55881-15-7Relevant articles and documents
The chemistry of cobalt acetate - IV.? the isolation and crystal structure of the symmetric cubane, tetrakis[(μ-acetato)(μ3-oxo) (pyridine)cobalt(III)] chloroform solvate, [Co4(μ-O)4(μ-CH3CO2) 4(C5H5N)4] 5CHCl3 and of the dicationic partial cubane, trimeric
Beattie, James K.,Hambley, Trevor W.,Klepetko, John A.,Masters, Anthony F.,Turner, Peter
, p. 1343 - 1354 (1998)
The isolation from cobalt(III) acetate and characterisation by single crystal X-ray diffraction (refined to R = 0.087, Rw = 0 084) of the symmetric neutral cubane, [Co4-(μ3-O)4(μ-CH3CO 2)4(C5H5N)4], and of the hexafluorophosphate salt (refined to R = 0.078, Rw = 0.073) of the trimeric dication, the partial cubane, [Co3(μ3-O)(μ-OH)3(μ-CH 3CO2)(CH3CO2)(C5H 5N)6]2+, are reported. The cubane crystallises as its chloroform solvate, [Co4(μ3-O)4(μ-CH3CO 2)4(C5H5N)4] · 5CHCl3, whilst the partial cubane crystallises as its water solvate, [Co3(μ,-O)(μ-OH)3(μ-CH3CO 2)(CH3CO2)(C5H5N) 6][PF6]2·2H2O. The cubane and partial cubane dication have average Co ... Co distances of 2.818(8), 2.683(6) and 2.918(6), 2.767(5) A, respectively, and average Co - μ3-O distances of 1.86 and 1.91 A, respectively.
Synthesis and characterization of some trinuclear cobalt(II) thiocarboxylates
Baranwal,Gupta, Tarkeshwar
, p. 1855 - 1864 (2002)
Some cobalt(II) complexes of thiocarboxylic acids with the general composition Co(SOCR′)2 and Co(SOCR′)(OOCR) [where R = C13H27, C15H31 or C17H35 and R′ = CH3 or C6H5] have been synthesized by substitution reactions and characterized by elemental analyses, spectral studies and magnetic moment measurements. The electrical conductance data indicate that (Co(SOCCH3)2 is a 1:2 electrolyte while the other complexes are non-electrolytes. IR spectra show the presence of bidentate and bridging modes of coordination for carboxylate and thiocarboxylate anions, respectively. Electronic spectral data and magnetic moment values indicate an octahedral environment around cobalt(II). The plausible structure for the trimeric species has been proposed on the basis of the physico-chemical studies. Thermoanalytical data indicate the complexes are stable upto 175°C, above which decomposition starts.
Co(II)-salen catalyzed stereoselective cyclopropanation of fluorinated styrenes
Tai, Serene,Maskrey, Taber S.,Nyalapatla, Prasanth R.,Wipf, Peter
, p. 1014 - 1027 (2019/11/14)
Three cis-selective Co(II)-salen complexes have been developed for the asymmetric cyclopropanation of para-fluorinated styrenes with ethyl diazoacetate. Increasing the steric reach of the C2-symmetric ligand side chains improved the enantiomeric ratio of the reaction from 28:1 to 66:1. The methodology was exemplified by the gram-scale synthesis of a lead compound for the treatment of castration-resistant prostate cancer (CRPC), as well as a structurally related analog.
Kinetic stability of complexes of some d-metals with 3,3'- bis(dipyrrolylmethene) in the binary proton-donor solvent acetic acid-benzene
Antina,Guseva,V'yugin,Antina
, p. 1293 - 1297 (2013/01/14)
The kinetics of dissociation of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) binuclear homoleptic double-stranded helicates with bis(2,4,7,8,9- pentametyldipyrrolylmethen-3-yl)methane (H2L) of the [M 2L2] composition
