Luminescent Phosphine Gold(I) Thiolates: Correlation between Crystal Structure and Photoluminescent Properties in [R<sub>3</sub>PAu{SC(OMe)NC<sub>6</sub>H<sub>4</sub>NO<sub>2</sub>-4}] (R = Et, Cy, Ph) and [(Ph<sub>2</sub>P-R-PPh<sub>2</sub>){AuSC(OMe)NC<sub>6</sub>H<sub>4</sub>NO<sub>2</sub>-4}<sub>2</sub>] (R = CH<sub>2</sub>, (CH<sub>2</sub>)<sub>2</sub>, (CH<sub>2</sub>)<sub>3</sub>, (CH<sub>2</sub>)<sub>4</sub>, Fc)
作者:Soo Yei Ho、Eddie Chung-Chin Cheng、Edward R. T. Tiekink、Vivian Wing-Wah Yam
DOI:10.1021/ic0608243
日期:2006.10.1
[(Ph2P-R-PPh2)AuSC(OMe)=NC6H4NO2-4}(2)] (R = CH2, (CH2)2, (CH2)3, (CH2)4, Fc; 4-8, respectively) are linearly coordinated by phosphorus and thiolate-sulfur; weak intramolecular Au...O interactions are featured in all structures. The smaller ethyl substituents in 1 allow for supramolecular association via Au...S and Au...Au interactions that are not found in 2 and 3, which contain larger phosphorus-bound
X射线晶体学分析显示[R3PAu SC(OMe)= NC6H4NO2-4}](R = Et,Cy,Ph;分别为1-3)和[(Ph2P-R-PPh2)AuSC(OMe )= NC 6 H 4 NO 2-4}(2)](R = CH 2,(CH 2)2,(CH 2)3,(CH 2)4,Fc;分别为4-8)由磷和硫醇盐-硫线性配位;在所有结构中均具有弱的分子内Au ... O相互作用。1中较小的乙基取代基允许通过Au.S和Au ... Au相互作用进行超分子缔合,而在2和3中则没有,它们分别具有较大的磷结合Cy和Ph基团。在dppm,dppe,dppp和Fc结构中发现了分子内Au ... Au相互作用,但在dppp类似物中却没有发现这种相互作用,因此发现了抗构象。这些结构已经与固态固态光物理研究的结果相关联。因此,λ> 350的固态和溶液中1-7的光激发分别产生绿色和蓝色发光。每种介质中的光谱