558437-41-5Relevant academic research and scientific papers
Easy synthesis of new chiral tetradentate N4 Schiff bases and their use as ligands for metal complexes
Karame, Iyad,Tommasino, M. Lorraine,Faure, Rene,Lemaire, Marc
, p. 1271 - 1276 (2003)
The chiral N4 Schiff bases (1R,2R) -N,N′-bis(2-p-tosylaminobenzylidene)-1,2-diaminocyclohexane (H2CyTs, 1), (1R,2R)-N,N′-bis(2-trifluoromethylsulfonaminobenzylidene)-1, 2-diaminocyclohexane (H2CyTf, 2), (1R,2R) -N,N′-bis(2
Metal complexes with a chiral N4 symmetrical Schiff base. Crystal structures of the ligand and its Cu(II) and Ni(II) mono-helicates
Vazquez, Miguel,Bermejo, Manuel R.,Sanmartin, Jesus,Garcia-Deibe, Ana M.,Lodeiro, Carlos,Mahia, Jose
, p. 870 - 877 (2007/10/03)
The N4 Schiff base ligand N,N′-bis(2-tosylaminobenzylidene)-1,2-diaminocyclohexane (H2cyTs) and its divalent metal (Fe, Co, Ni, Cu, Zn and Cd) complexes have been prepared. Of these compounds only Zn(trans-cyTs)·3H2O can be considered as blue luminescent (λ = 435 nm, φ = 0, 12). Either demetallation or the absence of the tosyl groups, results in a loss of fluorescence. The X-ray crystal structures of a diastereoisomeric mixture of H2cyTs and its (1R,2R)-enantiomer, as well as those corresponding to Cu(trans-cyTs)·MeCN and Ni(trans-cyTs)·MeCN have been solved. The Cu(II) and Ni(II) ions assume tetrahedrally distorted square planar coordination geometries, involving the four donor N-atoms of the dianionic ligand. The spatial disposition of both tosyl groups prevents global consideration as an usual symmetric helicand.
