Magneto-structural correlations of a three-dimensional Mn based metal-organic framework

被引：15

作者：

Nadeem, Muhammad Arif ^{[1
]}

Craig, Donald J. ^{[2
]}

Bircher, Roland ^{[3
]}

Stride, John A. ^{[1
,3
]}

机构：

[1] Univ New S Wales, Sch Chem, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Analyt Ctr, Sydney, NSW 2052, Australia

[3] Australian Nucl Sci & Technol Org, Bragg Inst, Menai, NSW 2234, Australia

来源：

DALTON TRANSACTIONS | 2010年 / 39卷 / 18期

关键词：

CRYSTAL-STRUCTURE; HYDROTHERMAL SYNTHESIS; MAGNETIC-PROPERTIES; TRIPODAL LIGANDS; COMPLEXES; BEHAVIOR; NETWORK; NETS;

D O I：

10.1039/b922750d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A 3D metal-organic framework, [Na{Mn-3(Hbtc)(2)(btc)}center dot 5H(2)O](n) (1) (H(3)btc = 1,3,5-benzene tricarboxylic acid), was synthesized under hydrothermal conditions. The structure of 1 was established by single crystal X-ray diffraction analysis; 1 crystallizes in the monoclinic space group P2/c, a = 9.753(3) angstrom, b = 12.751(2) angstrom, c = 14.174(4) angstrom, beta = 109.41(1)degrees. The complex 1 is isostructural to previously reported MIL-45 and consists of one dimensional wave like chains of carboxylate bridged hexa-coordinated Mn(II) ions. Variable temperature magnetic susceptibility measurements revealed dominant antiferromagnetic exchange interactions and the intra-chain exchange constants J(1) = -2.4 cm(-1) and J(2) = -0.6 cm(-1) compare well with literature values for similar materials. Inter-chain interactions are expected to be very small in this compound and there is no indication of magnetic ordering phenomena in the temperature range from 300-2 K.

引用

页码：4358 / 4362

页数：5

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