Zhao‐Hui Zhou, H. Wan, K. Tsai
1997
Citations
0
Influential Citations
39
Citations
Journal
Polyhedron
Abstract
Abstract Sodium potassium citrato molybdate K 2 Na 4 [(MoO 2 ) 2 O(cit) 2 ]·5H 2 O has been prepared by the reaction of potassium trihydrogen citrate and sodium molybdate. Analysis of the crystal structure reveals that the anion of the complex contains a bent (MoO 2 )O(MoO 2 ) core with an MoOMo angle 142°. Each molybdenum has a distorted octahedral coordination and citrato ligands are tridentate to the two molybdenum atoms via the deprotonated hydroxy-, α- and β-carboxyl groups. Principal dimensions are: [MoO(t)] av , 1.706(4); [MoO(b)] av , 1.899(3); [MoO(hydroxy)] av , 1.944(3); [Mo Oα-carboxyl)] av , 2.207(3), and [MoO(β-carboxyl)] av , 2.264(3) A. The IR, 1 H and 13 C NMR spectra are in agreement with this structure.