Macedonian Journal of Chemistry and Chemical Engineering (MACED J CHEM CHEM EN)

Publisher: Society of Chemists and Technologists of Macedonia

Current impact factor: 0.53

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 0.533
2013 Impact Factor 0.31
2012 Impact Factor 0.821
2011 Impact Factor 1.079
2010 Impact Factor 0.459
2009 Impact Factor 0.2

Impact factor over time

Impact factor
Year

Additional details

5-year impact 0.65
Cited half-life -
Immediacy index 0.05
Eigenfactor 0.00
Article influence 0.19
ISSN 1857-5552

Publisher details

Society of Chemists and Technologists of Macedonia

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • On open access repositories
    • Publisher's version/PDF may be used
    • Creative Commons Attribution License 3.0
    • Must link to publisher version
    • Publisher last contacted on 02/04/2014
    • All titles are open access journals
  • Classification
    green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: In the refinement of the crystal structure of [Cd(C12H10N4)(C15H9O2)2(CH3OH)]·0.5H2O·CH3OH and [Cd(C12H10N4)1.5(C15H9O2)2]·CH3OH, the lattice water molecule was not located by difference Fourier synthesis but was instead deduced by us-ing SQUEEZE owing to severe disorder of the water molecule in the otherwise ordered crystal structure. Similarly deduced were the two symmetry-independent methanol molecules in [Cd(C12H10N4)(C15H9O2)2(CH3OH)]·0.5H2O·CH3OH and [Cd(C12H10N4)1.5(C15H9O2)2]·CH3OH. The first coordination polymer adopts a chain motif and the second a layer motif; for both, the N-heterocycle functions as a bridge to connect adjacent metal atoms. The sol-vent molecules are presumed to reside in voids, which are themselves connected into channels. The crys-tallographic program Crystal Explorer was used in the illustration of the channels. Crystal data C44H37N4O6.5Cd: FW = 838.18, monoclinic, P21/n, a = 16.7871(4) Å, b = 26.5431(5) Å, c = 18.7034(5) Å, β = 111.915(3)°, V = 7731.7(3) Å3. Crystal data for C49H38N6O5.5Cd: FW = 911.25, monoclinic, P21/c, a = 11.0586(3) Å, b = 23.5007(6) Å, c = 17.3454(5) Å, β = 105.626(3)°, V = 4341.2(2) Å3.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: New data are obtained for minerals from metasomatic rocks of the orogenetic zone related to the "Mixed series" metamorphic complex situated in the Pelagonian massif near the Nežilovo village, about 40 km SW of Veles, Republic of Macedonia. A specific feature of these rocks is the concentration of chalcophile elements (S, As, Sb, Zn, Pb) mainly in the form of oxides and oxysalts, whereas sulfides and sulfosalts are present only in trace amounts. Rock-forming and accessory minerals have been character-ized by electron microscopy, electron microprobe analyses and in part by X-ray diffraction and IR spec-troscopic data. Some of described minerals (Sb-rich analogue of zincohögbomite-2N6S, hydroxyplum-bobetafite, Fe3+-analogue of coronadite) are potentially new mineral species. Some genetic aspects of the formation of oxidized As-Sb-Zn-Pb-rich rocks are discussed.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: The microstructural parameters of a crystalline sample can be determined by a proper analysis of XRD line profile broadening. The observed XRD line profile, h(ε), is the convolution of the instrumental profile, g(ε), and pure diffraction profile, f(ε), caused by small crystallite (coherent domain) sizes, by faultings in the sequence of the crystal lattice planes, and by the strains in the crystallites. Similarly, f(ε) is the convolution of the crystallite size/faulting profile, p(ε), and the strain profile, s(ε). The derivation of f(ε) can be performed from h(ε) and g(ε) by the Fourier transform method, which does not require mathe-matical assumptions. The analysis of f(ε) can be done by the Warren-Averbach method applied to the ob-tained Fourier coefficients. Simplified methods based on integral widths may also be used in studies where a good relative accuracy suffices. The relation among integral widths of f(ε), p(ε) and s(ε) can be obtained if one assumes bell-shaped functions for p(ε) and s(ε). Integral width methods overestimate both strain and crystallite size parameters in comparison to the Warren-Averbach method. The crystallite size parameter is more dependent on the accuracy in the diffraction profile measurement, than it is the strain parameter. The precautions necessary for minimization of errors are suggested through examples. The crystallite size and strain parameters obtained by means of integral widths are compared with those which follow from the Warren-Averbach method. Recent approaches in derivation of microstructure are also mentioned in short.