Macrocyclic ligand ring size effects. Part 1. Complexation of tetra-aza ligands containing fused dibenzo substituents with Zn II and Cd II : a solution stability, X-ray crystal structure, and molecular mechanics study
作者:Kenneth R. Adam、Brian J. McCool、Anthony J. Leong、Leonard F. Lindoy、Christopher W. G. Ansell、Philip J. Baillie、Keith P. Dancey、Laurel A. Drummond、Kim Henrick、Mary McPartlin、Dalgit K. Uppal、Peter A. Tasker
DOI:10.1039/dt9900003435
日期:——
The interaction of ZnII and CdII with an extensive series of dibenzo-substitutedmacrocyclic and open-chaintetra-amines has been investigated. All ligands form 1 : 1 (metal : ligand) complexes in solution with these metal ions; the thermodynamic stabilities of the complexes in 95% methanol (I= 0.1 mol dm–3, NEt4ClO4) have been determined. Along one series of 14- to 16-membered macrocyclic systems
HENRICK, K.;JUDD, P. M.;OWSTON, P. G.;PETERS, R.;TASKER, P. A.;TURNER, R.+, J. CHEM. SOC., CHEM. COMMUN., 1983, N 21, 1253-1254
作者:HENRICK, K.、JUDD, P. M.、OWSTON, P. G.、PETERS, R.、TASKER, P. A.、TURNER, R.+
DOI:——
日期:——
Non-template synthesis of ‘N<sub>4</sub>’ macrocyclic imine ligands with variable ring sizes: the importance of intramolecular hydrogen-bonding. X-Ray crystal structures of three macrocyclic and two open-chain ligands
作者:Philip G. Owston、Roger Peters、Edward Ramsammy、Peter A. Tasker、Jill Trotter
DOI:10.1039/c39800001218
日期:——
Di-imine tetra-aza macrocycles with an extensive range of ringsizes can be isolated by simple condensations without recourse to ‘metal-ion template’ or ‘high-dilution’ reactions, provided the rings can form intramolecular hydrogen bonds to reduce unfavourable lone-pair–lone-pair interactions between the nitrogen atoms.
Stereoselective C-alkylation of di-imine macrocycles: a versatile route to a series of meso-dialkyl-substituted macrocyclic tetramines
作者:Kim Henrick、Patricia M. Judd、Philip G. Owston、Roger Peters、Peter A. Tasker、Ralph W. Turner
DOI:10.1039/c39830001253
日期:——
Macrocycles containing two o-iminoanilino units undergo stereoselectiveC-alkylation on treatment with Grignard reagents or lithium alkyls to give the meso-dialkyl-substitutedmacrocyclic tetra-amines.