Synthesis, structural characterisation and photophysics of anionic cyclometalated bis(alkynyl)(benzo[h]quinolinate)platinate(ii) species
作者:Susana Fernández、Juan Forniés、Belén Gil、Julio Gómez、Elena Lalinde
DOI:10.1039/b210907g
日期:2003.2.24
The alkynylation of [Pt(bzq)(μ-Cl)]2 (bzqH = benzo[h]quinoline) with excess of LiCCR in diethyl ether leads to novel (7,8-benzoquinolinate)bis(alkynyl)platinate(II) monoanionic species [Pt(bzq)(CCR)2]− (R = tBu 1, SiMe32, Ph 3, Tol 4, C6H4CF3-4 5, C5H4N-2 6, C6H4–CCPh 7) which have been isolated as tetrabutylammoniun salts. The molecular X-ray structures of 3 and 6 reveal the presence of discrete anions
[Pt(bzq)(μ-Cl)] 2 (bzqH =苯并[ h ]喹啉)中过量的LiC CR乙醚导致产生新的(7,8-苯并喹啉酸酯)双(炔基)铂(II)单阴离子物质[Pt(bzq)(C CR)2 ] - (R = t Bu 1,SiMe 3 2,Ph 3,Tol 4,C 6 H 4 CF 3 -4 5,C 5 H 4 N-2 6,C 6 H 4 -C CPh 7),它们已经以四丁基铵盐的形式分离出来。3和6的分子X射线结构揭示存在离散的阴离子,其键长和键角与相关的环金属化的Pt化合物相似,并且没有π–π或Pt–Pt堆积相互作用的证据。R取代基对配合物光物理的影响已经通过紫外线可见 吸收,发射 光谱学和循环伏安法。配合物1-6在固态(无结构发射)和冷冻溶液(分辨良好的振动子结构)中均显示出类似的强发光,而室温下溶液中的发射发生红移(相对于玻璃)且微弱。对于这些络合物,基于重现阴离子3 [Pt(bzq)(C