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Copper(I) and silver(I) complexes of 9,9-dimethyl-4,5-bis(di-tert-butylphosphino)xanthene: photophysical properties and structural perturbation under pressure

Keller, Sarah and Prescimone, Alessandro and Constable, Edwin C. and Housecroft, Catherine E.. (2018) Copper(I) and silver(I) complexes of 9,9-dimethyl-4,5-bis(di-tert-butylphosphino)xanthene: photophysical properties and structural perturbation under pressure. Photochemical and Photobiological Sciences, 17 (4). pp. 375-385.

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Abstract

The heteroleptic complexes [Cu( t Bu-xantphos)(bpy)][PF 6 ] and [Ag( t Bu-xantphos)(bpy)][PF 6 ], where t Bu-xantphos = 9,9-dimethyl-4,5-bis(di- tert -butylphosphino)xanthene and bpy = 2,2'-bipyridine have been synthesized and their photophysical properties investigated. Single crystal X-ray diffraction studies of the compounds under ambient and increased pressure allow are presented; increase in pressure results in little structural perturbation. For the copper(I) complexes, the effects of changing the N^N ligand from bpy to 6-methyl-2,2'-bipyridine (6-Mebpy), 6-bromo-2,2'-bipyridine (6-Brbpy), and 4,4'-di( tert -butyl)-2,2'-bipyridine (4,4'- t Bu 2 bpy) were also investigated. Emissions from the copper(I) complexes are weak, both in solution and the solid state and this is attributed to vibrational quenching effects of the tert -butyl substituents of the t Bu-xantphos ligands
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Keller, Sarah and Prescimone, Alessandro
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Royal Society of Chemistry
ISSN:1474-905X
e-ISSN:1474-9092
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:23 Apr 2018 07:03
Deposited On:23 Apr 2018 07:03

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