Room temperature synthesis and crystal structure of mer-[MoBr 3Py3], the vibrational spectra of mer-[MoBr 3Py3], mer-[MoI3Py3] and trans,trans-[MoBr2Py4][MoBr4Py2]

Abstract

The reaction of MoBr3 and pyridine at room temperature provided single crystals of mer-[MoX3Py3]. mer-[MoBr 3Py3] crystallizes in P21/n monoclinic space group with cell dimensions a = 9.2297(5) Å, b = 12.911(8) Å, c = 15.7022(9) Å and β = 90.479(3)°. There are four formula units in a unit cell. Mo-N distances are in the range 2.196(8)-2.214(8) Å and Mo-Br distances are 2.573(1) Å and 2.574(1) Å. Fundamental vibrational frequencies of pyridine molecules are strongly affected upon coordination in all three coordination compounds: mer-[MoBr3Py3], mer-[MoI3Py3] and trans,trans-[MoBr2Py 4][MoBr4Py2]. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.