نتایج جستجو برای: coordination solvent

تعداد نتایج: 132304  

Journal: :Chemical communications 2013
Baojian Liu Antek G Wong-Foy Adam J Matzger

Flowing supercritical CO(2) was used to activate a cross section of microporous coordination polymers (MCPs) directly from DMF, thus avoiding exchange with a volatile solvent. Most MCPs displayed exceptional surface areas directly after treatment although those with coordinatively unsaturated metals benefit from heating. The method presents an advance in efficiency of activation and quality of ...

Journal: :Chemical communications 2013
Jesús R Berenguer Elena Lalinde Antonio Martín M Teresa Moreno Santiago Ruiz Sergio Sánchez Hamid R Shahsavari

We report a novel cluster, [{Pt(C6F5)(bzq)}2Pb(Spy)2] 1, that displays reversible vapoluminescence to specific organic vapours; this behaviour can be related to the stereochemical activity of the lone pair around the Pb(II) in the ground state and to the distinct distortion of the coordination environment (1 and 1-solvent) upon photoexcitation.

Journal: :Chemical communications 2009
Feng Gao Huan Pang Shuoping Xu Qingyi Lu

Porous Cu/C composites and CuO nanostructures can be easily synthesized from coordination precursors between Cu(2+) and glycine, which are obtained simply by adding ethanol as a poor solvent into a Cu(2+) and glycine solution, and verified to be potential antibacterial agents and photocatalysts.

2012
Hezron Ogutu Reinout Meijboom

The title compound, [Rh(C(5)H(7)O(2))(C(30)H(21)P)(CO)]·0.5C(3)H(6)O, has two different complex molecules in the asymmetric unit, with the Rh(I) atoms in slightly distorted square-planar coordination environments. The molecules are packed as two monomeric mol-ecules with one acetone solvent mol-ecule sitting at the centre.

Journal: :Chemical communications 2009
Mårten Ahlquist Roy A Periana William A Goddard

Quantum mechanical (QM) results are used to establish the role of sulfuric acid solvent in facilitating the reaction between Pt(II)(bpym)Cl(2) (bpym = 2,2'-bipyrimidinyl) and methane; coordination of methane to the platinum catalyst is found to be catalyzed by the acidic medium.

Journal: :Dalton transactions 2013
Wen-Bin Sun Bing-Lu Han Po-Heng Lin Hong-Feng Li Peng Chen Yong-Mei Tian Muralee Murugesu Peng-Fei Yan

Three dinuclear [Ln2H2OL(1)2(acac)2]·solvent (1, Ln = Gd, solvent = 2CH2Cl2; 2, Ln = Tb, no solvent; 3, Ln = Er, solvent = (C2H5)2O), and two tetranuclear lanthanide clusters [Ln4(μ3-OH)2L(2)2(acac)6]·2(solvent) (4, Ln = Tb, solvent = CH3OH; 5, Ln = Dy, solvent = CH3CN) were characterized in terms of structure, fluorescence and magnetism. The dinuclear lanthanide complexes were constructed by a...

2017
Rita Egekenze Yilma Gultneh Ray J Butcher

In the title compound, [Mn3(C14H12ClN2O)3(CH3O)3O]ClO4·1.1CH2Cl2·0.9C4H10O, the cation consists of a central Mn3O core with μ2-methano-late bridging between adjacent MnIII atoms, thus giving each MnIII atom a mer-O3 coordination environment. Six-coordination for each MnIII atom is provided by the deprotonated Schiff base ligand (E)-4-chloro-2-({[2-(pyridin-2-yl)eth-yl]imino}-meth-yl)phenolate. ...

Journal: :Science 2003
Lydia A Finney Thomas V O'Halloran

The essential transition metal ions are avidly accumulated by cells, yet they have two faces: They are put to use as required cofactors, but they also can catalyze cytotoxic reactions. Several families of proteins are emerging that control the activity of intracellular metal ions and help confine them to vital roles. These include integral transmembrane transporters, metalloregulatory sensors, ...

2004
Jaroslav V. Burda Matěj Pavelka Milan Šimánek

Hydration study of both Cu and Cu cations in variable water environment was performed using the DFT method. After optimization using B3PW91 functional, stabilization energies with and without ligand repulsion were calculated using B3LYP functional. It was found that optimal Cu coordination involves two directly bonded solvent molecules while Cu cation prefers 4 (or 5) coordinated waters in the ...

Journal: :Chemical communications 2012
Simone G Weber David Zahner Frank Rominger Bernd F Straub

A sterically shielded cationic NHC gold complex IPr**Au-BArF(24) without solvent coordination has been prepared in situ in CH(2)Cl(2). The monovalent transition metal electrophile, a "soft proton", heterolytically activates the C-B bond of the weakly coordinating counterion tetrakis[3,5-bis(trifluoromethyl)phenyl]borate at room temperature.

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