distances in tetramer are 2.930(1) and 9.313(3) Angstrom. Compound 2 contains cationic [Cu-4] rectangles, with the short edges constructed from the preexisting [L-OH and Aphenoxo groups [3.062(1) Angstrom], and the long ones constructed from the isonicotinato linkers [9.352(1) Angstrom]. In both compounds the copper(II) ions are pentacoordinated with a square-pyramidal stereochemistry. (C) 2003 Elsevier
描述了两种新的四核配合物的合成和晶体结构:[L(g-OH)Cu-2}(mu-fum)Cu-2(mu-OH)L}] 1(
ClO4)(2)( 1)和[L(mu-OH)Cu-2}(mu-IN)(2)Cu-2(mu-OH)L}]( )(2).2C(2)H(5) OH.0.5H(2)O(2)。这两种络合物是通过涉及双核
铜(II)络合物[L(mu-OH)Cu-2]( )(2)的自组装过程获得的(L代表隔室末端
配体,2, 6-双[N-2-
吡啶基乙基)亚
氨基酰基]-
酚基)和齿外
配体(
富马酸根阴离子fum(2-)和
异烟酸根阴离子IN-)。1的晶体结构由中心对称的四核阳离子物种组成,这是通过将两个双核单元与一个二羧基连接子连接而产生的。每个羧基基团在双核部分内的
铜(II)离子之间形成第三桥(syn -syn桥联模式)。最近的(CuCu)-Cu -... 四聚体的距离为2.930(1)和9.