作者:Christopher P. Morley、Christopher A. Webster、Peter Douglas、Karen Rofe、Massimo Di Vaira
DOI:10.1039/b916605j
日期:——
The reaction between [Pt(PPh3)4] and cycloocteno-1,2,3-selenadiazole or bis-cycloocteno-1,4-diselenin in toluene under reflux yielded the poorly soluble mononuclear platinum diselenolene [Pt(Se2C8H12)(PPh3)2], 1c. Treatment of [Pt(C2H4)(PR3)2] with a bis-cycloalkeno-1,4-diselenin in a mixture of 1,4-dioxane, THF and toluene under reflux led in good yield to the platinum diselenolenes [Pt(Se2Cn+4H2n+4)(PR3)2] (R = Et (2), Bu (3); n = 3 (b), 4 (c)). The analogous complexes [Pt(Se2C8H12)(L)] (L = dppm: 4c; L = dppe: 5c; L = dppp: 6c) were prepared from 1cvia ligand exchange with chelating phosphines. All new compounds have been characterised by multinuclear NMR, IR and UV-visible spectroscopy and mass spectrometry, and their luminescence properties have been examined. The molecular structures of [Pt(Se2C7H10)(PEt3)2] (2b), [Pt(Se2C8H12)(PEt3)2] (2c) and [Pt(Se2C8H12)(dppm)] (4c) have been determined by X-ray crystallography.
[Pt(PPh3)4]与环辛烯基-1,2,3-硒二唑或双环辛烯基-1,4-二硒在甲苯中回流反应生成难溶性单核二硒烯铂[Pt(Se2C8H12)(PPh3)2 ],1c。在 1,4-二恶烷、THF 和甲苯的混合物中,在回流下用双环烯-1,4-二硒烯处理 [Pt(C2H4)(PR3)2],以良好的收率得到二硒烯铂 [Pt(Se2Cn) +4H2n+4)(PR3)2] (R = Et (2), Bu (3);n = 3 (b), 4 (c))。类似的配合物 [Pt(Se2C8H12)(L)] (L = dppm: 4c; L = dppe: 5c; L = dppp: 6c) 由 1c 通过与螯合膦的配体交换制备。所有新化合物均已通过多核核磁共振、红外、紫外-可见光谱和质谱进行了表征,并检查了它们的发光特性。 [Pt(Se2C7H10)(PEt3)2] (2b)、[Pt(Se2C8H12)(PEt3)2] (2c) 和 [Pt(Se2C8H12)(dppm)] (4c) 的分子结构已通过 X- 确定射线晶体学。