نتایج جستجو برای: 44 bipyridine
تعداد نتایج: 98203 فیلتر نتایج به سال:
The new Cu(II) carboxylate complex, aqua(2,2'-bipyridine-κ2N,N')bis(4-methylbenzoato-κO)copper(II) [Cu(4-mba)2(bipy)(H2O)] (4-mba: 4-methylbenzoate, bipy: 2,2'-bipyridine) was synthesized, and the molecular structure of complex characterized by single crystal X-ray diffraction technique. analysis indicated that asymmetric unit comprises an independent molecule. Crystal data for [Cu(4-meb)2(2,2-...
The previously claimed (1) catalysis of the electroreduction of acrylonitrile by means of a complex of Co(l) and 2,2'-bipyridine is shown to be erroneous. The "catalytic currents" result instead from the two-electron reduction of a mixed complex of Co (I) acrylonitrile and 2,2' -bipyridine. The equilibrium and forward rate constants for the formation of the mixed complex have been estimated and...
A novel series of polypyridyl adducts, [Sm(ntfa)3(NN)] (2–4), with ntfa = 4,4,4-trifluoro-1-(naphthalen-2-yl)-1,3-butanedionate, NN 2,2′-bipyridine (bipy), 4,4′-dimethyl-2,2′-bipyridine (4,4′-Me2bipy), and 5,5′-dimethyl-2,2′-bipyridine (5,5′-Me2bipy) were synthesized from the precursor complex [Sm(ntfa)3(MeOH)2] (1) corresponding pyridyl ligands. Single X-ray crystallography showed that complex...
The title compound, [Re(2)(OH)(C(10)H(8)N(2))(2)(CO)(6)][ReO(4)], is a mixed-valence rhenium compound containing discrete anions and cations. The Re(I) atoms are in a slightly distorted octa-hedral environment, whereas the Re(VII) atoms show the typical tetra-hedral coordination mode. The dihedral angle between the two bipyridine groups is 34.3 (7)°.
The rapid synthesis of 4-aryl-2,2'-bipyridines is described leading to some previously reported compounds in good yields in addition to some new functionalized bipyridines.
Mixed-ligand ruthenium(II) complex with 2,2′-bipyridine and 1,10-phenanthroline-3,8-dicarboxylic acid the composition [Ru(phen-C)(bpy)2]Cl2·5H2O (bpy = 2,2′-bipyridine, phen-C 1,10-phenantroline-3,8-dicarboxylic acid) has been synthesized characterized by spectral data. The tested as photocatalyst in aerobic oxidation reactions, including transformation of arylboronic acids to phenols, primary ...
In the title compound, [Co(C(7)H(2)N(2)O(7))(C(10)H(8)N(2))(2)], the Co(II) atom is coordinated by four N atoms from two 2,2'-bipyridine ligands and two O atoms from a 3,5-dinitro-2-oxidobenzoate ligand, displaying a distorted octa-hedral coordination geometry. The crystal structure involves C-H⋯O hydrogen bonds between the 2,2'-bipyridine ligands and the carboxyl-ate and NO(2) groups of the 3,...
Hydrogen peroxide (H2O2) can be used as a coreactant to generate reductive-oxidation ECL of Tris(2,2′-bipyridine)ruthenium(II), Ru(bpy)3 (bpy = 2,2′-bipyridine), in pH 7.5 phosphate buffer solution (PBS). Although Ru(bpy)3 is adsorbed and precipitated on the electrode upon reduction of Ru(bpy)3 in aqueous solutions, ECL can still be generated and scanning electrochemical microscopy (SECM) e r o...
In the title compound, [Cd(HCOO)(2)(C(10)H(8)N(2))](n), the Cd(II) ion, located on a position with 2.22 site symmetry, is surrounded by two 4,4'-bipyridine ligands and four formate ligands in a distorted octahedral CdN(2)O(4) coordination. The 4,4'-bipyridine ligands bridge the metal ions, forming one-dimensional chains along different directions, which are further connected by formate ligands ...
The asymmetric unit of the title compound, [Fe(C(12)H(6)O(4))(C(10)H(8)N(2))], consists of two independent Fe(II) atoms, two naphthalene-1,4-dicarboxyl-ate anions and two 4,4'-bipyridine ligands. The Fe(II) atoms are each coordinated by four O atoms of the naphthalene-1,4-dicarboxyl-ate anions and two N atoms of the 4,4'-bipyridine ligands within a distorted octa-hedron. Two Fe(II) atoms are br...
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