of reproduction of the accepted works. Its publication in another mass media requires permission of the editor.

The works for publication should include:

• Title. should go in Spanish and English, in uppercase, it should not contain formulas neither abbreviations. It should be brief and consistent with the work.
• Name of the Authors. It should be indicated with an asterisk the person to which can go the correspondence.
• Name of the Institution and Address.
• Summary in Spanish and in English. Around 200 words each one. They should show the main results and conclusions making emphasis in the reached achievements. It should be easily understandable without having to appeal to the complete text or some of the references.
• Words Key. The authors should present from three to ten words key or sentences that identify the main aspects of the article .
• Introduction. It should describe the general position of the topic, giving the necessary information in concise and precise form only making reference to the indispensable directly related, considered bibliography for the development of the topic and that it allows to know the current state of the same one. Wide revisions of the bibliography should not be included.
• Materials and Methods. If differentiated sections exist, they should be indicated by means of having headed pertinent The description of the experimentation should be made with the enough details so that other investigators can repeat it. The sources and state of purity of the materials and chemical reagents and the description of teams should only be included when these are specific and novel. The description of procedures applied previously by other authors should be avoided, unless they have been modified, in which case the details of the modification should be included.
• Results and Discussion. The results and discussion should be presented in a precise way including, if it gives to place, charts and figures. The information should not be presented in both forms. The discussion should be brief and focused to the interpretation of the experimental results. It should be avoided to repeat information that has already been mentioned in the text in form of conclusions.
• Bibliography. The accuracy of the bibliographical references is the authors' responsibility. Those references should only be mentioned that figure in the bibliography section. The form in that the references should be given is indicated later on.

Requirements of the Manuscripts

•  Language. The works can be sent in Spanish or in English.

•  Text. The manuscripts should be remit triplicate (original and two copies), writings to double space, appropriate margins ( 3 cm ) and size of letter 12. A copy should be sent in diskette 3½, Microsoft Word programs and graphic in Microsoft Excel or Harvard Graphics, with the final version of the article once has been accepted for publication. The electronic copy should coincide perfectly with the last revision sent in paper. The editors are reserved the right of making a correction of style with the purpose of maintaining the uniformity in the texts of the magazine.

•  Nomenclature, Abbreviations and Units . Nomenclatures and symbols should be used accepted internationally and recognized by the IUPAC (International Union of Puree and Applied Chemistry). it should be indicated among parenthesis the meaning of the abbreviated expressions, registered names when they appear for the first time in the text. It should be used the units of measure of the IF (Systeme International d'Unités). When analytic data are facilitated, the number of copies should be indicated as well as the typical deviation of the results or another magnitude that indicates the reproduction of the same ones. Write the formulas in a clear way, paying special attention to the location of the sub index. The Greek or not very common letters should be identified when they appear for the first time.

•  Characterization of Compound. The physical data and spectroscopic for new compound should be presented in the following order: name of the compound and the number assigned in the text; physical state of the compound (glass, liquid, etc.), physical constants: point of fusion boil point, optic rotation and measures of circular dirigisme if it is optically active ; UV; IR; RMN ¹ H; RMN ¹³ C ; EM.

The data of optic rotation, rotational optic dispersions (DOR) and circular dichroism (AD) they should be presented in the conventional form: [ λ ] D temp . Value (+ or -) en ° (solvent used; c{solvent compounded by size in 100 mL }). Example: [ a ] D 23 + 32° (EtOH; c 0.3210). The curves of DOR presented like a series of values of [ λ ] or of [ θ ] (molecular rotation) to different wave longitudes. Values of DC should be presented like values of elliptical molecular [ θ ] , for example, [ θ ] ₂₅₆ + 21780, [ θ ] ₃₀₇ -16113 absorption differential dichroic, for example, Δε 253 -1,0 (MeOH; c 0,164).

Ultraviolet-visible spectrum: the values of e they should be presented like logarithmic values in parenthesis, example: λ max EtOH nm (log e ): 203 (4.7), etc. Infrared spectrum: (a) The data should be presented in conventional form, example: λmax CHCl ₃ cm ^-1 : 1740, etc The absorption should be presented in wave number and the structural assignment should be indicated among parenthesis after the value of the wave number, for example: 1740 (>C=O), etc. (b) to indicate the intensity of the absorption of the bands (if this is included) the following conventions should be used: d - weak intensity, m - half intensity, v - variable intensity, mf - very strong intensity.

The data of RMN will be presented complete only if these have not been published previously in such a case the most excellent references they should only be shown. The data should be presented as RMN ¹H or RMN ¹³C indicating the frequency of the instrument, the used solvent and the internal standard. The chemical displacements should be expressed in units d relative to the TMS indicating if the sign is a singlet s, doublet d, doublet of doublets dd, triplet t, multiplexer m, etc.

