Stable highly oxidizing cobalt complexes of macrocyclic ligands
摘要:
The first crystallographically characterized neutral square-planar complex of cobalt in an oxidation state higher than 2+, Co(eta-4-1), is reported. Structural data for this new class of compounds indicate that the macrocycle in Co(eta-4-1) is[GRAPHICS]noninnocent; however, EPR data in toluene at 5.9 K (S = 1/2; g1 = 2.558, g2 = 2.170, g3 = 2.017; A2 almost-equal-to 15 G) show that the metal center is the primary residence site of the unpaired electron. Co(eta-4-1) is a stable, yet potent, oxidant which is soluble in benzene and slightly soluble in pentane. The Co(eta-4-1)/[Co(III)(eta-4-1)]- couple is reversible and found at 0.550 V vs Fc+/Fc in CH2Cl2 (ca. 1.26 V vs NHE). Co(eta-4-1) slowly oxidized water, yielding H[Co(III)(eta-4-1)], which may also be prepared by the reaction of [Co(III)(eta-4-1)]- with HBF4. Both the redox and the acid/base chemistries of [Co(III)(eta-4-1)]- are reversible. Electrochemical and EPR data are also presented for Co(eta-4-2) and Co(eta-4-3).
Stable highly oxidizing cobalt complexes of macrocyclic ligands
摘要:
The first crystallographically characterized neutral square-planar complex of cobalt in an oxidation state higher than 2+, Co(eta-4-1), is reported. Structural data for this new class of compounds indicate that the macrocycle in Co(eta-4-1) is[GRAPHICS]noninnocent; however, EPR data in toluene at 5.9 K (S = 1/2; g1 = 2.558, g2 = 2.170, g3 = 2.017; A2 almost-equal-to 15 G) show that the metal center is the primary residence site of the unpaired electron. Co(eta-4-1) is a stable, yet potent, oxidant which is soluble in benzene and slightly soluble in pentane. The Co(eta-4-1)/[Co(III)(eta-4-1)]- couple is reversible and found at 0.550 V vs Fc+/Fc in CH2Cl2 (ca. 1.26 V vs NHE). Co(eta-4-1) slowly oxidized water, yielding H[Co(III)(eta-4-1)], which may also be prepared by the reaction of [Co(III)(eta-4-1)]- with HBF4. Both the redox and the acid/base chemistries of [Co(III)(eta-4-1)]- are reversible. Electrochemical and EPR data are also presented for Co(eta-4-2) and Co(eta-4-3).
A water-stable manganese(V)-oxo complex: definitive assignment of a .nu.Mnv.tplbond.O infrared vibration
作者:Terrence J. Collins、Richard D. Powell、Carla Slebodnick、Erich S. Uffelman
DOI:10.1021/ja00158a077
日期:1990.1
Collins, Terrence J.; Slebodnick, Carla; Uffelman, Erich S., Inorganic Chemistry, 1990, vol. 29, # 18, p. 3433 - 3436
作者:Collins, Terrence J.、Slebodnick, Carla、Uffelman, Erich S.
DOI:——
日期:——
Workman, José M.; Powell, Richard D.; Procyk, Alexander D., Inorganic Chemistry, 1992, vol. 31, # 9, p. 1548 - 1550
作者:Workman, José M.、Powell, Richard D.、Procyk, Alexander D.、Collins, Terrence J.、Bocian, David F.
DOI:——
日期:——
Bleach composition and bleaching detergent composition
申请人:Kaneda Hideyuki
公开号:US20090176681A1
公开(公告)日:2009-07-09
A bleach composition containing (a) a peroxide generating hydrogen peroxide by being dissolved in water, (b) a water-insoluble or poorly water-soluble textile powder selected from powder cellulose, silk powder, wool powder, nylon powder and polyurethane powder, and (c) (c-1) a bleaching activating catalyst and/or (c-2) a bleaching activator.
A bleaching detergent composition containing (a) a peroxide generating hydrogen peroxide by being dissolved in water, (b) a water-insoluble or poorly water-soluble textile powder selected from powder cellulose, silk powder, wool powder, nylon powder and polyurethane powder, and (c) (c-1) a bleaching activating catalyst or (c-1) a bleaching activating catalyst and (c-2) a bleaching activator, and (d) a surfactant.