4,338 research outputs found
3,3′-Dimethyl-1,1′-(propane-1,3-diyl)diimidazol-1-ium bis(1,2-dicyanoethene-1,2-dithiolato-κ2 S,S′)nickelate(II)
In the title compound, (C11H18N4)[Ni(C4N2S2)2], the asymmetric contains one half-complex, with the cation placed on a twofold axis and the anion located on an inversion center. The NiII ion in the anion is coordinated by four S atoms of two maleonitriledithiolate ligands, and exhibits the expected square-planar coordination geometry
Approximation of the Summation-Integral-Type q
We introduce summation-integral-type q-Szász-Mirakjan operators and study approximation properties of these operators. We establish local approximation theorem. We give weighted approximation theorem. Also we estimate the rate of convergence of these operators for functions of polynomial growth on the interval [0,∞)
Hexaaquacobalt(II) bis{[N-(4-methoxy-2-oxidobenzylidene)glycylglycinato]copper(II)} hexahydrate
In the crystal structure of the title compound, [Co(H2O)6][Cu(C12H11N2O5)]2·6H2O, the CoII atom is located on an inversion center and coordinated by six water molecules in a slightly distorted octahedral geometry. The CuII atom is chelated by the Schiff base ligand in a distorted CuN2O2 square-planar geometry. An extensive O—H⋯O hydrogen-bonding network is present in the crystal structure
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