Braese, Jens and Schinabeck, Alexander and Bodensteiner, Michael and Yersin, Hartmut and Timoshkin, Alexey Y. and Scheer, Manfred (2018) Gold(I) Complexes Containing Phosphanyl- and Arsanylborane Ligands. CHEMISTRY-A EUROPEAN JOURNAL, 24 (40). pp. 10073-10077. ISSN 0947-6539, 1521-3765
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The structural and photophysical properties of a series of new Au-I compounds have been studied. The reactions of AuCl(tht) with the phosphanyl- and arsanylboranes RREBH2NMe3 (E=P, As; R=H, Ph; R=H, Ph, tBu) afford the complexes [AuCl(RREBH2NMe3)]. In the solid state, [AuCl(H2PBH2NMe3)](2) (2a) is a dimer showing unsupported intermolecular aurophilic interactions with short AuAu distances. In contrast, [AuCl(H2AsBH2NMe3)](n) (2b) aggregates to form 1D chains. Organic substituents on the pnictogen atoms lead to discrete molecules in [AuCl(RRPBH2NMe3)] (2c: R=H, R=tBu; 2d: R=R=Ph). To increase the aurophilicity, the ionic homoleptic complexes [Au(RREBH2NMe3)(2)][AlCl4] (3a-d) have been synthesized, for which 3a,b form chains in the solid state and exhibit luminescence. The emissions show a drastic redshift with temperature decrease, correlating with decreasing AuAu distances. DFT calculations provide insight into the bonding situation of the products.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CRYSTAL-STRUCTURES; COORDINATION-COMPLEXES; AUROPHILIC ATTRACTION; THERMAL-EXPANSION; METAL-COMPLEXES; LUMINESCENCE; CATALYSIS; PRESSURE; ANIONS; CHAINS; arsenic ligands; aurophilic interactions; gold; luminescence; phosphorus ligands |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Manfred Scheer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Feb 2020 09:55 |
| Last Modified: | 13 Feb 2020 09:55 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14228 |
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