molecules of dimethyl ether of acetylenedicarboxylic acid. This dianion is coordinated to palladium(II) via 1 and 4 carbon atoms with the formation of the palladacyclopentadienyl moiety. The crystal structure is determined by the single crystal X-ray diffraction analysis. The 1·(C2H5)2O compound crystallizes in the orthorhombic crystal system (Pbca) with unit cell parameters a = 16.9069(3) Å, b = 23.5618(6) Å
摘要 通过[ Pd 2 ( _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ dba) 3] (dba =
二亚苄基丙酮) 与
乙炔二
甲酸的二
甲醚和 1,2-双[(2,6-二异丙基苯基)亚
氨基]
苊 (dpp-bian) 的摩尔比为 1:4:2。在氧化加成反应期间,1,2,3,4-四(甲氧基羰基)丁-1,3-二烯基双阴离子由两个
乙炔二
甲酸的二
甲醚分子形成。该双阴离子通过 1 和 4 个碳原子与
钯 (II) 配位,形成
钯环戊二烯基部分。晶体结构由单晶X射线衍射分析确定。1 · (C 2 H 5 ) 2 O 化合物在正交晶系 ( Pbca ) 中结晶,晶胞参数a = 16.9069(3) Å,b = 23.5618(6) 埃,c = 23.8902(7) 埃,V = 9516.83(40) 埃3。每个
钯原子都有一个几乎正方形的平面环境,由两个 dpp-bian 氮原子和两个 (C