Coordination polymers of manganese(II) and cobalt(II) of a flexible tetradentate pyridine amide ligand: 1D zigzag network and non-covalent interactions

Jacob, Wilson ; Mukherjee, Rabindra Nath (2008) Coordination polymers of manganese(II) and cobalt(II) of a flexible tetradentate pyridine amide ligand: 1D zigzag network and non-covalent interactions Inorganica Chimica Acta, 361 (5). pp. 1231-1238. ISSN 0020-1693

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00201...

Related URL: http://dx.doi.org/10.1016/j.ica.2007.08.006

Abstract

Synthesis and crystal structure of two coordination polymers of composition [MnII(H2bpbn)1.5][ClO4]2·2MeOH·2H2O (1) and [CoII(H2bpbn)(H2O)2]Cl2·H2O (2) [H2bpbn = N,N'-bis(2-pyridinecarboxamido)-1,4-butane], formed from the reaction between [Mn(H2O)6][ClO4]2/CoCl2·4H2O with H2bpbn in MeCN, are described. In 1 each MnII ion is surrounded by three pyridine amide units, providing three pyridine nitrogen and three amide oxygen donors. Each MnII center in 1 has distorted MnN3O3 coordination. In 2 each CoII ion is coordinated by two pyridine amide moieties in the equatorial plane and two water molecules provide coordination in the axial positions. Thus, the metal center in 2 has trans-octahedral geometry. In both 1 and 2, the existence of 1D zigzag network structure has been revealed. Owing to π-π stacking of pyridine rings from adjacent layers 1 forms 2D network; 2 forms 2D and 3D network assemblies via N-H···Cl and O-H···Cl secondary interactions. Both the metal centers are high-spin.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Mn(II) (S = 5/2) and Co(II) (S = 3/2) Complexes; Tetradentate Pyridine Amide Ligand; Crystal Structure; Pyridine N and Amide O Coordination; 1 D Zigzag Coordination Polymer; Non-covalent (π-π Stacking; N-H···Cl, and O-H···Cl) Interactions
ID Code:26017
Deposited On:04 Dec 2010 10:38
Last Modified:02 Mar 2011 10:35

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