Synthesis, electrolytic behaviour and antimicrobial activities of cadmium complexes of isomers of 3,10-C- meso -3,5,7,7,10,12,14,14-octamethyl-1,4,8,11-tetraazacyclotetradecane

Synthesis, characterization and antimicrobial studies of cadmium(II) complexes with a tetraazamacrocycle ( $$\hbox {L}_{\mathrm{B}}$$ L B ) and its cyanoethyl N-pendent derivative $$(\hbox {L}_{\mathrm{BX}}$$ ( L BX )

“…The stereochemistry of the ligands of these complexes have been assigned on the basis that axial addition and substitution takes place without change of configuration and conformation of the ligand of the original complexes. 6,9,18 3.1 Ligands L, L A , L B and L C Condensation of 1,2-diaminopropane with acetone in presence of quantitative amount of HClO 4 resulted a macrocyclic diene ligand, 3,10-C-meso-Me 8 [14]diene 16 which on reduction produced three C-chiral isomer ligand designated by L A , L B and L C (Scheme 1). 17 L B on alkylation reaction with vinyl cyanide yielded bis cyanoethyl-N-pendent derivative L BX (Scheme 1).…”

“…As this complex is found to be insoluble in other solvents like CH 3 Cl, CH 3 CN and H 2 O, so molar conductivity of the complex in these solvents could not be measured. Since the axial substitution and addition takes place without change of conformation and configuration 6,9,18 DMSO solution of this complex shows the nonelectrolytic nature which demonstrates solvent DMSO forces anions to go inside the coordination sphere indicated by the following equation.…”

“…In this connection, a number of studies are reported on the syntheses, characterization and biological activity of copper(II), cobalt(III), zinc(II), nickel(II) and cadmium(II) complexes of different macrocyclic ligands as well as their N-pendent derivatives in the literature. [5][6][7][8][9] Some complexes of the isomeric ligand, L B 7,9 of 3,10-C-meso-Me 8 [14]ane and its N-pendentderivatives [10][11][12] have been reported in which structure of the N-pendent ligand L BX (Bis cyanoethyl derivative of L B ) has been studied by X-ray crystallography. 13 Though work on cadmium(II) complexes with different macrocycles are notable 9,14,15 complexes but with N-pendent ligands are rare.…”

“…[5][6][7][8][9] Some complexes of the isomeric ligand, L B 7,9 of 3,10-C-meso-Me 8 [14]ane and its N-pendentderivatives [10][11][12] have been reported in which structure of the N-pendent ligand L BX (Bis cyanoethyl derivative of L B ) has been studied by X-ray crystallography. 13 Though work on cadmium(II) complexes with different macrocycles are notable 9,14,15 complexes but with N-pendent ligands are rare. So it is interesting to synthesize and characterize new cadmium(II) complexes of an isomeric ligand L B and its N-pendent derivative, L BX .…”

Synthesis, Characterization And Electrolytic Behavior Of Cadmium(II) Complexes Of 5,7,7,12,14,14- Hexamethyl-1,4,8,11-Tetraazacyclotetradeca-4,11- Diene And Isomers Of Its Saturated Analogue

“…In another study, Roy and coworkers (Roy, et al, 2007) prepared octahedral cis-and trans-cadmium(II) complexes with ligand, 3,10-C-mesoMe 8 [14]ane. The structure of compound cis- [CdL c (NO 3 )](NO 3 ) (where L c is one isomeric ligand of Me 8 [14]ane) has been confirmed by X-ray crystallography .…”