Synthesis and Crystal Structure of the Mixed Metal Coordination Framework [Co2(H2O)2(pyrazine)V4O12](H2O)2

The coordination framework [Co 2 (H 2 O) 2 (pyrazine)V 4 O 12 ](H 2 O) 2 ( 1 ) was synthesized via hydrothermal synthesis using cobalt nitrate, vanadium oxide, and pyrazine. Compound 1 crystallizes in the monoclinic space group P 2 1 / n ( a = 7.172(3) Å, b = 9.907(4) Å, c = 12.211(4) Å, and β = 105.301(7)°) and contains a rare V 4 O 12 trigonal bipyramidal double chain. Graphical Abstract [Co 2 (H 2 O) 2 (pyrazine)V 4 O 12 ](H 2 O) 2 (1) was synthesized hydrothermally from a vanadium oxide precursor, forming chains of edge-sharing distorted vanadium trigonal bipyriamids.