78571-53-6Relevant academic research and scientific papers
Dodecamolybdotetrakis(organoarsonates) and the structure of a neutral zwitterionic heteropoly complex
Barkigia,Rajkovi?-Blazer,Pope,Quicksall
, p. 3318 - 3323 (1981)
Several salts of the herteropoly molybdoarsonate anions [(RAs)4MO12O46]4- (R = CH3, C6H5, p-C6H4NH3+, C2H4OH) have been prepared and characterized by spectroscopic techniques. The derivative with R = p-C6H4NH3+ is stable to at least 250°C and shows anomalous solubility behavior in mixed solvents. The structure of [(p-H3NC6H4As)4Mo12O 46]·6H2O·10CH3CN (Fdd2, a = 38.916 (6) A?, b = 38.972 (7) A?, c = 11.901 (2) A?, Z = 8) has been determined by single-crystal X-ray diffraction and refined to final consistency indices R and Rw of 0.069 and 0.062, respectively. The metal oxide portion of the structure is similar to that in (NH4)4H4As4Mo12O 46·H2O and consists of four groups of three MoO6 octahedra, which share edges within each group and corners with neighboring groups. The octahedra are bridged by four tetrahedral p-H3+NC6H4As groups. The complexes are held together by H2O molecules, which are presumably hydrogen bonded to the nitrogens of the organic groups, and by CH3CN molecules, which lie in diagonal rows between the complexes.
