Topology and spin polarization in sheetlike metal(II) polymers:: [ML2X2] (M = Mn, Fe, Co or Ni, L = pyrimidine or pyrazine and X = NCS or NCO)

被引：42

作者：

Lloret, F

Julve, M

Cano, J

De Munno, G

机构：

[1] Univ Valencia, Fac Quim, Dept Quim Inorgan, E-46100 Valencia, Spain

[2] Univ Calabria, Dipartimento Chim, I-87030 Cosenza, Italy

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1999年 / 334卷

关键词：

Spin Polarization; molecular magnets; weak ferromagnetism; metal complexes; pyrimidine complexes;

D O I：

10.1080/10587259908023352

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The preparation and the structural and magnetic characterization of a series of sheetlike transition metal polymers of formula [ML2X2] [M = Mn(II), Fe(II), Co(II) and Ni(II); L = pyrazine (pyz) and pyrimidine (pym); X = pseudohalide anion] are presented herein. The nature of the intralayer magnetic interaction is discussed as a function of the topology of the bridging ligand. The results show that the spin polarization mechanism can be operative in these systems.

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收藏

页码：569 / 585

页数：17

相关论文

共 19 条

[1] TOWARD MOLECULAR MAGNETS - THE METAL-RADICAL APPROACH [J].

CANESCHI, A ;

GATTESCHI, D ;

SESSOLI, R ;

REY, P .

ACCOUNTS OF CHEMICAL RESEARCH, 1989, 22 (11) :392-398

[2] ORBITAL INTERACTIONS IN METAL DIMER COMPLEXES [J].

HAY, PJ ;

THIBEAULT, JC ;

HOFFMANN, R .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1975, 97 (17) :4884-4899

[3] Dimer species in dimethyl sulfoxide-water (80:20 w/w) solution of N,N'-bis(salicylideneimine)-m-phenylenediamine (H(2)sal-m-phen) and similar Schiff bases with Cu-II, Ni-II, Co-II and Zn-II. Crystal structure of [Co-2(sal-m-phen)(2)]center dot CHCl3 [J].

HernandezMolina, R ;

Mederos, A ;

Gili, P ;

Dominguez, S ;

Lloret, F ;

Cano, J ;

Julve, M ;

RuizPerez, C ;

Solans, X .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1997, (22) :4327-4334

[4]

ISHIDA T, 1997, RECENT RES DEV PURE, V1

[5]

Iwamura H., 1990, ADV PHYS ORG CHEM, V26, P179, DOI DOI 10.1016/S0065-3160(08)60046-5

[6]

Kahn O, 1993, MOL MAGNETISM

[7] PERSISTENT 1,3,5-BENZENETRIYLTRIS(N-TERT-BUTYL NITROXIDE) AND ITS ANALOGS WITH QUARTET GROUND-STATES - INTRAMOLECULAR TRIANGULAR EXCHANGE COUPLING AMONG 3 NITROXIDE RADICAL CENTERS [J].

KANNO, F ;

INOUE, K ;

KOGA, N ;

IWAMURA, H .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (50) :13267-13272

[8] EXCHANGE INTERACTION IN METAL RADICAL SYSTEMS - CHLORO(MESO-TETRAPHENYLPORPHYRINATO)CHROMIUM(III)S AND (HEXAFLUOROACETYLACETONATO)MANGANESE(II) LIGATED WITH 3-(N-OXY-N-TERT- AND 4-(N-OXY-N-TERT-BUTYLAMINO)PYRIDINES [J].

KITANO, M ;

ISHIMARU, Y ;

INOUE, K ;

KOGA, N ;

IWAMURA, H .

INORGANIC CHEMISTRY, 1994, 33 (26) :6012-6019

[9]

KOGA N, 1996, ANGEW CHEM INT EDIT, V108, P815

[10] QUADRATIC-LAYER ANTIFERROMAGNET [J].

LINES, ME .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1970, 31 (01) :101-&