. 2025 Aug 27;64(35):17935–17945. doi: 10.1021/acs.inorgchem.5c02940

1. Infrared and Electronic Absorption Parameters for V ₆ O ₆ ⁰, V ₆ O ₆ Cl ^–, V ₆ O ₆ SCN ^–, and V ₆ O ₇ ^–

species (ox. state distribution)	ν(SCN) (cm^–1)	ν(VO_t) (cm^–1)	ν(O_b–R) (cm^–1)	Δν (cm^–1)	λ (nm) (ε (M^–1 cm^–1))
V ₆ O ₆ ⁰ (V^IIIV^IV ₄V^V)		964	1040	76	392 (2740), 1000 (407)
V ₆ O ₆ Cl ^– (V^IIIV^IV ₄V^V)		956	1040	84	398 (2807), 1000 (400)
V ₆ O ₆ SCN ^– (V^IIIV^IV ₄V^V)	2081	953	1043	90	398 (2267), 1000 (322)
V ₆ O ₇ ^– (V^IV ₅V^V)		945	1045	100	390 (5750), 1000 (1331)

1. Infrared and Electronic Absorption Parameters for V 6 O 6 0 , V 6 O 6 Cl – , V 6 O 6 SCN – , and V 6 O 7 –