Crystal structure of (μ-hydrogen di-sulfato)-μ-oxido-bis-[(4,4'-di- tert -butyl-2,2'-bi-pyridine)-oxidovanadium(IV/V)] aceto-nitrile monosolvate.

The dinuclear oxidovanadium(IV/V) complex, [V 2 (HS 2 O 8 )O 3 (C 18 H 24 N 2 ) 2 ]·CH 3 CN or [V 2 O 2 (μ-O)(μ-H(SO 4 ) 2 )(4,4'- t Bubpy) 2 ]·CH 3 CN (4,4'- t Bubpy = 4,4'-di- tert -butyl-2,2'-bi-pyridine), has crystallographic C 2 symmetry and exhibits a distorted octa-hedral geometry around the vanadium center, where the two 4,4'- t Bubpy ligands are nearly orthogonal to each other. The two vanadium ions are linked by an oxo anion and a unique protonated sulfate anion [H(SO 4 ) 2 3- ]. In the crystal, inter-molecular C-H⋯π and π-π inter-actions between the 4,4'- t Bubpy ligands are present, leading to a three-dimensional network.