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the refinement of the crystal structure of [Cd(C12H10N4)(C15H9O2)(2)(CH3OH)]center dot 0.5H(2)O center dot CH3OH, the lattice water molecule was not located by difference Fourier synthesis but was instead deduced by using SQUEEZE owing to severe disorder of the water molecule in the otherwise ordered crystal structure. Similarly deduced were the two symmetry-independent methanol molecules in [Cd(C12H10N4)(1.5)(C15H9O2)(2)]center dot CH3OH. The first coordination polymer adopts a chain motif and the second a layer motif; for both, the N-heterocycle functions as a bridge to connect adjacent metal atoms. The solvent molecules are presumed to reside in voids, which are themselves connected into channels. The crystallographic program Crystal Explorer was used in the illustration of the channels. Crystal data C44H37N4O6.5Cd: FW=838.18, monoclinic, P2(1)/n, a = 16.7871(4) angstrom, b = 26.543 1(5) angstrom, c = 18.7034(5) angstrom, beta = 111.915(3)degrees, V=7731.7(3) angstrom(3). Crystal data for C49H38N6O5.5Cd: FW = 911.25, monoclinic, P2(1)/c, a = 11.0586(3) angstrom, b = 23.5007(6) angstrom, c = 17.3454(5) angstrom, beta = 105.626(3)degrees, V = 4341.2(2) angstrom(3).
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: The elemental composition of a multiphase material can be obtained by means of chemical and spectroscopic techniques. However, these techniques face a great difficulty in distinguishing the chemical identity of the phases present in the material and in derivation of the fractions of particular phases. X-ray powder diffraction seems to be an ideal technique for the analysis of a multiphase material. Each crystalline phase of the material gives its characteristic diffraction pattern independently of the other phases; this fact makes it possible to identify the phase of interest and to determine its fraction. The intensities of diffraction lines of a given phase are proportional to its fraction and an appropriate quantitative analysis can be performed after the application of the correction for the absorption of X-rays in the material. The principles of quantitative X-ray diffraction phase analysis of a multiphase material are presented, with a special attention paid to the doping methods. The following methods are described: (i) determination of the fraction of a phase using repeated dopings, (ii) determination of the fraction of a phase using a single doping, (iii) simultaneous determination of the fractions of several phases using a single doping; (iv) determination of the fraction of the dominant phase. The applicability of the doping methods is stated and the optimum conditions to minimize systematic errors are discussed. Recent approaches in quantitative X-ray diffraction phase analysis are also mentioned in short.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: The 100(th) anniversary of the Nobel prize awarded to Max von Laue in 1914 for his discovery of diffraction of X-rays on a crystal marked the beginning of a new branch of science - X-ray crystallography. The experimental evidence of von Laue's discovery was provided by physicists W. Friedrich and P. Knipping in 1912. In the same year, W. L. Bragg described the analogy between X-rays and visible light and formulated the Bragg's law, a fundamental relation that connected the wave nature of X-rays and fine structure of a crystal at atomic level. In 1913 the first simple diffractometer was constructed and structure determination started by the Braggs, father and son. In 1915 their discoveries were acknowledged by a Nobel Prize in physics. Since then, X-ray diffraction has been the basic method for determination of three-dimensional structures of synthetic and natural compounds. The three-dimensional structure of a substances defines its physical, chemical, and biological properties. Over the past century the significance of X-ray crystallography has been recognized by about forty Nobel prizes. X-ray structure analysis of simple crystals of rock salt, diamond and graphite, and later of complex biomolecules such as B12-vitamin, penicillin, haemoglobin/myoglobin, DNA, and biomolecular complexes such as viruses, chromatin, ribozyme, and other molecular machines have illustrated the development of the method. Among these big discoveries the double helix DNA structure was an epochal achievement of the 20(th) century. These discoveries, together with many others