نتایج جستجو برای: ni complex

تعداد نتایج: 832627  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

2008
Juraj Kuchár Juraj Černák

The title compound, [Ni(C(3)H(10)N(2))(3)][Ni(CN)(4)], is built up of [Ni(pn)(3)](2+) cations (pn is 1,2-diamino-propane) and [Ni(CN)(4)](2-) anions. Both Ni(II) atoms in the cation and the anion lie on a mirror plane. The respective ions inter-act through Coulombic forces and through a complex network of hydrogen bonds. Extended disorder associated with the cation has been resolved. The occupa...

2011
Junsheng Hao Haimei Liu Hai-Yan Yuan

The title compound, [Ni(C(15)H(24)NSi)(2)], is a homoleptic metal-η(3)-aza-allyl centrosymmetric complex containing two aza-allyl ligands bound in an η(3)-manner to an Ni(II) atom located on a center of symmetry. The overall coordination about the Ni(II) atom is square-planar. The C and N atoms of the aza-allyl group are sp(2)-hybridized. The uneven Ni-C and Ni-N distances [2.045 (5)/2.060 (6) ...

2016
J. Gieraltowski J. GIERALTOWSKI

— The influence of the Zn and Cd ion contents upon the natural spin resonance in Ni-Zn and Ni-Cd ferrites has been investigated. Previous experiments by other authors have shown that substituting Zn ions for Ni ions leads to a change of the total effective anisotropy field and consequently of the natural spin resonance frequency fi. ft measurements have been carried out by using a coaxial line ...

2010
Yin Zheng Shi-Rong Li Hong Zhou Zhi-Quan Pan Yi-Zhi Li

In the title dinuclear nickel(II) complex, [Ni(2)(C(8)H(4)FO(3))(2)(H(2)O)(4)]Cl(2), synthesized by the reaction between 4-fluoro-2,6-diformyl-phenol and nickel(II) chloride in methanol, the coordination cation is located on an inversion center and the Ni(II) atom adopts a slightly distorted octa-hedral coordination geometry. The two Ni atoms are bridged by two phenolate O atoms and the intra-m...

Journal: :Inorganic chemistry 2000
W F Liaw C Y Chiang G H Lee S M Peng C H Lai M Y Darensbourg

Reaction of [PPN][Fe(NO)2(SePh)2] (1) with dimeric [Ni(mu-SCH2CH2SCH2CH2S)]2 in the presence of additional NO2- produced the neutral heterobimetallic [(ON)Ni[(mu-SCH2CH2)2S]Fe(NO)2] complex (2). The X-ray crystal structures of 1 and 2 show distorted tetrahedral iron dinitrosyl groups, assigned according to the Feltham-Enemark notation as [Fe(NO)2]9 The Fe-NO bonds are off linearity by an averag...

2012
Sujirat Boonlue Chatphorn Theppitak Kittipong Chainok

The asymmetric unit of the title complex, [Ni(C₁₀H₈N₂)(H₂O)₄]SO₄, consists of a complex [Ni(bipy)(H₂O)₄]²⁺ cation (bipy = 2,2'-bipyridine) and a non-coordinating [SO₄]²⁻ anion. The Ni(II) atom is six-coordinated in a distorted octa-hedral geometry defined by the two N atoms of the bipy ligand and four water O atoms. The crystal structure contains extensive classical O-H⋯O hydrogen bonds, which ...

2010
Gervas E. Assey Ray J. Butcher Yilma Gultneh

The title square-planar nickel complex, [Ni(C(20)H(22)N(2)O(6))], has Ni-N and Ni-O bond lengths of 1.8448 (14)/1.8478 (14) and 1.8536 (12)/1.8520 (12) Å. There is a slight twist in the two benzene rings at each end of the complex [dihedral angle = 11.11 (5)°]. All the atoms of the meth-oxy substitutents are in the plane of the ring to which they are attached except for one which deviates sligh...

2007
Yu-Peng Pan Da-Cheng Li Da-Qi Wang

The title complex, [Ni(2)(C(4)H(8)N(4)O(2))(6)](NO(3))(4)·2CH(4)O, contains a centrosymmetric binuclear nickel(II) complex bridged by a pair of 4-amino-3,5-bis-(hydroxy-meth-yl)-1,2,4-triazole ligands. The separation between the Ni(II) atoms is 3.962 (1) Å. The Ni atoms are in a slightly distorted octa-hedral coordination. Inter-molecular N-H⋯O, N-H⋯N and O-H⋯O hydrogen bonds connect the ligand...

2008
Yujing Guo Lianzhi Li Yan Liu Jianfang Dong Daqi Wang

The title complex, [Ni(4)(C(12)H(15)NO(4))(4)]·4H(2)O, has crystal-lographic fourfold inversion symmetry, with each Ni(II) ion coordinated in a slightly distorted square-pyramidal coordination environment and forming an Ni(4)O(4) cubane-like core. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds connect complex and water mol-ecules to form a three-dimensional network. The O atom o...

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