Departamento de Química Inorgánica, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), P.O. Box 644, 48080 Bilbao, Spain.
Inorg Chem. 2011 Oct 3;50(19):9587-93. doi: 10.1021/ic201331d. Epub 2011 Aug 25.
The first heterometallic copper-cerium polyoxometalate, {Ce(IV)(OAc)}Cu(II)(3)(H(2)O)(B-α-GeW(9)O(34))(2) (1), is composed of an unprecedented copper(II)-trisubstituted Weakley-type tungstogermanate subunit stabilized by coordination of a {Ce(OAc)}(3+) group at the vacant position. The title species contains a central {Ce(IV)Cu(II)(3)O(18)} rhomblike cluster that belongs to a new {(4f(ext))(3d(ext))(3d(int))(2)} type and magnetically behaves as a triangular Cu(3) system with overall antiferromagnetic exchange affected by the structural distortions the vicinity of diamagnetic Ce(IV) induces.
首例杂核铜-铈多金属氧酸盐{Ce(IV)(OAc)}Cu(II)(3)(H(2)O)(B-α-GeW(9)O(34))(2) (1)，由一个前所未有的铜(II)三取代弱配位型钨锗酸盐亚单元组成，其通过 {Ce(OAc)}(3+) 基团在空位处的配位得到稳定。该标题物种含有一个中央{Ce(IV)Cu(II)(3)O(18)}菱形簇，属于一种新的{(4f(ext))(3d(ext))(3d(int))(2)}类型，且表现出三角形 Cu(3)体系的磁行为，其整体反铁磁交换受结构畸变的影响，而这种结构畸变是由近邻的抗磁性 Ce(IV)所诱导的。
