Protonated malonate:: the influence of the hydrogen bonds on the magnetic behaviour

被引：37
作者：
Delgado, FS
Sanchiz, J
Ruiz-Pérez, C
Lloret, F
Julve, M
机构：
[1] Univ La Laguna, Dept Fis Fundamental 2, Lab Rayos X & Mat Mol, Tenerife, Spain
[2] Univ La Laguna, Dept Quim Inorgan, Lab Rayos X & Mat Mol, Tenerife 38204, Spain
[3] Univ Valencia, Fac Quim, Inst Ciencia Mol, Dept Quim Inorgan, E-46100 Valencia, Spain
来源：
CRYSTENGCOMM | 2004年 / 6卷
关键词：
D O I：
10.1039/b406529h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
One hydrogen malonato-bridged complex of formula [Cu(Hmal)(2)] (1) and two polymorphous malonato-bridged complexes of formula [Cu(H2O)(H(2)mal)(mal)] (2 and 3), in which the three species of the malonate ( H2mal, Hmal 2, and mal 22) are present, were synthesised and characterized by X-ray diffraction [H(2)mal = malonic acid]. Their structures consist of corrugated malonate layers of [Cu( Hmal)(2)] (1) and [Cu(H2O)(H(2)mal)(mal)] (2 and 3) units bridged by carboxylate-malonate groups. The layers are linked through hydrogen bonds leading to a three-dimensional network. Variable-temperature (1.9-290 K) magnetic susceptibility measurements indicate the occurrence of weak ferromagnetic interactions between the copper(II) ions through the carboxylate malonate bridge. The effectiveness of magnetic exchange coupling is related to the degree of protonation of the malonate group.
引用
收藏
页码：443 / 450
页数：8
相关论文
共 39 条
[1]   HIGH-TEMPERATURE SERIES EXPANSIONS FOR SPIN-1-2 HEISENBERG MODEL BY METHOD OF IRREDUCIBLE REPRESENTATIONS OF SYMMETRIC GROUP [J].
BAKER, GA ;
RUSHBROOKE, GS ;
GILBERT, HE .
PHYSICAL REVIEW, 1964, 135 (5A) :1272-+
[2]   SYNTHESIS AND STRUCTURAL STUDIES OF TETRAAQUACOPPER(II) DIAQUABIS(MALONATO)CUPRATE(II) [J].
CHATTOPADHYAY, D ;
CHATTOPADHYAY, SK ;
LOWE, PR ;
SCHWALBE, CH ;
MAZUMDER, SK ;
RANA, A ;
GHOSH, S .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1993, (06) :913-916
[3]  
Colacio E, 1999, EUR J INORG CHEM, P441
[4]   GENERAL DEFINITION OF RING PUCKERING COORDINATES [J].
CREMER, D ;
POPLE, JA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1975, 97 (06) :1354-1358
[5]  
*CRYST SOFTW, 2001, CRYST MAK 4 2 1
[6]  
de Muro IG, 1998, INORG CHEM, V37, P3243
[7]   Design of high-dimensional copper(II) malonate complexes with exo-polydentate N-donor ligands [J].
Delgado, FS ;
Sanchiz, J ;
Ruiz-Pérez, C ;
Lloret, F ;
Julve, M .
INORGANIC CHEMISTRY, 2003, 42 (19) :5938-5948
[8]   Exchange coupling of transition-metal ions through hydrogen bonding:: A theoretical investigation [J].
Desplanches, C ;
Ruiz, E ;
Rodríguez-Fortea, A ;
Alvarez, S .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (18) :5197-5205
[9]   Early-late transition metal ferromagnetic coupling mediated by hydrogen bonding [J].
Desplanches, U ;
Ruiz, E ;
Alvarez, S .
CHEMICAL COMMUNICATIONS, 2002, (22) :2614-2615
[10]  
Earnshaw A., 1968, INTRO MAGNETOCHEMIST
1234