Copper(i) and silver(i) complexes of 9,9-dimethyl-4,5-bis(di-tert-butylphosphino)xanthene: photophysical properties and structural rigidity under pressure†,Photochemical & Photobiological Sciences

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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 rigidity under pressure†
Photochemical & Photobiological Sciences ( IF 2.7 ) Pub Date : 2018-02-19 00:00:00 , DOI: 10.1039/c7pp00432j
Sarah Keller _{1,

2,

3,

4} , Alessandro Prescimone _{1,

2,

3,

4} , Edwin C. Constable _{1,

2,

3,

4} , Catherine E. Housecroft _{1,

2,

3,

4}

Affiliation

The heteroleptic complexes [Cu(tBu-xantphos)(bpy)][PF₆] and [Ag(tBu-xantphos)(bpy)][PF₆], where tBu-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 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′-tBu₂bpy) 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 tBu-xantphos ligands.

中文翻译：

9,9-二甲基-4,5-双（二叔丁基膦基）x吨的铜（i）和银（i）配合物：压力下的光物理性质和结构刚度†

杂合络合物[Cu（t Bu-xantphos）（bpy）] [PF ₆ ]和[Ag（t Bu-xantphos）（bpy）] [PF ₆ ]，其中t Bu-xantphos = 9,9-dimethyl-4合成了5-5-双（二叔丁基膦基）氧杂蒽和bpy = 2,2'-联吡啶，并研究了它们的光物理性质。给出了在环境压力和升高的压力下化合物的单晶X射线衍射研究。压力增加几乎不会引起结构扰动。对于铜（I）配合物，将N ^ N配体从bpy变为6-甲基-2,2'-联吡啶（6-Mebpy），6-bromo-2,2'-联吡啶（6-Brbpy ）和4,4'-二（叔丁基）-2,2'-联吡啶（4,4'-t Bu ₂ bpy）也进行了研究。在溶液和固态中，铜（I）络合物的发射都很微弱，这归因于t Bu-xantphos配体的叔丁基取代基的振动猝灭作用。

更新日期：2018-02-19

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