co(ii) and cu(ii) promoted base hydrolysis of 2-cyano, 1, lo-phenanthroline was studied. at 298.2°k, cu(ii) reaction is more efficient (by a factor of 20) than either co(ll) and its analogues ni(ii) in promoting base hydrolysis.

Interaction of Pb(II) ion with modified banana shell (MBS) and banana shell (BS) during adsorption fromaqueous solution were investigated. Batch experiments were carried out to investigate the effect of contact time,pH, and IDMID ion concentration on adsorption efficiency. The favorable pll for maxim= Pb(II) adsorptionwas at 5.0. For the investigated IMOI) concentrations (10-80 mph), maximum ad...

In the crystal structure of the title compound, [Co(C(13)H(9)N(2)O)(2)]·2C(3)H(7)NO, the Co(II) ion is four-coordinated by two N atoms and two O atoms from two deprotonated 2-(1H-benzimidazol-2-yl)phenol ligands in a distorted tetra-hedral geometry. The dimethyl-formamide solvent mol-ecules are found inside a two-dimensional network structure formed by inter-molecular N-H⋯O hydrogen bonds linki...

An ion-exchange resin containing carboxylic acid groups was prepared by reaction of epoxidized soybean oil with triethylene tetramine, followed by hydrolysis of glycerides by using sodium hydroxide solution. The cation exchange capacity of the resins was determined to be 3.50 mequiv/g. The adsorption capacity for Cu , Ni , and Co on the obtained resin at pH 5.0 was found to be 192, 96, and 78 m...

In the title compound, [Co(C(12)H(13)N(2)O(3))(2)], the Co(II) ion is situated on a twofold rotation axis and is coordinated by two N and two O atoms from two symmetry-related Schiff base 2-(cyclo-pentyl-imino-meth-yl)-4-nitro-phenolate ligands (L) in a distorted tetra-hedral geometry. The cyclo-pentyl ring in L is disordered over two conformations in a 0.640 (19):0.360 (19) ratio.

In the title compound, [Co(C(10)H(6)N(3)O(4))(2)(H(2)O)(2)], the Co(II) ion is coordinated by two O atoms of two water mol-ecules, two imidazole nitro-gen atoms and two carboxyl-ate O atoms of the two trans-standing chelate ligands, displaying a distorted octa-hedral coordination geometry. A three-dimensional supra-molecular framework is generated through N-H⋯O, O-H⋯N and O-H⋯O hydrogen-bonding...

In the title complex, [Co(C15H12BrClNO)2], the Co(II) ion is coordinated by two N,O-bidentate 2-bromo-4-chloro-6-[(E)-(2,6-dimethyl-phen-yl)imino-meth-yl]phenolate ligands, generating a squashed CoN2O2 tetra-hedral coordination geometry. The dihedral angles between the aromatic rings in the ligands are 82.60 (14) and 71.79 (14)°. The complex has approximate local noncrystallographic twofold sym...

The Co(II) ion in the title complex, (C(4)H(14)N(2))(2)[Co(C(2)O(4))(3)]·2H(2)O, is coordinated by three oxalate ions, resulting in a distorted octa-hedral geometry. Two uncoordinated water mol-ecules are present in asymmetric unit. Inter-molecular N-H⋯O and O-H⋯O hydrogen bonds between the different entities stabilize the crystal structure.

The central Co(II) ion in the title complex, [Co(C(16)H(19)N(5))(2)](NO(3))(2), is located on a twofold rotation axis and has a slightly distorted octa-hedral coordination sphere. It is bonded to six N atoms from two 2-[bis-(3,5-dimethyl-1H-pyrazol-1-yl)meth-yl]pyridine ligands. In the crystal, mol-ecules are linked by weak C-H⋯O inter-actions.

In the title complex, [Co(C(5)H(3)N(2)O(4))(2)(H(2)O)(2)]·2H(2)O, the Co(II) ion lies on an inversion center and is coordinated in a distorted octa-hedral environment. In the crystal structure, complex and water mol-ecules are linked into a three-dimensional network by O-H⋯O and N-H⋯O hydrogen bonds.