The displacements of RMN ¹³C should be given with a decimal figure and the atom of involved carbon should be specified, using the numeration recommended by the IUPAC (C-1, C-2). The displacements of RMN 1H should indicate the number of involved atoms of hydrogen and its position based on the numeration of the atoms of carbon, preferably according to the norms IUPAC. For example: Espectro RMN 13 C (25,15 MHz, CDCl 3 ): δ 30,1 (t, C-5), 74,1 (d, C-6), 121,7 (d, C-3), 144,2 (s, C-4), etc. Espectro RMN 1 H (100 MHz, CDCl 3 ): δ 0,68 (3H, s, H-18), 0,88 (6H, d, J = 6Hz, H-26 and H-27), 0,90 (3H, d, J = 5 Hz, H-21), 4,34 (1H, q, J6 a ,7 a = 4,5 Hz, J6 a ,7 β = 2Hz, H-6), 4,21 (1H, m, W1/2 = 18 Hz, H-3 a ).

The data of spectrometric of masses will be presented complete only if these have not been published previously, in this case the most excellent references will only be presented. The presentation of the data of spectrometric of masses should follow the recommendations given in Int. J. Mass Spectrum. Ion Processes, 142, 211-240 (1995) and they should indicate the used method (EM (IE); EM (IQ); CG-EM, etc.) and the ionization energy. They will only be presented the important ions diagnosis, the character of the ions fragment with relationship to the molecular ion and the relative intensity to the ion of more intensity. For example: EM (IE) 70 eV, m/z (int. Rel.): 386 [M]⁺ (36), 368 [M-H₂O]⁺ (100), 353 [M-H₂O-Me]⁺ (23), 275 [M-111]⁺ (35), etc. EM (IQ) gas reagent: iso-butane, 200 eV, m/z (int. rel.): 387 [M+H]⁺ (100), 369 [(M+H)-H₂O]⁺ (23), etc. The data of the spectra of masses of high resolution for [M]+ and for the most important ions fragment they can be included with more detail if it is necessary.

Chromatographic in fine layer. a) For analytic CCF the dimensions of the badges can omit the thickness of the badge it is of 0,25 mm . b) Writes in abbreviated form the common adsorbents : Al 2 O 3 (alumina), use silica gel no SiO 2 . c) In the case of CCF preparative details should be included like: thickness of the layer, quantity of applied sample, detection method used to locate the bands and the solvent used to recover the compounds. d) special Form of CCF in impregnated adsorbents they can be presented this way,c) AgNO 3 -sílica gel (1:9) in weight.

Chromatographic of gases . It should be specified to) the used detector: FID, CE, etc. b) The gas of transport and their speed (flow or lineal speed): N₂ to 30 mL min^-1. c) such operation conditions as injection temperatures and detection. d) dimensions of the column and characteristic of the stationary phase. For packed columns, for example, 6 m x 3 mm (internal diameter) packed with SE-30 1% (the characteristics of the support material can be omitted). For capillary columns the column class should be specified, for example: WCOT (wall coated tubular open), SCOT (support coated tubular open), their dimensions and the characteristics of the stationary phase, for example: column WCOT in fused sílica, OV-1 ( 30 m x 0,25 mm d.i., df 0,32 µm). The division (split-up ratio) in the injection port and the injection volume they should also be included.

Liquid Chromatographic of High Efficiency . It should be included to) the solvent or gradient of solvents with the used flow. b) Dimensions of the column (longitude and internal diameter) and stationary phase. c) used detection method: UV, refraction index, etc.

Biochemical Conventions . Excepting the common terms (ATP, NADH, etc.) the abbreviations should be written immediately in complete form among parenthesis after their use for the first time in the text. The name of the enzymes should not generally be abbreviated, excepting the common abbreviations as ATPasa. As much as possible for the enzymes it uses the numbers E.C. and the recommendations of the Nomenclature Committee of the International Union of Biochemistry Molecular and Biology (IUBMB) (www.chem.qmw.ac.uk/iubmb), in “Enzyme Nomenclature, Recommendations", Academic Press, 1992. . In the case of characterization of enzymes includes the following information: activity, good pH, kinetic parameters, activation energy and activation energy for denaturalization.

•  Figures. Each figure is presented in a separated paper. They are numbered consecutively with Arabic numbers. The numeration should be indicated in the text and in the later part of the figure. The size of the numbers should be such that after its reduction, its height is of 2 mm . The pictures they should be sent loose and glossy. In the graphs, the curves should be drawn with a thicker line that the axes. write the names of the axes in a clear form and as close as it is possible. Use different geometric figures (circles, triangles, etc.) and explain their meaning inside the graph or in the foot of the same one. The spectra and similar figures should be clear and of a such size that when decreasing in half or more, comprehensible and defined sign, as we will reproduce it from the original.

•  Charts . The charts should be numbered with Arabic numbers and to go headed by a brief and informative title.

•  Bibliographical References The appointments to the literature should be indicated in Arabic numbers contained among parenthesis and to be enumerated consecutively according to the appearance order inside of dek text. The bibliographical references should follow the format presented in the following examples:

Example 1:. Article published in a magazine:

Corma A.; Martínez Triguero J. (1997). The Uses of MCM-22 ace to Cracking Zeolitic Additive for FCC. J. Catal. 165 (1) 102.

The publication of an article, with extension not bigger than 3 printed pages of the magazine, will have a cost in Colombian pesos, equivalent to 15 dollars. The additional pages will have an equivalent cost of 10 dollars each one. The author will receive 10 copies (reprints) of the printed article.