156974-07-1

Basic information

• Product Name: bis(μ-3-tert-butyl-5-methyl-2-oxobenzaldehyde)bis[cis-methyl(trimethylphosphine)nickel]
• CAS NO: 156974-07-1
• Molecular Weight: 682.106
• Mol File: 156974-07-1.mol

Chemical Properties

• CAS DataBase Reference: bis(μ-3-tert-butyl-5-methyl-2-oxobenzaldehyde)bis[cis-methyl(trimethylphosphine)nickel](CAS DataBase Reference)
• NIST Chemistry Reference: bis(μ-3-tert-butyl-5-methyl-2-oxobenzaldehyde)bis[cis-methyl(trimethylphosphine)nickel](156974-07-1)
• EPA Substance Registry System: bis(μ-3-tert-butyl-5-methyl-2-oxobenzaldehyde)bis[cis-methyl(trimethylphosphine)nickel](156974-07-1)

Safety Data

• Hazardous Substances Data: 156974-07-1(Hazardous Substances Data)

Upstream product

• 41715-31-5 3-tert-butyl-5-methylsalicylaldehyde 

Relevant articles and documents

Ligand-induced fragmentation of methylnickel phenolates containing a 2-aldehyde function: Structure of (3-tert-butyl-5-methyl-2-oxobenzoyl)-tris(trimethylphosphine)nickel

O-bridging salicylaldehyde derivatives in dimeric methylnickel compounds NiMe(OR)-(PMe3) showing equilibria of cis and trans forms (OR = 2-oxobenzaldehyde (1), 3-tert-butyl-5-methyl-2-oxobenzaldehyde (2), 3,5-di-tert-butyl-2-oxobenzaldehyde (3), 2-oxonaphthaldehyde (4)) spontaneously undergo, upon addition of trimethylphosphine, a fragmentation reaction forming 2-oxobenzoyl-C,O chelating ligands in 18-electron mononuclear complexes Ni(O?=O)(PMe3)3 (O?=O = 2-oxobenzoyl (5), 3-tert-butyl-5-methyl-2-oxobenzoyl (6), 3,5-di-tert-butyl-2-oxobenzoyl (7), 2-oxonaphthoyl (8)). The molecular structure of 6 contains pentacoordinate nickel with a chelate bite angle C-Ni-O = 85.5(1)°. Dissociation of phosphine ligands in 5 gives Ni(O?=O)(PMe3)2 (9) and [Ni(O?=O)(PMe3)]2 (10), but no mobilization of carbonyl ligands could be observed in the presence of Ni(PMe3)4 as CO acceptor.