نتایج جستجو برای: poly o

تعداد نتایج: 629561  

2012
Zhan-Ling Ma

In the title coordination polymer, [Cd(C(16)H(12)O(8)S)(H(2)O)(2)](n), the Cd(II) ion is situated on a crystallographic twofold rotation axis, being coordinated by four O atoms from two bidentate 4,4'-[sulfonyl-bis-(1,4-phenyl-ene-oxy)]diacetate (L) ligands and two water mol-ecules in a highly distorted CdO(6) octa-hedral geometry. Each complete ligand L, which is also generated by twofold symm...

2009
Bi-Song Zhang

The hydro-thermal reaction of SrCO(3) and 2-bromo-benzoic acid in CH(3)OH-H(2)O afforded the Sr(II) title polymeric complex, [Sr(C(7)H(4)BrO(2))(2)(H(2)O)(2)](n). Within the coordination sphere, the Sr(II) ion is located on a crystallographic twofold axis, and is coordinated by eight O atoms from two water mol-ecules and four carboxyl-ate groups of 2-bromo-benzoate ligands in an irregular coord...

Journal: :Journal of molecular biology 1968
W Doerfler D S Hogness

Each of the intact complementary strands of DNA from bacteriophage /\ has been isolated by virtue of the different buoyant densities they exhibit in alkaline C&l. Preparations of a given strand are free ( < 1%) of the other strand and do not contain detectable amounts of fragments. Individual &ran& exhibit no significant activity for the genes of X in the helper-phagge assay of Kaiser BE Hognes...

2009
Bo Liu Qiang Xu

The title compound, [Zn(C(14)H(8)N(2)O(4))(H(2)O)(2)](n), consists of zigzag chains of Zn atoms bridged by azobenzene-4,4'-dicarboxyl-ate ligands. The Zn(II) atom, lying on a twofold rotation axis, is coordinated by four O atoms from the carboxyl-ate groups and two water mol-ecules, giving rise to a considerably distorted octa-hedral coordination envionment. The ligand lies on an inversion cent...

2011
Ying-Ying Zhao

In the title coordination polymer, [Co(C(14)H(16)O(6))(H(2)O)(2)](n), the Co(II) ion, situated on a twofold rotation axis, is coordinated by four O atoms from two 4,4'-[1,4-phenyl-enebis(-oxy)]dibutano-ate (L) ligands and two water mol-ecules in a highly distorted octa-hedral geometry. Each L ligand is situated on an inversion center and bridges two Co(II) atoms, forming a zigzag polymeric chai...

2011
Daniel M. Seo Paul D. Boyle Wesley A. Henderson

In the title compound, [Li(2)(CF(3)SO(2)NSO(2)CF(3))(2)(CH(3)CN)(2)](n), two Li(+) cations reside on crystallographic inversion centers, each coordinated by six O atoms from bis(trifluoromethanesulfonyl)imide (TFSI(-)) anions. The third Li(+) cation on a general position is four-coordinated by two anion O atoms and two N atoms from acetonitrile mol-ecules in a tetra-hedral geometry.

2011
Jacob W. Uebler Robert L. LaDuca

In the title compound, {[Cd(C(10)H(8)O(4))(H(2)O)(3)]·2H(2)O}(n), penta-gonal-bipyramidally coordinated Cd(II) ions on a twofold rotation axis are linked by tethering 1,4-phenyl-enediacetate (1,4-phda) ligands into [Cd(1,4-phda)(H(2)O)(3)](n) coordination polymer chains. The chain motifs are oriented parallel to the c-axis direction. Individual chains are connected into a supra-molecular networ...

2016
Hsiao-Yuan Ma Tzong-Liu Wang Pei-Yu Chang Chien-Hsin Yang

Organic-inorganic hybrid sols (Ti-O-Si precursor) were first synthesized by the sol-gel method at low addition of water, and were then employed to prepare a highly refractive hybrid optical film. This film was obtained by blending the Ti-O-Si precursor with 2-phenylphenoxyethyl acrylate (OPPEA) to perform photo-polymerization by ultraviolet (UV) irradiation. Results show that the film transpare...

2018
Christian Konrad

We give a maximal independent set (MIS) algorithm that runs in $O(\log \log \Delta)$ rounds in the congested clique model, where $\Delta$ is the maximum degree of the input graph. This improves upon the $O(\frac{\log(\Delta) \cdot \log \log \Delta}{\sqrt{\log n}} + \log \log \Delta )$ rounds algorithm of [Ghaffari, PODC '17], where $n$ is the number of vertices of the input graph. In the first ...

2008
Hwa-Jung Kim Ming-Hua Piao Seong-Ho Choi Chang-Ho Shin Young-Taeg Lee

A modified electrode for hydrogen peroxide (H₂O₂) sensing was prepared via thiophene (Th) with epoxy group. Thiophene (EpoxyTh) with epoxy group was synthesized by reaction of 3-bromothiophene and glycidyl methacrylate (GMA) in acetonitrile according to Heck Reaction. The electrocopolymerization of Th and EpoxyTh was performed on the surface of indium tin oxide (ITO) electrode by cycling the po...

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