186358-88-3Relevant academic research and scientific papers
Formation and homolysis of organonickel(III) complexes
Kelley, Dougles G.,Marchaj, Adam,Bakac, Andreja,Espenson, James H.
, p. 7583 - 7587 (2007/10/02)
The reactions of Ni(1,4,8,11-tetraazacyclotetradecane)2+ with alkyl radicals were studied. Data were collected for the R,R,S,S (or β) and R,R,R,R (or α) isomers. The reactions form σ -bonded organometalllc cations, as in the equation NIL2+
Stabilization of the monovalent nickel complex with 1,4,8,11-tetraazacyclotetradecane in aqueous solutions by N- and C-methylation. An electrochemical and pulse radiolysis study
Jubran, Nusrallah,Ginzburg, Gregory,Cohen, Haim,Koresh, Yaacov,Meyerstein, Dan
, p. 251 - 258 (2008/10/08)
The divalent nickel complexes with 1,4,8,11-tetraazacyclotetradecane (L1), 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane (L2), meso-5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane (L3), and 1,4,5,7,7,8,11,12,14,14-decamethyl-1,4,8,11-tetraazacyclotetradecane (L4) were reduced by reactions with eaq- and CO2-? and by electrochemical reactions in aqueous solutions. The redox potentials of the NiLi2+/NiLi+ couples are -1.58, -1.15, -1.42, and -0.98 V vs. SCE for i = 1, 2, 3, and 4, respectively. The UV absorption bands of NiLi+ are attributed to CTTS transitions. The kinetics of reduction of Co(NH3)63+, Ru(NH3)63+, O2, and N2O by NiLi+ are reported and discussed. The self-exchange rates of reaction between NiLi+ and NiLi2+ were calculated by using the Marcus cross relation. The EPR spectra of NiL2+ and NiL4+ are reported. The complexation of NiLi2+ by OH- was studied. The results are discussed in detail. NiL2+ and NiL4+ are suggested as new, powerful, easily attainable single-electron-reducing agents that can be used over a wide pH range in aqueous solutions.
