نتایج جستجو برای: ni 19
تعداد نتایج: 496530 فیلتر نتایج به سال:
In the title compound, (C(6)H(10)N(2))[Ni(C(7)H(3)NO(4))(2)]·5H(2)O, the Ni(II) ion is six-coordinated by two N and four O atoms from two pyridine-2,6-dicarboxyl-ate ligands in a distorted octa-hedral fashion. The crystal packing is stabilized by inter-molecular O-H⋯O and N-H⋯O and weak C-H⋯O hydrogen bonds and π-π inter-actions [centroid-centroid distances = 3.4669 (19) and 3.764 (2) Å].
The title compound, [Ni(C(25)H(19)N(4)O(2))(2)], which was obtained by the reaction of nickel(II) perchlorate with 2,6-diformyl-4-methyl-phenol and (tri-2-pyridylmeth-yl)amine in methanol solution, is a discrete monometallic complex. The Ni(II) atom is six-coordinated by the phenolate O, imine N and pyridine N atoms from two tridentate Schiff base ligands in a distorted NiN(4)O(2) octa-hedral g...
In the title compound, [Ni(NCS)(2)(C(13)H(19)N(3)O)(H(2)O)], the Ni(II) ion is six-coordinated by the N,N',N''-tridentate Schiff base, the N atoms of two thio-cyanate ligands and one water O atom in a distorted octa-hedral geometry. Intra-molecular C-H⋯N and C-H⋯O hydrogen bonds occur. In the crystal, O-H⋯S, O-H⋯O and C-H⋯S hydrogen bonds link adjacent mol-ecules into layers parallel to the ac ...
the incidence of vancomycin-resistant enterococci infection in a medical intensive care unit, which would seem to support the claim that clothes are a potential fomite for NI. NI accounted for 1.7 million infections in 2002, which resulted in 99,000 deaths in the United States, and it is estimated to cost $6.7 billion per year [19, 20]. With such a significant impact from NIs, it is understanda...
OBJECTIVES Non-inferiority (NI) randomized clinical trials (RCTs) commonly evaluate efficacy of new antiretroviral (ARV) drugs in human immunodeficiency virus (HIV) patients. Their reporting and interpretation have not been systematically evaluated. We evaluated the reporting of NI RCTs in HIV patients according to the CONSORT statement and assessed the degree of misinterpretation of RCTs when ...
PURPOSE To determine if melanoma within the tumor microenvironment will result in immunosuppression within the draining lymph node as measured by down-regulation of T-cell receptor zeta (TCR zeta) expression. EXPERIMENTAL DESIGN Patients with clinical stage I to III melanoma undergoing wide local excision and sentinel lymph node biopsy or therapeutic lymph node dissection were consented to ha...
In the crystal structure of the title Ni(II) complex, [Ni(C(6)H(4)NO(3))(2)(C(3)H(4)N(2))(2)], the Ni(II) atom is located on a twofold rotation axis and is chelated by two oxidopyridiniumcarboxyl-ate anions and further cis-coordinated by two imidazole ligands in a distorted cis-N(2)O(4) octa-hedral geometry. The C-O bond distance of 1.2573 (19) Å found for the non-coordinating O atom of the car...
The reaction of nickel salts and 4,4'-bipyridine with 2,2'-bi-imidazole (H(2)biim) yielded the title complex, [Ni(C(6)H(6)N(4))(3)](NO(3))(2)·C(3)H(7)NO. The Ni(II) atom is chelated by three H(2)biim ligands in a distorted octa-hedral coordination geometry. The two nitrate anions and one dimethyl-formamide (DMF) mol-ecule are not coordinated. The compound has a three-dimensional structure, form...
The title compound, [Ni(C(11)H(19)O(2))(2)(C(12)H(8)N(2))], was obtained from the reaction of bis-(2,2,6,6-tetra-methyl-heptane-3,5-dionato)nickel(II), [Ni(dpm)], and 1,10-phenanthroline (phen). The Ni(II) ion is coordinated by four O atoms from two dpm ligands and two N atoms from a phen ligand in a slightly distorted octa-hedral environment. The methyl C atoms of two of the tert-butyl groups ...
The complete mol-ecule of the title complex, [Ni(C(19)H(21)N(2)OS(2))(2)], is generated by the application of twofold symmetry. The Ni(II) atom is N,S-chelated by two hydrazinecarbodithio-ate ligands, which provide an N(2)S(2) donor set that defines a distorted square-planar geometry, the S atoms being approximately cis. The conformation of the chelate ring is an envelope with the Ni(II) atom b...
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