Synthesis, structural characterization and solvatochromic studies of a series of Schiff base-containing triosmium alkylidyne carbonyl clusters
作者:Wai-Yeung Wong、Wing-Tak Wong
DOI:10.1016/s0022-328x(99)00091-1
日期:1999.7
n=1, 6, 7 or 9) have been prepared by reaction of [Os3(μ-H)3(CO)9(μ3-CCl)] with one equivalent of 1,8-diazabicyclo[5.4.0]undec-7-ene in the presence of a ten-fold excess of the Schiff base ligands NC5H4CHNC6H4R at room temperature. Analogous triosmium carbonyl clusters bearing 4′-methoxy-4-stilbazole or 4-(4-nitrobenzyl)pyridine moiety at the apical carbon centre have also been synthesized using a similar
一系列新的席夫含碱triosmium次烷基羰基簇[O的3(μ-H)2(CO)9(μ 3 -数控5 ħ 4 CHNC 6 ħ 4 R)](R = H,NME 2, SMe,CMe 3,NH 2,Br,Cl,OC n H 2 n +1,n = 1、6、7或9)是通过[Os 3(μ-H)3(CO)9( μ 3-CCl)],在室温下存在十倍过量的席夫碱配体NC 5 H 4 CH = NC 6 H 4 R的情况下,用一当量的1,8-二氮杂双环[5.4.0]十一碳-7-烯温度。还使用类似的去质子化方法合成了在顶部碳中心带有4'-甲氧基-4-苯乙烯基唑或4-(4-硝基苄基)吡啶部分的类似的羰基tri鎓羰基簇。所选配合物的分子结构已通过X射线晶体学确定。紫外可见光谱表明,这类化合物在有机介质中显示出显着的负溶剂变色作用。