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Photoreaction of adsorbed diiodomethane: halide effects of a series of neutral palladium(ii) coordination cages.
Dalton Trans
June 2016
Department of Chemistry, Pusan National University, Pusan 46241, Korea.
A series of Pd6L4-type neutral coordination cages, [Pd6X12L4] (X(-) = Cl(-) and Br(-)), are constructed via self-assembly of (COD)PdCl2 and K2PdBr4 with C3-symmetric N,N',N''-tris(2-pyridinylmethyl)-1,3,5-benzenetricarboxamide (L), respectively. The iodide analogue [Pd6I12L4] is smoothly synthesized from [Pd6Br12L4] in the presence of CH2I2 under mild conditions. The replacement of bromide to iodide in the nanocage system represents a landmark achievement in synthetic-methodology development.
View Article and Find Full Text PDFChiral multidentate oxazoline ligands based on cyclophosphazene cores: synthesis, characterization and complexation studies.
Dalton Trans
October 2014
Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India.
Chiral oxazoline based bi and hexadentate ligands built on cyclophosphazene cores have been synthesized and characterized. (NPPh2)2[NP(m-OC6H4C(O)OCH3)2] (1) was prepared by the reaction of gem-(NPPh2)2(NPCl2) with methyl-3-hydroxy benzoate in the presence of Cs2CO3. Compound 1 was converted to the dicarboxylic acid (NPPh2)2[NP(m-OC6H4C(O)OH)2] (2) by base promoted hydrolysis with KO(t-Bu).
View Article and Find Full Text PDFSynthesis of triangular tripalladium cations as noble-metal analogues of the cyclopropenyl cation.
Angew Chem Int Ed Engl
February 2014
UPMC Sorbonne Universités, IPCM (UMR CNRS 7201), 4 place Jussieu, C. 229, 75005 Paris (France).
The first C3 -symmetric 44-core-valence-electron triangular palladium clusters, [{(SAr')(PAr3 )Pd}3 ](+) , have been synthesized by activation of the CS bond of isothioureas. Owing to delocalized metal-metal bonding, these stable complexes are the first noble-metal analogues of the π-aromatic cyclopropenyl cation [C3 H3 ](+) , with their all-metal aromaticity involving d-type atomic orbitals.
View Article and Find Full Text PDFTetrathiafulvalene-1,3,5-triazines as (multi)donor-acceptor systems with tunable charge transfer: structural, photophysical, and theoretical investigations.
Inorg Chem
May 2013
LUNAM Université, Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH Anjou, 2 bd Lavoisier, 49045 Angers Cedex, France.
Article Synopsis
- The study explores palladium-catalyzed reactions that create novel compounds by linking chlorinated 1,3,5-triazines with tetrathiafulvalene derivatives, resulting in unique donor-acceptor structures characterized by intramolecular charge transfer.
- The crystal structures of these compounds demonstrate strong planar formations due to effective conjugation, which significantly impacts their electronic properties.
- Electrochemical and photophysical analyses reveal that the compounds exhibit fluorescence linked to charge transfer processes, while also showing oxidation effects leading to radical cation formation, with specific observations made in a crystalline radical cation salt.
Synthesis, structure, fullerene-binding and resolution of C3-symmetric cavitands with rigid and deep cavities.
Org Biomol Chem
February 2012
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
An efficient palladium-catalyzed Suzuki-Miyaura coupling method involving the reaction between CTV-Br(3) and a variety of aryl and heteroaryl boronic acids in the presence of indolyl phosphane ligands has been developed. This reaction procedure provided a series of C(3)-symmetric aryl-extended rigid cavitands for the first time. X-ray crystal structure analysis revealed that the phenyl substituted cavitand 5a has much larger rim edges and cavity height.
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