# Synthesis and crystal structure of $M(hmt)_2(H_2O)_6(NO_3)_2.4H_2O$ complexes, where $M=Mn^{2+},Co^{2+}$

Chopra, Deepak and Dagur, Pritesh and Prakash, AS and Row, Guru TN and Hegde, MS (2005) Synthesis and crystal structure of $M(hmt)_2(H_2O)_6(NO_3)_2.4H_2O$ complexes, where $M=Mn^{2+},Co^{2+}$. In: Journal of Crystal Growth, 275 (1-2). e2049-e2053.

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## Abstract

A series of M-hmt complexes, where $M=Mn^{2+},Co^{2+}$ were synthesized and studied by single crystal X-ray diffraction. The cobalt complex crystallizes in the triclinic space group P-1 with a = 9.098(2)\AA, b = 9.390(2) \AA, c = 9.649(2)\AA, $\alpha = 88.3(1)^o,\beta= 75.6(2)^o, \gamma=61.64(3)^o$ with Z = 1. The Mn complex crystallized in the monoclinic space group $P2_1/n$ with a=9.511(3)\AA b=16.232(4)\AA c =19.426(5)\AA $\beta=90.6(4)^o$ with Z = 4: The structure consists of hexa-coordinated metal cations with water as the ligand having slightly distorted octahedral geometry. The organic ligand, hexamethylenetetramine is not directly coordinated to the metal ion but its presence stabilizes the molecular assembly because of the presence of a rich variety of intermolecular interactions.

Item Type: Journal Article Copyright of this article belongs to Elsevier. A1. Crystal structure;A1. Single-crystal growth;A1. X-ray diffraction;B1. Inorganic compounds;B1. Metals;B1. Organic compounds Division of Chemical Sciences > Materials Research CentreDivision of Chemical Sciences > Solid State & Structural Chemistry Unit 23 Mar 2007 19 Sep 2010 04:35 http://eprints.iisc.ernet.in/id/eprint/9745