Electrochemical studies of molybdenum hexafluoride and related compounds in anhydrous hydrogen fluoride

Lewis Acid Behavior of MoF5 and MoOF4: Syntheses and Characterization of MoF5(NCCH3), MoF5(NC5H5)n, and MoOF4(NC5H5)n (n = 1, 2)

“…26 The inability to form the analogous Mo adducts is not particularly surprising because MoOF 4 is a significantly stronger oxidant than WOF 4 . 29 Herein, we report the preparation and characterization of adducts of MoF 5 with the Lewis bases CH 3 CN and C 5 H 5 N, i.e., MoF 5 (NCCH 3 ) and MoF 5 (NC 5 H 5 ) n (n = 1, 2), which represent the first conclusively characterized neutral adducts of MoF 5 . For comparison, the study was extended to the related d 0 MoOF 4 (NC 5 H 5 ) n (n = 1, 2) adducts, which exhibit similarities as well as important structural differences with respect to the d 1 MoF 5 systems.…”

“…In addition, the only neutral, discrete MoOF 4 complexes for which crystallographic data have been obtained are MoOF 4 (OSO) and MoOF 4 {OP­(C 6 H 5 ) 3 }. , Whereas WOF 4 forms 1:1 complexes with various soft P-donor ligands including PMe 3 , Me 2 PCH 2 CH 2 PMe 2 , or o -C 6 H 4 (PMe 2 ) 2 , the reaction of MoOF 4 (NCCH 3 ) with such P-donor bases results in a reduction of the Mo VI center . The inability to form the analogous Mo adducts is not particularly surprising because MoOF 4 is a significantly stronger oxidant than WOF 4 …”