نتایج جستجو برای: donor atoms

تعداد نتایج: 125519  

2014
Joshua A. Goodner Brandon J. Powers Douglas R. Powell Lei Yang

The title compound, [Zn2(C21H25N2)2(OH)2], is a binuclear zinc complex formed by two bidentate β-diketiminate (nacnac) ligands and two μ-hydroxide O atoms, bridging two mononuclear units into a centrosymmetric dimeric unit. Each Zn(2+) cation is coordinated by two N-donor atoms from the nacnac ligand and two O-donor atoms of hydroxide anions to give a distorted tetra-hedral coordination environ...

2016
Samantha J. Bullock Lindsay P. Harding Michelle P. Moore Andrew Mills Sean A. F. Piela Craig R. Rice Martina Whitehead

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2017
Ettore Fazio Javier Jaramillo-García María Medel Maxence Urbani Michael Grätzel Mohammad K Nazeerudin Gema de la Torre Tomas Torres

Unique donor-π-acceptor phthalocyanines have been synthesized through the asymmetric functionalization of an ABAB phthalocyanine, crosswise functionalized with two iodine atoms through Pd-catalyzed cross-coupling reactions with adequate electron-donor and electron-acceptor moieties. These push-pull molecules have been optically and electrochemically characterized, and their ability to perform a...

Journal: :Dalton transactions 2013
Samantha J Bullock Lindsay P Harding Michelle P Moore Andrew Mills Sean A F Piela Craig R Rice Liz Towns-Andrews Martina Whitehead

A series of ligands that contain both N-donor and N-oxide donor atoms have been synthesised and ligands L5, L6, L7 and L8 contain, 4, 6, 5, and 6 donor atoms respectively. The smallest ligand L5 forms a mononuclear complex with Cu2+ ([Cu(L5)(ClO4)2(MeCN)]) whereas L6 and L7 form dinuclear double helicates with Ni2+ and Cu2+ respectively ([Ni2(L6)2]4+ and [Cu2(L7)2]4+). L8 forms a tetranuclear c...

2013
Roberto Centore Antonio Carella

In the title compound, C10H4N2O6·2H2O, the organic mol-ecule has crystallographically imposed inversion symmetry. The atoms of the three fused rings of the mol-ecule are coplanar within 0.0246 (8) Å, while the two hy-droxy O atoms are displaced from the mean plane of the mol-ecule by 0.127 (1) Å. In the crystal, infinite near-planar layers of close-packed mol-ecules are formed by hydrogen bondi...

2011
Yan-Wei Ding Xiao-Ling Wang Li-Li Ni

In the title complex, [ZnBr(2)(C(13)H(19)N(3)O)], the Zn(II) atom is five-coordinated by the three N-donor atoms of the Schiff base ligand and by two Br atoms in a distorted square-pyramidal geometry. The morpholine ring adopts a chair conformation.

Journal: :Nanoscale 2021

First eight-electron, Pt–Ag superatoms protected by Se-donor ligands are synthesized ligand replacement reaction. The metal framework of PtAg 20 changes from low symmetry ( C 2 ) to high T h via rearrangement five capping silver atoms.

2007
Dimiter Alexandrov Scott Butcher Nikolaus Dietz Hang Yu

The electron state structure of isolated interstitial O atoms in real InN (containing clusters of InN, clusters of InON and clusters of non-stoichiometric InN:In) is the subject of investigation in this paper. It is shown that for the interstitial O atoms the corresponding symmetry is equivalent to that of an O atom in vacuum if the dielectric permittivity of InN is considered, and therefore th...

2014
Sabrina Benmebarek Mhamed Boudraa Sofiane Bouacida Hocine Merazig George Dénès

In the title compound, [ZnCl2(C6H8N2O2S)2], the Zn(II) ion lies on a twofold rotation axis and has a slightly distorted tetra-hedral coordination geometry, involving two Cl atoms and two N atoms from the amino groups attached directly to the benzene rings [Zn-Cl = 2.2288 (16) Å and Zn-N = 2.060 (5) Å]. The dihedral angle between the benzene rings is 67.1 (3)°. The crystal packing can be describ...

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