نتایج جستجو برای: 44 bipyridine

تعداد نتایج: 98203  

Journal: :Angewandte Chemie 2021

The highly unfavorable thermodynamics of direct aluminum hydrogenation can be overcome by stabilizing alane within a nanoporous bipyridine-functionalized covalent triazine framework (AlH3@CTF-bipyridine). This material and the counterpart AlH3@CTF-biphenyl rapidly desorb H2 between 95 154 °C, with desorption complete at 250 °C. Sieverts measurements, 27Al MAS NMR 27Al{1H} REDOR experiments, com...

2011
Sheng-Bo Liu Chao Xu Taike Duan Qun Chen Qian-Feng Zhang

In the title compound, 3C(10)H(8)N(2)·4C(7)H(5)NO(4), the asymmetric unit contains two mol-ecules of pyridine-3,5-dicarb-oxy-lic acid and one mol-ecule of 4,4'-bipyridine in general positions together with one mol-ecule of 4,4'-bipyridine lying across a centre of inversion, thus giving a 4:3 molar ratio of pyridine-3,5-dicarb-oxy-lic acid to 4,4'-bipyridine. The dihedral angle between the bipyr...

2015
Pau Farras Helen Waller Andrew C. Benniston

The complex [Ru(bpy)2L] , where bpy = 2,2’-bipyridine, L = 4-(phenylethynyl)-2,2’-bipyridine, was prepared in its racemic and resolved forms (and . The phenylethynyl unit on the bipyridine for the complex acts as a binding site for -cyclodextrin in water (1:1 complex, K = 3390 M) or -cyclodextrin (2:1 complex, K1 = 887 M , K2 = 8070 M ). The presence of the cyclodextrin provides partial p...

2011
Fredrik Lundvall David Stephen Wragg Mats Tilset

In the title compound, [Pt(CH(3))(3)I(C(12)H(12)N(2))], the Pt(IV) atom is six-coordinated in a slightly distorted octa-hedral configuration with one CH(3) group and the I atom forming a near perpendicular axis relative to the square plane formed by the bipyridine ligand and the two remaining CH(3) groups. The CH(3) group trans to the I atom has a slightly elongated bond to Pt compared to the o...

2012
Shyam K. Singh Lindsay A. Summers

There has been considerable interest in the pro­ ducts of the reaction of 2 ,2 '-bipyridine with di­ bromoalkanes. The bridged diquaternary salt (1) from 2 ,2 '-bipyridine and 1 ,2 -dibromoethane is the well-known herbicide diquat dibromide [1]. Similar bridged salts are obtained with 1,3-dibromopropane and 1,4-dibromobutane [2] but reaction of 2,2'-bipyridine with 1,5-dibromopentane gives inst...

2010
Shih-Chen Hsu Sheng-Han Lo Ching-Che Kao Chia-Her Lin

The crystal structure of the title complex, [Ni(C(7)H(4)NO(4))(2)(C(10)H(8)N(2))(2)](n), exhibits a two-dimensional network, which is built up from slightly distorted NiN(4)O(2) polyhedra (2 symmetry), bipyridine ligands, and carboxyl-ate anions. The Ni(II) atoms are six-coordinated by two O atoms of two monodentate carboxyl-ate anions and four N atoms from bipyridine ligands and are connected ...

2009
Jerzy B. Chlistunoff Allen J. Bard

Inorganic Chemistry is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Electrochemistry in liquid sulfur dioxide. 12. Electrochemical and pulse radiolysis studies on oxidation of tris(2,2'-bipyridine)zinc(2+), tris(2,2'-bipyridine)cadmium(2+) and 2,2'-bipyridine Jerzy B. Chlistunoff, and Allen J. Bard Inorg. Chem., 1993, 32 (16), 3521-3527 • DOI: 10....

Journal: :Inorganic chemistry 2006
Raphael M Franzini Richard M Watson Goutam K Patra Robert M Breece David L Tierney Michael P Hendrich Catalina Achim

Substitution of natural nucleobases in PNA oligomers with ligands is a strategy for directing metal ion incorporation to specific locations within a PNA duplex. In this study, we have synthesized PNA oligomers that contain up to three adjacent bipyridine ligands and examined the interaction with Ni2+ and Cu2+ of these oligomers and of duplexes formed from them. Variable-temperature UV spectrosc...

Journal: :Dalton transactions 2013
Zhiqiang Ye Bo Song Yuejiao Yin Run Zhang Jingli Yuan

By using an anthryl-substituted 2,2'-bipyridine as a singlet oxygen-reactive ligand, a new class of Ru(II)-bipyridine complex derivatives that can specifically respond to singlet oxygen with remarkable phosphorescence enhancements have been successfully developed.

2014
Delphine Riou Guy Bouchoux

Quantum chemical composite methods G3MP2B3, G3B3, G4MP2 and G4 have been used to calculate enthalpies of formation and gas phase basicities of the title compounds. Comparison of the results with the available experimental heats of formation values reveals correct agreement (to within ≈ 2 kJ/mol) with G3B3 and G4 methods. Systematic errors on the heats of formation of these aromatic molecules ar...

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