Hydrogen bonding patterns in pyrazole Pt(II- and IV) chloride complexes |
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| Authors: | Anatoly V. Khripun Vadim Yu. Kukushkin |
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| Affiliation: | a St. Petersburg State University, 198504 Stary Petergof, Russian Federation
b Department of Chemistry, University of Joensuu, P.O. Box 111, FI-80101, Joensuu, Finland |
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| Abstract: | The solid-state packing arrays of the platinum(II) trans- and cis-[PtCl2(PzH)2] (1 and 2) and platinum(IV) trans- and cis-[PtCl4(PzH)2] (3 and 4) complexes have been examined and the occurrence of N-H ? Cl hydrogen-bonding associations in those structures has been discussed. Although different packing motifs are observed, in all cases molecules are interacting mostly via NH ? Cl and CH ? Cl associations. The square planar 1 and 2 form stacked arrays of PtCl2(PzH)2, which are supported by NH ? Cl and CH ? Cl hydrogen bonding. The isomeric structure of the complexes and orientation of the PzH rings determine NH ? Cl bonding mode (intermolecular or intramolecular) and also the extent of the platinum-platinum interaction. The synthetic procedures for the preparation of 1-4 along with elemental and X-ray analyses, TG/DTA, FAB+-MS, IR, and 1H and 13C{1H} NMR data are also given in this article. |
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| Keywords: | Platinum compounds Pyrazole Solid state packing Hydrogen bonds |
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