| Autor: |
Comerlato, Nadia M., Harrison, William T. A., Howie, R. Alan, Low, John Nicolson, Silvino, Alexandre C., Wardell, James L., Wardell, Solange M. S. V. |
| Zdroj: |
Acta Crystallographica Section C: Crystal Structure Communications; February 2002, Vol. 58 Issue: 2 pm105-m108, 4p |
| Abstrakt: |
The title compounds are salts of the general form (Q+)2[Zn(dmit)2]2−, where dmit corresponds to the ligand (C3S5)−present in both and Q+to the counter‐cations (nBu4N)+[or C16H36N+] and (Ph4As)+[or C24H20As+], respectively. In the first case, Zn is in the 4especial positions of space group C2/cand hence the [Zn(dmit)2]2−dianion possesses twofold axial crystallographic symmetry. Including these, there are now 11 known examples of [Zn(dmit)2]2−or its analogues, with O replacing the exocyclic thione S, and [Zn(dmio)2]2−dianions in nine structures with various Q. Comparison of these reveals a remarkable variation in details of the conformation which the dianion may adopt in terms of Zn coordination, equivalence of the Zn—S bond lengths, displacement of Zn from the plane of the ligand and overall dianion shape. |
| Databáze: |
Supplemental Index |
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