A Tetranuclear Propane-1,3-Dithiolate Complex, [Fe2(CO)5{Ph2P(CH2)3}{(µ-SCH2)2CH2}]2, with a Bridging 1,6-Bis(diphenylphosphino)hexane Ligand

Autor: Shafikul Islam, Imran Hossain, Md. Mahfujar Rohman, Nikhil Chandra Bhoumik, Md. Manzurul Karim
Rok vydání: 2021
Předmět:
Zdroj: Journal of Chemical Crystallography. 52:223-232
ISSN: 1572-8854
1074-1542
DOI: 10.1007/s10870-021-00910-4
Popis: The 2:1 molar reaction of [Fe2(CO)6{(µ-SCH2)2CH2}] (1) and a bidentate diphosphine ligand, 1,6-bis(diphenylphosphino)hexane (dpph), in the presence of Me3NO resulted in the isolation of [Fe2(CO)5{Ph2P(CH2)3}{(µ-SCH2)2CH2}]2 (2) as red crystals in 71 % yield. The dpph ligand in compound 2, coordinates two Fe2S2 subunits as bridging mode and hence makes a linkage between two [Fe2(CO)5{(µ-SCH2)2CH2}] fragments. Each Fe2S2 butterfly of the complex consists of two fused Fe(S-C-C-C-S) six-membered rings, one of which attains a chair conformation, and the other is necessarily in a boat conformation. Compound 2 has unequivocally been characterized by elemental analysis, IR, 1H NMR and 31P NMR spectroscopy together with single crystal X-ray diffraction studies. Crystals of 2 are triclinic, space group P-1, a = 9.918(4) A, b = 10.347(3) A, c = 14.581(5) A, α = 72.239(12)o, β = 80.342(12)o, γ = 68.550(14)o and Z = 1. A novel tetranuclear propane-1,3-dithiolate complex, [Fe2(CO)5{Ph2P(CH2)3}{(μ-SCH2)2CH2}]2 (2), bearing a bridging bis(diphenylphosphino)hexane (dpph) ligand, was synthesized from the Me3NO aided room temperature displacement of carbonyls from [Fe2(CO)6{(μ-SCH2)2CH2}] (1), and structurally characterized.
Databáze: OpenAIRE
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