Crystal structures of bis(diethylenetriamine)cobalt(III) Heptachlorodimercurate(II)mer-[Co(Dien)2]Hg2Cl7 and (diethylenetriamine)glycylglycinato(1-) cobalt(III) hexachlorodimercurate(II) [Co(Dien)HGlygly]Hg2Cl6 |
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Authors: | I. F. Burshtein A. L. Poznyak |
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Affiliation: | (1) Siemens Analytical X-Ray Instrumentation Inc., Madison, MI;(2) Institute of Molecular and Atomic Physics, Academy of Sciences, Minsk, Belarus Republic |
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Abstract: | An X-ray diffraction analysis was performed for crystalline [Co(Dien)2]Hg2Cl7 (a = 14.452(2), b = 9.831(1), c = 15.967(2) åΒ = 97.17(1)?, space group P21/c, Z = 4) and [Co(Dien)HGlygly]Hg2Cl6 (a = 7.693(1), b = 14.439(2), c = 19.961(2) å, Β = 100.31(1)?, space group P21 Z = 2), where Dien is diethylenetriamine and HGlygly is the glycylglycine anion [H2NCH2C(OH) = NCH2CO2]. The anionic moiety is represented by isolated centrosymmetric ions [Hg4Cl14]6- in the former and by infinite chains [Hg2Cl6] n 2n- in the latter (the chain is composed of two alternating vertex-sharing nonequivalent tetrahedral groups HgCl4. In the cobalt(III) complex cations, the extreme donating atoms of the Dien and HGlygly ligands are in the trans positions of the coordination octahedron. |
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