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Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296

February 2017 issue

Highlighted illustration

Cover illustration: 2,2'-Thiodi­acetic acid (Tda) deprotonates ethyl­enedi­amine and o-phenyl­enedi­amine to form anions with different valencies and different supra­molecular networks. In the former, divalent Tda2- anions form one-dimensional linear supra­molecular chains and these are extended into a three-dimensional sandwich-type supra­molecular network by inter­action with ethyl­enediaminium cations. However, in the latter, monovalent Tda- anions form one-dimensional zigzag supra­molecular chains, which are extended into a three-dimensional supra­molecular network by inter­action with 2-amino­anilinium cations. See Gomathi & Theivarasu [Acta Cryst. (2017), C73, 97-103].

research papers


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The features of the electronic absorption spectrum of the nonsymmetrical {2,3,7,8,12,13,17,18-octa­ethyl-5-[(methyl­imino)­meth­yl]porphyrin}palladium(II) complex are explained by the planar structure of the porphyrin core and the π-system of the imino group orthogonal to it.

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In a three-dimensional framework containing [Zn2(CO2)]n chains in which carboxyl­ate groups bridge tetra­hedral ZnII cations in a synanti mode, the chains are crosslinked by 1,1′-biphenyl-2,2′,4,4′-tetra­carboxyl­ate and 1,4-bis­(1H-imidazol-1-yl)benzene ligands.

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Two- and three-dimensional zinc metal–organic frameworks (MOFs) constructed from 1,5-bis­(2-methyl-1H-imidazol-1-yl)pentane and 5-methyl­isophthalic acid are reported. Both complexes show high stability and good fluorescence in the solid state at room temperature.

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Searches for new tuberculostatic agents are important considering the occurrence of drug-resistant strains of Mycobacterium tuberculosis. The structures of three new potentially tuberculostatic compounds were determined by X-ray diffraction. The mutual orientation of the three main fragments of the compounds, namely an aromatic ring, a di­thio­ester group and a hydrazide group, can influence the biological activity of the compounds.

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A new CuII complex based on the ligands benzene-1,3-di­carboxyl­ate and 1-[(1H-benzotriazol-1-yl)meth­yl]-1H-imidazole (bmi) has been prepared and structurally characterized. The CuII ions are linked by bridging benzene-1,3-di­carboxyl­ates to generate a one-dimensional chain and the bmi ligands extend from opposite sides of the main chain.

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2,2′-Thiodi­acetic acid (Tda) deprotonates ethyl­enedi­amine and o-phenyl­enedi­amine to form anions with different valencies and different supra­molecular networks. In the former, divalent Tda2− anions form one-dimensional linear supra­molecular chains and these are extended into a three-dimensional sandwich-type supra­molecular network by inter­action with ethyl­enediaminium cations. However, in the latter, monovalent Tda anions form one-dimensional zigzag supra­molecular chains, which are extended into a three-dimensional supra­molecular network by inter­action with 2-amino­anilinium cations.

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Three new cobalt(II) chloride adducts with labile ligands have been synthesized from anhydrous CoCl2. The reactions appear to be sufficiently general to be exploited in a variety of syntheses, including those of magnetically inter­esting single-mol­ecule magnet (SMM) and single-ion magnet (SIM) systems.

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Three chalcones containing 2-naphthyl substituents exhibit different crystallization characteristics, with pseudosymmetry in one and conformational disorder in another, although the mol­ecules in all three compounds have very similar conformations. The supra­molecular assembly includes a hydrogen-bonded dimer, a hydrogen-bonded octa­mer and a mol­ecular ladder built from C—H⋯π and C—Br⋯π inter­actions.

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Ce6Cd23Te is a new inter­metallic phase belonging to the extended RE6Cd23T family, up until now known to encompass RE = La–Nd, Sm, and Gd, and T = Sn, Pb, Sb, and Bi. It is the first known compound in the Ce–Cd–Te ternary phase diagram.

Special and virtual issues

Acta Crystallographica Section C is planning a special issue on

NMR Crystallography

The most recent special issue, published in November 2016, concerned

Scorpionates: a golden anniversary

Full details are available on the special issues page.

The latest virtual issue features Coordination polymers, with an introduction by Len Barbour.

What are the 'most read' articles from the recent special issues?

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