881734-77-6

Basic information

• Product Name: [PPN][Ni(II)(SPh)(P(o-C₆H₄S)2(o-C₆H₄SCH₃))]
• CAS NO: 881734-77-6
• Molecular Weight: 1076.95
• Mol File: 881734-77-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [PPN][Ni(II)(SPh)(P(o-C₆H₄S)2(o-C₆H₄SCH₃))](CAS DataBase Reference)
• NIST Chemistry Reference: [PPN][Ni(II)(SPh)(P(o-C₆H₄S)2(o-C₆H₄SCH₃))](881734-77-6)
• EPA Substance Registry System: [PPN][Ni(II)(SPh)(P(o-C₆H₄S)2(o-C₆H₄SCH₃))](881734-77-6)

Safety Data

• Hazardous Substances Data: 881734-77-6(Hazardous Substances Data)

Upstream product

• 769163-80-6 {PPN}{SPh} 
• 881734-75-4 [Ni(II)(PPh₃)(P(o-C₆H₄S)2(o-C₆H₄SCH₃))] 

Relevant articles and documents

Mononuclear [NiII(L)P-(o-C6H4S) 2(o-C6H4SH)]0/1- (L = Thiolate, selenolate, PPh3, and Cl) complexes with intramolecular [Ni...S...H...S]/[Ni...H...S] interactions modulated by the coordinated ligand L: Relevance to the [NiFe] hydrogenases

The shift of the IR νS-H frequency to lower wavenumbers for the series of complexes [NiII(L)(P-(o-C6H 4S)2(o-C6H4-SH))]0/1- (L = PPh3 (1), Cl (6), Se-p-C6H4-Cl (5), S-C 4H3S (7), SePh (4)) indicates that a trend of increasing electronic donation of the L ligands coordinated to the Ni(II) center promotes intramolecular [Ni-S...H-S] interactions. Compared to the Ni...S(H) distance, in the range of 3.609-3.802 A in complexes 1 and 4-7, the Ni...S(CH3) distances of 2.540 and 2.914 A observed in the [NiII(PPh3)(P(o-C6H4S) 2(o-C6H4-SCH3))] complexes (8a and 8b, two conformational isomers with the chemical shift of the thioether methyl group at δ 1.820 (-60°C) and 2.109 ppm (60°C) (C4D 8O)) and the Ni...S(CH3) distances of 3.258 and 3.229 A found in the [NiII(L)(P(o-C6H4S) 2(o-C6H4-SCH3))]1- complexes (L = SPh (9), SePh (10)) also support the idea that the pendant thiol protons of the Ni(II)-thiol complexes 1/4-7 were attracted by both the sulfur of thiolate and the nickel. The increased basicity (electronic density) of the nickel center regulated by the monodentate ligand attracted the proton of the pendant thiol effectively and caused the weaker S...H bond. In addition, the pendant thiol interaction modes in the solid state (complexes 1a and 1b, Scheme 1) may be controlled by the solvent of crystallization. Compared to complex 1a, the stronger intramolecular [Ni-S...H-S] interaction (or a combination of [Ni-S-H-S]/[Ni...H-S] interactions) found in complexes 4-7 led to the weaker S-H bond strength and accelerated the oxidation (by O 2) of complexes 4-7 to produce the [NiY(L)(P(o-C 6H4S)3)]1- (L = Se-p-C 6H4-Cl (11), SePh (12), S-C4H3S (13)) complexes.