Synthesis and solid-state spectroscopic investigation of some novel diorganotin(IV) complexes of tetraazamacrocyclic ligands

Syntheses, characterization and biological activity of diorganotin(IV) derivatives of 2-amino-6-hydroxypurine (guanine)

“…The appearance of new bands of medium intensity within the regions 421À432 and 550À557 cm À1 in the studied complexes, which may be assigned to m(SnÀN) and m(SnÀO), respectively, further confirmed the coordination of guanine through the nitrogen (N-9) and oxygen (C(6)@O). The frequencies observed in the complexes 1 and 2 as medium to weak bands in the range 582À600 cm À1 and 504À517 cm À1 have been identified as m as (SnÀC) and m s (SnÀC), respectively, of the CÀSnÀC skeleton whereas for the complex 3, m as (SnÀC) and m s (SnÀC) have been observed at 273 and 221 cm À1 , respectively, and are consistent with the cis-position of the organic groups attached to central tin atom [17,18].…”

New di- and triorganotin(IV) complexes of tripodal Schiff base ligand containing three imidazole arms: Synthesis, structural characterization, anti-inflammatory activity and thermal studies

“…The melting points, carbon, hydrogen and nitrogen analysis, conductivity measurements and IR and far-IR spectra of the synthesized complexes were carried out using the same methods and instruments as reported previously [30]. UV spectra of the ligand and its organotin(IV) complexes were recorded on a Shimadzu 1601 UV-vis spectrophotometer in methanol.…”

Synthesis of N,N′-bis[4-(benzeneazo)salicylaldehyde] 4-methyl-1,2-Phenylenediamine and Its Transition Metal Complexes

“…The ligand H 2 L (3) acts as a tetradentate chelae in complexes ML leading to a square planer stereochemistry. All complexes have also been isolated employing a template route, [16] which is fast and simple. Attempts for isolating single crystal were not successful.…”