Weaker magnetic interactions of oxalato-copper(II) binuclear compounds: synthesis, spectroscopy, crystal structure and magnetism

被引：37

作者：

Zhang, L

Bu, WM

Yan, SP ^{[1
]}

Jiang, ZH

Liao, DZ

Wang, GL

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

[2] Jilin Univ, Lab Supramol Spect, Changchun 130023, Peoples R China

来源：

POLYHEDRON | 2000年 / 19卷 / 09期

关键词：

crystal structures; binuclear copper compounds; magnetism; oxalato-bridged compounds;

D O I：

10.1016/S0277-5387(00)00359-4

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two binuclear copper(II) compounds, Cu-2(tacn)(2)(mu-ox)(ClO4)(2) (I) and [Cu-2(bdpm)(2)(H2O)(2)(mu-ox)](ClO4)(2) . H2O (II), where tacn = 1,4,7-triazacyclononane, ox = oxalate dianion, bdpm = bis(3,5-dimethylpyrazol-1-yl)methane, have been synthesized and characterized by X-ray diffraction. Each copper atom of compound I has a 4 + 1 + 1 elongated pseudo-octahedral environment; the copper atoms have distorted square pyramidal geometry in compound II. The magnetic susceptibilities (300-4 K) indicated that the binuclear copper(II) cores were antiferromagnetically coupled (2J = - 41 cm(-1) for compound I, 2J = - 102 cm(-1) for compound II). The weakness of the interactions for both compounds is discussed on the basis of the structural features. (C) 2000 Elsevier Science Ltd All rights reserved.

引用

收藏

页码：1105 / 1110

页数：6

相关论文

共 43 条

[31] MAGNESIUM(II) AND ZINC(II) COMPLEXES CONTAINING A 14-MEMBERED HEXAAZA MACROCYCLIC LIGAND [J].

RADECKAPARYZEK, W .

INORGANICA CHIMICA ACTA, 1979, 34 (01) :5-8

[32] METAL-COMPLEXES OF ANXIOLITIC DRUGS - CRYSTAL-STRUCTURE AND ELECTRONIC-PROPERTIES OF DIMERIC OXALATO COMPLEX OF COPPER(II) BROMAZEPAM [J].

REAL, JA ;

BORRAS, J ;

SOLANS, X ;

FONTALTABA, M .

TRANSITION METAL CHEMISTRY, 1987, 12 (03) :254-256

[33] [Cr(bipy)(C2O4)(2)](-): A versatile building block for the design of heteropolymetallic systems. Crystal structures of [BaCr2(bipy)(2)(C2O4)(4)(H2O)](n)center dot nH(2)O, [MnCr2(bipy)(2)(mu-C2O4)(4)](n), and [CoCr2(bipy)(2)(mu-C2O4)(2)(C2O4)(2)(H2O)(2)]center dot H2O [J].

Rochon, FD ;

Melanson, R ;

Andruh, M .

INORGANIC CHEMISTRY, 1996, 35 (21) :6086-6092

[34] Heterodinuclear complexes containing d- and f-block elements: Synthesis, structural characterization, and metal-metal interactions of novel chromium(III)-lanthanide(III) compounds bridged by oxalate [J].

Sanada, T ;

Suzuki, T ;

Yoshida, T ;

Kaizaki, S .

INORGANIC CHEMISTRY, 1998, 37 (18) :4712-4717

[35]

Sheldrick G. M., 1995, SHELXTL VERSION 5

[36]

SHIBATA S, 1954, B CHEM SOC JPN, V27, P485

[37] SYNTHESIS, CHARACTERIZATION, AND MAGNETIC-PROPERTIES OF MU-OXALATO-BRIDGED AND MU-OXAMIDO-BRIDGED COPPER(II) DIMERS - CRYSTAL AND MOLECULAR-STRUCTURES OF [CU2(MEPIRIZOLE)2(C2O4)(H2O)2](PF6)2.MEPIRIZOLE.3H2O AND [CU2(MEPIRIZOLE)2(C2O4)(NO3)2(H2O)]2[CU2(MEPIRIZOLE)2(C2O4)(NO3)2]I [J].

SOTO, L ;

GARCIA, J ;

ESCRIVA, E ;

LEGROS, JP ;

TUCHAGUES, JP ;

DAHAN, F ;

FUERTES, A .

INORGANIC CHEMISTRY, 1989, 28 (17) :3378-3386

[38]

SOTO L, 1991, J CHEM SOC DA, P2619

[39] Synthesis and magnetic properties of a new oxalato-bridged heterotrinuclear complex, [NiCr2(bipy)2(C2O4)4(H2O)2]•H2O.: A rare case of antiferromagnetic coupling between Cr(III) and Ni(II) ions [J].

Stanica, N ;

Stager, CV ;

Cimpoesu, M ;

Andruh, M .

POLYHEDRON, 1998, 17 (10) :1787-1789

[40] CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF [CU(OX)(PY)(2)] (PY=PYRIDINE) - A FERROMAGNETIC OXALATE-BRIDGED ZIGZAG CHAIN COMPLEX [J].

SUAREZVARELA, J ;

DOMINGUEZVERA, JM ;

COLACIO, E ;

AVILAROSON, JC ;

HIDALGO, MA ;

MARTINRAMOS, D .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1995, (13) :2143-2146

← 1 2 3 4 5 →