نتایج جستجو برای: tetra n
تعداد نتایج: 981770 فیلتر نتایج به سال:
In the title compound, C(11)H(14)ClNO, the piperidine ring adopts a chair conformation: the hydroxyl substituent and the N-bound H atom occupy the axial positions, while the benzene ring occupies the equatorial position. In the crystal, the mol-ecules are linked into a centrosymmetric tetra-mer through strong O-H⋯N and weak N-H⋯O hydrogen bonds; the N and O atoms act as both donor and acceptor ...
A discrete neutral Cu(II) complex, [Cu(CF(3)SO(3))(2)(C(16)H(18)N(4))], has been derived from the symmetrical tetra-dentate Schiff base, N,N'-bis-[1-(pyridin-2-yl)ethyl-idene]ethane-1,2-diamine. The copper centre assumes a tetra-gonally distorted pseudo-octa-hedral geometry with the O atoms of two trifluoro-methane-sulfonate anions coordinated weakly in the axial positions. The Cu-N distances l...
In the title compound, {[NiWO(4)(C(16)H(36)N(4))]·4H(2)O}(n), the Ni(II) ion lies on an inversion center and is octahedrally coordinated by four N atoms of the tetradentate macrocyclic 5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-decane (L) ligand in the equatorial plane and two O atoms of [WO(4)](2-) anions in axial positions. Each [WO(4)](2-) anion bridges two adjacent [NiL](2+) ...
The energy profiles of various configurations the tetra-n-butylammonium ion (Bu 4 N + ) arising by changing angle between a pair butyl ligands, as well rotating alkyl fragments in gas phase, were calculated using DFT methods. A hypothesis about most probable way conformations ions during phase transitions highly conductive solid electrolytes was proposed.
In the title compound, C(10)H(8)N(6)·2H(2)O, the central aromatic ring makes dihedral angles of 23.59 (15) and 16.99 (16)° with the terminal imidazole and tetra-zole rings, respectively, which are themselves almost coplanar [dihedral angle = 6.61 (18)°]. Two H atoms of the two water mol-ecules are half occupied. In the crystal packing, weak inter-molecular O-H⋯N, O-H⋯O and N-H⋯N hydrogen bonds ...
In the title compound, [CdCl(2)(C(18)H(14)N(4))(2)]·0.5H(2)O, the Cd atom assumes a distorted octa-hedral trans-CdCl(2)N(4) geometry arising from its coordination by two N,N'-bidentate 10,11,12,13-tetra-hydro-4,5,9,14-tetra-azabenzo[b]triphenyl-ene (TBBT) mol-ecules and two chloride ions. In the crystal, π-π aromatic stacking inter-actions between adjacent TTBT rings are seen, with a centroid-c...
In the title compound, [Mn(C(6)H(4)N(5)O)(2)(H(2)O)(2)]·2H(2)O, the Mn(II) ion is situated on an inversion centre and is coordinated by the O and N atoms of two bis-chelating 5-(2-pyridyl-1-oxide)tetra-zolate ligands and two O atoms of two water mol-ecules in a distorted octa-hedral geometry. All the water H atoms are involved in O-H⋯N and O-H⋯O hydrogen bonds with uncoordinated water O atoms a...
The title compound, [Cu(2){SC(NH(2))NHNH(2)}(6)]I(2), was obtained by the reaction of CuI and thio-semicarbazide (TSCZ) in acetonitrile. Each Cu(I) ion is coordinated by four S atoms of the TSCZ ligands, forming a tetra-hedral geometry. Centrosymmetric dimers are formed by two coordination tetra-hedra sharing a common edge, with a Cu⋯Cu distance of 2.8236 (14) Å. The I(-) ion does not have any ...
The transamination reaction of (2-pyridylmeth-yl)(triiso-propyl-silyl)amine with bis-{bis-(trimethyl-silyl)amido}zinc(II) yields the colorless title solvate, [Zn(C(15)H(27)N(2)Si)(2)]·0.5C(7)H(8)·0.25C(4)H(8)O. The title compound was crystallized from toluene and tetra-hydro-furan. There are two independent mol-ecules in the asymmetric unit. In each mol-ecule, the Zn atom is tetra-hedrally coor...
In the centrosymmetric title complex, [Cu(C(6)H(5)N(6))(2)], the Cu(II) ion is coordinated by four N atoms from two symmetry-related bidentate 5-(2-amino-3-pyrid-yl)tetra-zolate ligands in a slightly distorted square-planar environment. There are weak intra-molecular N-H⋯N hydrogen bonds between the two ligands. In the crystal structure, there are significant π-π stacking inter-actions between ...
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