of the X-ray crystallography, have completely changed our views and helped to develop other new fields of science such as molecular genetics, biophysics, structural molecular biology, material science, and many others. During the last decade, the implementation of free electron X-ray lasers, a new experimental tool, has opened up femtosecond dynamic crystallography. This highly advanced methodology enables to solve the structures and dynamics of the most complex biological assemblies involved in a cell metabolism. The advancements of science and technology over the 20th and 21(st) centuries are of great influence on our views in almost all human activities. The importance of Xray crystallography for science and technology advocates for its high impact on a wide area of research and declares it as a highly interdisciplinary science. In short, crystallography has defined the shape of the modern world. Focusing on single crystal diffraction, this essay tackles only one field of crystallography; the comprehensive review on X-ray crystallography can hardly be fitted into a single article. The aim with this review was to highlight the most striking examples illustrating some of the milestones over the past century.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: A new nickel(II) saccharinate (sac) complex containing N,N′-bis(2-hydroxyethyl)ethylenediamine (bishydeten), [Ni(bishydeten)2](sac)2, has been synthesized and characterized by elemental analysis, FTIR and single crystal X-ray diffraction. The title complex consists of a [Ni(bishydeten)2]2+ cation and two sac anions. In the complex cation, the nickel(II) ion is coordinated by two neutral bishydeten ligands, leading to a distorted octahedral NiN4O2 coordination, while both sac anions remain outside the coordination sphere. In the crystal, the complex cations and sac anions are connected by an extensive network of N–H∙∙∙N, N–H∙∙∙O, O–H∙∙∙O and C–H∙∙∙O hydrogen bonds into a three-dimensional supramolecular lattice.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: The elemental composition of a multiphase material can be obtained by means of chemical and spectroscopic techniques. However, these techniques face a great difficulty in distinguishing the chemical identity of the phases present in the material and in derivation of the fractions of particular phases. X-ray powder diffraction seems to be an ideal technique for the analysis of a multiphase material. Each crystal-line phase of the material gives its characteristic diffraction pattern independently of the other phases; this fact makes it possible to identify the phase of interest and to determine its fraction. The intensities of dif-fraction lines of a given phase are proportional to its fraction and an appropriate quantitative analysis can be performed after the application of the correction for the absorption of X-rays in the material. The principles of quantitative X-ray diffraction phase analysis of a multiphase material are pre-sented, with a special attention paid to the doping methods. The following methods are described: (i) de-termination of the fraction of a phase using repeated dopings, (ii) determination of the fraction of a phase using a single doping, (iii) simultaneous determination of the fractions of several phases using a single doping; (iv) determination of the fraction of the dominant phase. The applicability of the doping methods is stated and the optimum conditions to minimize systematic errors are discussed. Recent approaches in quantitative X-ray diffraction phase analysis are also mentioned in short.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering
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    ABSTRACT: As a tribute to the major contribution made by Academician Gligor Jovanovski to the field of Mineralogy in Macedonia, this paper promotes the potential role that minerals can have as a future source of inspiration in identifying novel materials for sustainable energy storage in general, and for advanced Li-ion batteries in particular. We exemplify this by indicating the innovative use of polyanions in novel Li-ion battery cathode materials such as the olivine lithium iron phosphate (LiFePO4), and in an even newer material - the orthosilicate lithium iron silicate (Li2FeSiO4). Both materials have strong intrinsic links to mineralogy - and illustrate well how mineralogy can lead to new material breakthroughs in this and other areas of modern technology.
    No preview · Article · Jan 2015 · Macedonian Journal of Chemistry and Chemical Engineering