Synthesis and Single Crystal X-Ray Structure Determination of 3,3',5,5'- tetramethyl-4,4'-bipyrazolium tetrachloromanganate(II) monohydrate ([H₂Me₄bpz]₂[MnCl₄]Cl₂·H₂O)

Abstract

The title compound was synthesized mechanochemically by grinding MnCl₂.4H₂O and the protonated organic ligand [H₂Me₄bpz] resulting in the formation of [H₂Me₄bpz][MnCl₄]. Suitable single crystal of this compound was analysed through X-ray diffraction technique to ascertain its composition and internal structure. Single crystal structure determination at 100 K revealed needle-like crystals in an orthorhombic crystal system. The asymmetric unit of the cell consists of an isolated chloride ion, one half of a tetrahedral [MnCl₄]^2- anion, a [H₂Me₄bpz]²⁺ dication and one half of a molecule of water.

Keywords: Crystal Engineering, Hydrogen Bond, X-ray Crystallography