Crystal and Molecular Structure of Bis(1-Vinylimidazole)diacetatozinc |
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Authors: | L V Baikalova V I Sokol V N Khrustalev E A Zel'bst B A Trofimov |
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Institution: | (1) Favorskii Irkutsk Institute of Chemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia |
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Abstract: | The crystal and molecular structure of bis(1-vinylimidazole)diacetatozinc (C14H18N4O4Zn), a highly effective antidote and antihypoxic drug, was determined R1 0.0335 for 8902 unique reflections with I > 2σ(I) and wR2 0.0931 for all 10 752 unique reflections]. The triclinic unit cell contains two independent molecules of the complex, A and B. These molecules have short contacts O?H-C. The zinc atoms in molecules A and B have distorted tetrahedral coordination with the coordination sites occupied by the imidazole nitrogen atoms and acetate oxygen atoms. The lengths of the Zn-N bonds (2.019–2.050 Å) and Zn-O bonds with three acetate groups (1.956–1.958 Å) are typical for zinc complexes, whereas the Zn-O3 bond with one of the acetate groups in molecule A is somewhat longer, 2.009(1) Å; also, there is an additional contact of the zinc atom with the carbonyl oxygen atom of this group (Zn-O4 2.498 Å). |
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