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- W1969218178 abstract "The complexes M(CO)3Br(DBSD-N,N′) (M Mn or Re; DBSD = di-t-butylsulfurdiimine = tBuNSN tBu) have been prepared by reaction of M(CO)5Br with DBSD. The complexes have been characterized spectroscopically (1H-NMR, IR, UV/Vis and resonance Raman) and used as starting materials for the preparation of the metal-metal bonded complexes (CO)8MM′(DBSD-N,N′) (M,M′ Mn, Re). The structure of (CO)8Mn2(DBSD-N,N′) has been determined by X-ray crystallography. Both Mn atoms have slightly distorted octahedral geometry, and the MnMn distance (2.967 Å) is longer than that in Mn2(CO)10 (2.9038 Å). The DBSD is bonded to Mn as a chelate in its trans, trans-conformation, and the NS bond lengths and NSN bond angle are nearly the same as in W(CO)4(DBSD-N,N′). The complexes (CO)8MM′(DBSD-N,N′) are transformed thermally and photochemically, into (CO)6 MM′(μ-DBSD-N,N′:N,S,N′); during this reaction the coordination of the DBSD ligand changes from chelate to bridging. This has been established by an X-ray structural study of (CO)6Mn2(μ-DBSD-N,N′:N,S,N′). Both Mn atoms possess a distorted octahedral geometry and the MnMn distance (2.638 Å) is very short. The NS bond distances are increased from ∼ 1.60 Å in the unbridged complex to ∼ 1.70 Å in this bridged species, which contains the longest NS bond observed so far for a sulfurdiimine ligand. The mechanism of the photochemical formation of this complex is discussed." @default.
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- W1969218178 date "1993-11-01" @default.
- W1969218178 modified "2023-09-27" @default.
- W1969218178 title "Syntheses, structures, and spectroscopic properties of novel sulfurdiimine complexes; spectroscopic properties of the di-t-butylsulfurdiimine (DBSD) complexes M(CO)3Br(DBSD-N,N′) (M Mn, Re) and X-ray structures of the metal-metal bonded compounds (CO)8Mn2(DBSD-N,N′) and (CO)6Mn2(μ-DBSD-N,N′: N, S, N′)" @default.
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- W1969218178 doi "https://doi.org/10.1016/0022-328x(93)83284-3" @default.
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