A dinuclear manganese(II) complex {[Na2(H2O)4Mn2(μ-pmtz)4(NCS)2]•χH2O)n with 5-(pyrimidyl)tetrazolato bridges involved in 1D ladder-like chains: Synthesis, X-ray structure, magnetic properties and DFT calculations

被引:4
|
作者
Herchel, Radovan [1 ]
Novosad, David [1 ]
Travnicek, Zdenek [1 ]
机构
[1] Palacky Univ, Fac Sci, Dept Inorgan Chem, Reg Ctr Adv Technol & Mat, CZ-77146 Olomouc, Czech Republic
关键词
Manganese(II) complex; 5-(Pyrimidyl)tetrazolate; Antiferromagnetic exchange; Crystal structure; DFT; TRANSITION-METAL DIMERS; LUMINESCENCE PROPERTIES; COORDINATION POLYMERS; EXCHANGE INTERACTIONS; CRYSTAL-STRUCTURES; DENSITY; LIGAND;
D O I
10.1016/j.poly.2012.04.041
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A dinuclear manganese(II) unit of the composition {[Na-2(H2O)(4)Mn-2(mu-pmtz)(4)(NCS)(2)]center dot chi H2O)(n) (1 center dot chi H2O) (x = 3 or 0.5), where pmtz = 5-(pyrimidyl)tetrazolate(1-), involved in 1D ladder-like chains mediated through pmtz bridges, was prepared and characterized by elemental analysis, FT-IR spectroscopy, simultaneous thermogravimetric (TG) and differential thermal (DTA) analyses, single crystal X-ray analysis and magnetic measurements, accompanied by DFT calculations. The magnetic data, treated with the spin Hamiltonian formalism, revealed a weak antiferromagnetic exchange mediated via the kappa N-2(1),N-7:kappa N-2 chelating/bridging mode of pmtz. This finding was also supported by the DFT calculations performed on the experimentally determined geometry of the dinuclear manganese(II) unit at the B3LYP/TZVP and B2PLYP/TZVP levels of theory. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:50 / 56
页数:7
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