Synthesis and Characterization of [MF₅(terpy)]⁺ (M = Mo, W) Salts: Autoionization of MF₆ Induced by a Tridentate Ligand.

ABSTRACT: The reactions of the hexafluorides MoF₆ and WF₆ with the tridentate ligand terpyridine (terpy) result in autoionization forming [MF₅(terpy)][MF₇] (M = Mo, W) salts. Displacement of [WF₇]^- utilizing SbF₅, yielded [WF₅(terpy)][SbF₆]. The octacoordinate [MF₅(terpy)]⁺ cations adopt a bicapped trigonal prismatic geometry based on X-ray crystallography and density functional theory (DFT) calculations, which is different than the geometry of previously reported fluorido W^VI cations. The [MoF₅(terpy)]⁺ cation represents the first fluorido Mo^VI cation.

SUBMITTER: van Hoeve MD 

PROVIDER: S-EPMC12731524 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature