Synthesis, structure and magnetic properties of a 1D coordination polymer of Cu(II) containing phenoxido and dicyanamido bridging groups

被引：36

作者：

Bikas, Rahman ^{[1
,2
]}

Hosseini-Monfared, Hassan ^{[1
]}

Korabik, Maria ^{[2
]}

Krawczyk, Marta S. ^{[2
]}

Lis, Tadeusz ^{[2
]}

机构：

[1] Univ Zanjan, Fac Sci, Dept Chem, Zanjan 4537138791, Iran

[2] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland

来源：

POLYHEDRON | 2014年 / 81卷

关键词：

Hydrazone Schiff bases; Cu(II) coordination polymer; Magnetic properties; Crystal structure; Phenoxido and dicyanamido bridges; METAL-ORGANIC FRAMEWORKS; HYDRAZONE SCHIFF-BASE; ONE-POT SYNTHESIS; CRYSTAL-STRUCTURE; MAGNETOSTRUCTURAL CORRELATIONS; COPPER(II) COMPLEXES; GALACTOSE-OXIDASE; THEORETICAL CALCULATIONS; BINUCLEAR COMPLEXES; CATALYTIC-ACTIVITY;

D O I：

10.1016/j.poly.2014.06.024

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new Cu-II 1D coordination polymer, {[Cu-2(L)(mu(1,5)-dca)](2)center dot 2(CH3OH)}(n) (1), containing the carbohydrazide based ligand (H3L = bis-[(E)-N'-(2-hydroxybenzylidene)]carbohydrazide) and the dicyanamide (dca) bridging group has been synthesized and characterized by magnetic measurements, single crystal X-ray diffraction and other spectroscopic methods. X-ray analysis reveals that the ligand coordinates to the Cu-II ion as a hexadentate trinegative N3O3-donor ligand. Tetranuclear copper(II) units with double phenoxido bridges are formed, connected and extended by two mu(1,5)-dca anions, forming a 1D polymeric structure. The magnetic measurements showed global antiferromagnetic interactions with two coupling constants between "outer" (J = -87 +/- 2 cm(-1)) and "inner" (J' = -129 +/- 2 cm(-1)) copper pairs in tetranuclear units. The dicyanamide, adopting the end-to-end bridging mode (metal-metal separation of ca. 8.062(5) angstrom), has presented poor efficiency in mediating magnetic interactions. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：282 / 289

页数：8

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