نتایج جستجو برای: complex cobalt ii

تعداد نتایج: 1332367  

2007
Fengli Yu Qibao Wang Xiaoyan Li

The title mol-ecule, [Co(C(6)H(5))(CN)(C(3)H(9)P)(3)], lies on a crystallographic mirror plane with the Co(II) ion coordinated in a distorted square-pyramidal environment with one of the P atoms in the apical position. In the basal plane, the phenyl substituent is trans to the cyanide group with a C-Co-C angle which is significantly distorted from linearity.

2010
Yanmei Chen Bin Xu Shixiong She Bin Hu Yahong Li

The structure of the title compound, [Co(C(13)H(11)N(4)O)(2)(CH(3)OH)(2)], is a mononuclear six-coordinated octa-hedral cobalt(II) complex of C(i) mol-ecular symmetry. The Co(II) ion is coordinated by two N atoms and two O atoms from two 1,5-biphenyl-carbazide ligands, and two O atoms from two methanol molecules. Two diphenyl-carbazidate ligands and the central Co(II) ion form the basal plane, ...

Journal: :Dalton transactions 2015
Joanna Palion-Gazda Tomasz Klemens Barbara Machura Julia Vallejo Francesc Lloret Miguel Julve

A novel two-dimensional coordination polymer of the formula [Co(dca)2(atz)2]n () resulted from assembling trans-bis(2-amino-1,3,5-triazine)cobalt(ii) motifs by dicyanamide spacers. Variable-temperature dc and ac magnetic susceptibility measurements of show that the high-spin cobalt(ii) ions act as single ion magnets (SIMs).

2014
S. Chandramouleeswaran Jayshree Ramkumar

Speciation studies of cobalt species, cobalt (II) and cobalt (III) have been carried out using spectrophotometric determination with the chromophoric reagent bis (5-bromosalicylaldehyde) orthophenilinediamine (BBSOPD). The methodology is direct and non extractive and is carried out in 40% ethanolic medium containing acetate buffer. The colour development is almost instantaneous and remained con...

2015
Jonathon E Beves Jonathan J Danon David A Leigh Jean-François Lemonnier Iñigo J Vitorica-Yrezabal

A molecular Solomon link was synthesized through the assembly of an interwoven molecular grid consisting of four bis(benzimidazolepyridyl)benzthiazolo[5,4-d]thiazole ligands and four zinc(II), iron(II), or cobalt(II) cations, followed by ring-closing olefin metathesis. NMR spectroscopy, mass spectrometry, and X-ray crystallography confirmed the doubly interlocked topology, and subsequent demeta...

Journal: :international journal of nano dimension 0
z. rahmani department of chemistry, takestan branch, islamic azad university , takestan ,iran. sh. ghammamy department of chemistry, faculty of science, imam khomeini international university, qazvin, iran. m. pourheravy department of chemistry, faculty of science, payam noor university, abhar, iran.

synthesis, identification and thermal behavior studies of nanoparticles cobalt (ii) bromide has been studied in this research. cobalt (ii) bromide was synthesized by planetary high-energy ball mill. the general formula of this compound is cobr2.6h2o. the synthesized nanoparticles were characterized by fourier transform infrared spectroscopy and also size and structure of synthesized nanoparticl...

Journal: :Journal of the American Chemical Society 2002
David M Jenkins Theodore A Betley Jonas C Peters

The synthesis of the first terminal imido complex of cobalt, [PhBP3]CoN-p-tolyl, is reported. Its synthesis proceeds by oxidative group transfer from cobalt(I) upon addition of tolyl azide at room temperature. This species and a related eta1-diazoalkane adduct have been structurally characterized. The diamagnetic imido complex [PhBP3]CoN-p-tolyl reacts with CO to liberate isocyanate and the cob...

An octahedral cobalt(III) complex, trans-[(Me2bpb)Co(bzlan)2]ClO4 (1), with H2Me2bpb = N,N’-(4,5-dimethyl-1,2-phenylene)dipicolinamide and bzlan = benzylamine, has been synthesized and characterized by elemental analyses, IR, UV-Vis, and 1H NMR spectroscopy. The structure of this complex has been determined by X-ray crystallography. The Me2bpb2– is a di-anionic tetradentate ligand furnishing a ...

Journal: :Chemical communications 2014
Atif Mahammed Biswajit Mondal Atanu Rana Abhishek Dey Zeev Gross

A surprising effect of halide substituents on reduction potentials and catalytic activity of halogenated cobalt corroles has been deduced by experimental and computational methods; the proton-activating cobalt(I) and the cobalt(II) corrole that is formed in the step during which hydrogen is formed are characterized by NMR spectroscopy.

2011
Chang-Xiang Liu Xiu-Ying Song Qian Liu Xu-Liang Nie Shi-He Wen

In the crystal structure of the title compound, [CoCl(2)(C(15)H(17)Cl(2)N(3)O)(4)], the Co(II) cation lies on an inversion center and has a slightly distorted octa-hedral coordination geometry. The equatorial positions are occupied by four N atoms from four diniconazole [systematic name: (E)-(RS)-1-(2,4-dichloro-phen-yl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol] ligands. The axial s...

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