Superexchange interactions through quasi-linear end-to-end azido bridges: Structural and magnetic characterisation of a new two-dimensional manganese-azido system [Mn(DENA)2(N3)2](n) (DENA = diethylnicotinamide)

被引：0

作者：

Goher, Mohamed A. S. ^{[1
]}

Abu-Youssef, Morsy A. M. ^{[1
]}

Mautner, Franz A. ^{[2
]}

Vicente, Ramon ^{[3
]}

Escuer, Albert ^{[3
]}

机构：

[1] Chemistry Department, Faculty of Science, Alexandria University, P.O.Box. 426, Ibrahimia, Alexandria 21321, Egypt

[2] Inst. fur Phys. und Theor. Chem., Technische Universität Graz, A-8010 Graz, Austria

[3] Dept. de Quim. Inorgànica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain

来源：

| 1819年 / Wiley-VCH Verlag卷

基金：

美国国家科学基金会;

关键词：

Manganese compounds - Sodium Azide;

D O I：

10.1002/1099-0682(200008)2000:83.0.co;2-k

中图分类号：

学科分类号：

摘要：

Reaction of sodium azide with manganese(II) and diethylnicotinamide (DENA) leads to the two-dimensional system trans-[Mn(DENA)2(N3)2](n). The compound crystallises in the P2/c (monoclinic) group. Structural determination shows layers of manganese atoms bridged by means of single μ1,3-azide bridges. The polymeric structure is achieved by means of two different μ1,3-azide bridges, one of them with Mn-N-N bond angles of 148.4(2)°, whereas the second nonequivalent azido bridge has the unusual feature of quasi-linear coordination with Mn-N-N bond angles of 171.7(2)°. Molecular orbital calculations and susceptibility data show antiferro- magnetic interaction and similar constant coupling values for the two superexchange pathways, in spite of the structural differences. Susceptibility, magnetisation, and EPR properties are compared with related azido systems.

引用

共 23 条

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Goher, MAS
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EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2000, (08) : 1819 - 1823
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POLYHEDRON, 2000, 19 (13) : 1575 - 1578
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Goher, MAS
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JOURNAL OF COORDINATION CHEMISTRY, 1998, 44 (1-2) : 119 - 131
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Liu, Bao-Lin
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Nfor, Emmanuel N.
Song, You
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INORGANIC CHEMISTRY COMMUNICATIONS, 2009, 12 (01) : 8 - 10
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Escuer, A.
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Inorganic Chemistry, 35 (22):
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Inorg Chem, 4 (677):
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INORGANIC CHEMISTRY, 1994, 33 (12) : 2697 - 2700
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Escuer, A
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INORGANIC CHEMISTRY, 1996, 35 (22) : 6386 - 6391

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