The first mononuclear molybdenum(V) complex with a terminal sulfido ligand: dichloro[hydrotris(3,5-dimethyl-1-pyrazolyl)borato]sulfidomolybdenum

Scorpionate Complexes as Models for Molybdenum Enzymes

“…· Synthesis and spectroscopic characterization of the sulfido‐Mo V complex, [Tp*MoSCl 2 ], including the observation of strong S 1s →π*(S 3p + Mo 4d ) S K‐pre‐edge X‐ray absorption transitions indicative of terminal sulfido ligation , …”

“…The derivatization of [Tp*MoSCl 2 ] has also been reported since 2000 and this has permitted structural and spectroscopic studies of sulfido‐Mo V species, [Tp*MoSX 2 ] {X = phenolate derivative; X 2 = catecholate (cat 2– ), bdt 2– , tdt 2– }, and their comparison to the oxido analogues above , . The sequence of reactions leading to [Tp*MoSX 2 ] is shown in Equation ; it involves sulfidation of 35 to produce [Tp*MoSCl 2 ] 41 followed by metathesis with the triethylammonium salts of X – /X 2 2– to give desired [Tp*MoSX 2 ] 42 .…”

Mononuclear Thiomolybdenyl Complexes − Synthesis and Structural and Spectroscopic Characterization

“…Indeed, only two mononuclear thiomolybdenyl complexes have ever been isolated and completely characterized. The first of these, Tp*Mo V SCl 2 [Tp* = hydrotris(3,5‐dimethylpyrazol‐1‐yl)borate], was reported by Young et al in 1987 18. This complex was prepared by treating Tp*MoOCl 2 with boron sulfide and has been characterized by infrared, UV‐visible, electron paramagnetic resonance (EPR), Raman, and X‐ray absorption (XAS) and extended X‐ray absorption fine structure (EXAFS) spectroscopy 18−21.…”

d1 Oxosulfido-Mo(V) Compounds: First Isolation and Unambiguous Characterization of an Extended Series

“…46 × 10 −4 cm −1 and 37 × 10 −4 cm −1 for hard and soft ligand donors, respectively). 3,64,65 The spectra are also distinct from those reported for various dioxo-Mo(V) analogues, [Tp x MoO 2 X] − ; these complexes contain two strong field oxo ligands in a cis configuration and exhibit highly anisotropic spectra (Δg ca. 0.15−0.18) with lower g iso (∼1.90−1.93) and marginally higher A iso (∼40−45 × 10 −4 cm −1 ) values (especially when comparing analogous pairs of compounds).…”