Luminescent Mononuclear and Binuclear Cyclometalated Palladium(II) Complexes of 6-Phenyl-2,2‘-bipyridines: Spectroscopic and Structural Comparisons with Platinum(II) Analogues<sup>1</sup><sup>,</sup><sup>2</sup>
作者:Siu-Wai Lai、Tsz-Chun Cheung、Michael C. W. Chan、Kung-Kai Cheung、Shie-Ming Peng、Chi-Ming Che
DOI:10.1021/ic991089g
日期:2000.1.1
X = Cl, la; Br, 1b; I, 1c), [Pd(L1)PPh3]+ (1d), [Pd(L2-5)Cl] [2a-5a, HL2-5 = 4-(aryl)-6-phenyl-2,2'-bipyridine; aryl = phenyl (2), 4-chlorophenyl (3), 4-tolyl (4), 4-methoxyphenyl (5)] and the binuclear derivatives [Pd2(L1-5)2(mu-dppm)]2+ (1e-5e, dppm = bis(diphenylphosphino)methane) and [Pd2(L1)2(mu-dppCs)]2+, (1f, dppC5 = 1,5-bis(diphenylphosphino)pentane) were prepared. The crystal structures of
单核环金属化Pd(II)配合物[Pd(L1)X](HL1 = 6-苯基-2,2'-联吡啶; X = Cl,la; Br,1b; I,1c),[Pd(L1)PPh3 ] +(1d),[Pd(L2-5)Cl] [2a-5a,HL2-5 = 4-(芳基)-6-苯基-2,2'-联吡啶;芳基=苯基(2),4-氯苯基(3),4-甲苯基(4),4-甲氧基苯基(5)]和双核衍生物[Pd2(L1-5)2(mu-dppm)] 2+(1e制备-5e,dppm =双(二苯基膦基)甲烷)和[Pd2(L1)2(mu-dppCs)] 2 +,(1f,dppC5 = 1,5-双(二苯基膦基)戊烷)。1d(ClO4),1e(ClO4)2 x DMF和2e(ClO4)2的晶体结构已通过X射线晶体学测定。Le和2e中的Pd-Pd距离的大小(分别为3.230(1)和3.320(2)A)表明金属与金属之间的相互作用最小,尽管芳香族配体的pi堆积(平面间距分别为3