Transmetalation reactions of tetranuclear copper(II) complexes. 2. Stoichiometry and products of reaction of [(DENC)CuCl]4O2, [(DENC)CuCl]4(CO3)2, [(DENC)CuCl]4Cl4, and (DENC)4Cu4Cl6O (DENC = N,N-diethylnicotinamide) with Ni(NS)2 , the kinetics of product isomerization in aprotic solvents, and inhibition of copper-catalyzed phenolic oxidative coupling by dioxygen through transmetalation

Synthesis and characterization of a binuclear copper(II) complex [Cu(H2slox)]2 from polyfunctional disalicylaldehyde oxaloyldihydrazone and its heterobinuclear copper(II) and molybdenum(VI) complexes

“…The synthesis of heterobimetallic products is accessible by strategies developed by Lintvedt et al [30] via a monometallic intermediate with polyfunctional ligands and Davies et al [31] via transmetallation beginning with a complex of discrete molecularity as target and another metal complex as transmetallator. Accordingly, 1 is synthesized by template method by reacting oxaloyldihydrazine, Cu(OAc) 2 ÁH 2 O, and salicylaldehyde in 1 : 1 : 3 molar ratio in methanol.…”

Products and Kinetics of the Reaction of Monomeric Target Bis-(Acetylacetonato) Copper(II) with Transmetalator Bis-(Diethoxydithiophosphato) Zinc(II) in Methylene Chloride

“…Transmetalation is the stoichiometric replacement of the metals in a polymetallic target with other metals from reagents called transmetalotors [1]. It is a source of many new heteropolymetallic molecules that cannot be obtained by other means [2].…”

“…It is a source of many new heteropolymetallic molecules that cannot be obtained by other means [2]. The transmetalation phenomenon has mostly been applied to polynuclear copper(I) [3]- [5] and copper(II) [1] [5]- [13] targets, although it is also applicable to targets containing other transition metals [10]. The best known transmetalators are S-methyl hydrazinecarbodithioate complexes M(NS) 2 , where M is Co, Ni, Cu and Zn and NS is monoanionic S-methyl isopropylidenehydrazinecarbodithioate and S-methyl benzyllidenehydrazinecarbodithioate in reagents a and b, respectively.…”

“…The best known transmetalators are S-methyl hydrazinecarbodithioate complexes M(NS) 2 , where M is Co, Ni, Cu and Zn and NS is monoanionic S-methyl isopropylidenehydrazinecarbodithioate and S-methyl benzyllidenehydrazinecarbodithioate in reagents a and b, respectively. Transmetalation reactions proceed under mild conditions in aprotic solvents and the heteropolymetallic products are easily separated [1] [2]. The major driving force for stoichiometric copper replacement is the formation of highly stable co-products Cu(NS) (S) and Cu(NS) 2 as typified by Equations (1) [5] and (2) [7], where the transmetalator is A; L is an N,N,N',N'-tetraalkyldiamine; N is a mohodentate pyridine ligand and X is Cl…”

Kinetics of the reaction of arylethanediylidene‐bis‐dithiocarbazonoate Ni complexes with morpholine in benzene: Substituent and temperature effects

“…Third, these complexes are known to have some biological activity [7][8][9]. Fourth, these types of complexes underwent transmetalation [10][11][12], ligand substitution [13,14], displacement of ligand from a substrate M-L (where L is a ligand) [15], or displacement of a leaving group from the ligand complex by various reagents [16]. The reactions of some α-diketones and α-keto aldehydes with methyl dithiocarbazoate to give the corresponding mono-and bishydrazones were also reported.…”