2010
Five-membered ring chelate complexes of Ni(II), Pd(II) and Pt(II) derived of di-(2-pyridyl)-N-ethylimine, Noemí Andrade-López*, Tracy A. Hanna, José. G. Alvarado-Rodríguez, Adriana Luqueño-Reyes, Bernat A. Martínez-Ortega, Daniel Mendoza-Espinosa., Polyhedron 2010, 29, 2304-2310. ISSN: 0277-5387. doi:10.1016/j.poly.2010.04.029
Abstract
Cis-diaquobis{di-(2-pyridyl)-N-ethylimine}nickel(II) chloride (2) was obtained from the reaction of di-(2-pyridyl)-N-ethylimine (1) and [NiCl2dppe] [dppe = cis-1,2-bis(diphenylphosphino)ethylene] in a 2:1 ratio in hot acetonitrile. Cis-dichloro{di-(2-pyridyl)-N-ethylimine}palladium(II) (3) and cis-dichloro{di-(2-pyridyl)-N-ethylimine}platinum(II) (4) complexes were obtained from the reaction of MCl2 (M = Pd, Pt) and (1) in equimolar ratio in hot acetonitrile. Compounds 14 were characterized by IR spectroscopy, elemental analysis, and mass spectrometry; the complexes 3 and 4 were characterized in solution by NMR. In addition, solid state structures of compounds 14 were determined using single crystal X-ray diffraction analyses. X-ray diffraction data of the complexes 3 and 4 showed a distorted square planar local geometry at palladium and platinum atoms with the chlorine atoms in a cis-coordination; in 2 a local octahedral geometry at nickel atom was observed. Complexes 3 and 4 are arranged as dimers with a M?M distance of 3.4567(4) Å (M = Pd) and 3.4221(4) Å (M = Pt), respectively; 2 consists of units linked by intermolecular hydrogen bonding.
Conformational studies on indole alkaloids from Flustra foliacea by NMR and molecular modeling
Total Syntheses of Five Indole Alkaloids from the Marine Bryozoan Flustra foliacea
Trapping enols of esters and lactones with diazomethane
Regioselective Synthesis of 3-Indolyl(alkoxy)acetates
Transesterifications mediated by t-BuNH2
Absolute configuration determination of 2-(2-oxo-3-indolyl)acetamide derivatives