An unexpected dinuclear Cu(II) complex, [Cu2(L2)2] (H2L2 = 3-methoxysalicylaldehyde-O-(2-hydroxyethyl)oxime) has been synthesized through the complexation of Cu(OAc)2·H2O with an asymmetrical Salamo-type compound 6-ethyloxy-6-methoxy-2,2-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol (H2L1). The catalysis of Cu(II) ions results in the unexpected cleavage of one of the N-O bonds in the ligand H2L1, giving a novel dialkoxo-bridged dinuclear Cu(II) complex possessing a Cu-O-Cu-O four-membered ring core instead of the usually desired Salamo-type Cu-N2O2 mononuclear complex. In the crystal structure, two intermolecular hydrogen bonds, C2-H2B···O3 and C2-H2B···O4 linked the neighboring molecules into an infinite chain parallel to the a axis.
通过Cu(OAc)2·
H2O与不对称Salamo型化合物6-乙氧基-6-甲氧基-2,2-[乙二基二氧双(腈基甲基)]二
苯酚(H2L1)的络合,意外地合成了二核Cu(II)络合物[Cu2(
L2)2](H2
L2=3-甲氧基
水杨醛-O-(2-羟基乙基)
肟)。Cu(II)离子的催化作用导致
配体H2L1中的一个N-O键意外断裂,形成了一种新型二烷氧基桥联二核Cu(II)络合物,其中心为Cu-O-Cu-O四元环,而不是通常所需的Salamo型Cu-
N2O2单核络合物。在晶体结构中,两个分子间氢键(C2-H2B···O3和C2-H2B···O4)将相邻分子连接成平行于a轴的无限链。