Title

Synthesis, Structure, and Properties of Trichloro- and Tribromo(2-(2′-pyridyl)quinoline)gold(III)

Abstract

The title complexes Au(pq)Cl3 and Au(pq)Br3 (pq = 2-(2′-pyridyl)quinoline) have been synthesized and their crystal and molecular structures determined from X-ray data obtained by counter methods. The compounds are isomorphous and crystallize in the space group P212121, with Z = 4 in unit cells of dimensions a = 7.711 (7), b = 10.04 (1), and c = 19.34 (4) Å (Au(Pq)Cl3) and a = 8.050 (4), b = 10.13 (2), and c = 19.52 (1) Å (Au(pq)Br3). The structures were solved by the heavy-atom method and refined by full-matrix least squares to R = 6.5% (Au(pq)Cl3, 1511 reflections) and R = 5.1% (Au(pq)Br3, 907 reflections). The compounds consist of discrete diamagnetic five-coordinated molecules. The distribution of the ligands about the metal is approximately square pyramidal with the axial ligand displaced from the vertical and at a relatively great distance from the metal, so that they may also be described as strongly distorted square planar. The direction of the distortion is such as to reduce the energy of the high-spin (triplet) state but not enough to produce a high-spin ground state. © 1978 American Chemical Society.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1978 American Chemical Society (ACS), All rights reserved.


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