Syntheses and crystal structures of diorganotin (IV) moieties with 3-hydroxy-2-pyridinecarboxylic acid

Organotin Carboxylates based on 3‐(1,3‐Dioxo‐2,3‐dihydro‐1H‐phenalen‐2‐yl)benzoic Acid and the Influence of Solvent on the Molecular Structure

“…The strong absorption bands appearing at 1586 and 1433 cm –1 are assigned to the asymmetric and symmetric vibrations of the COO moiety respectively. The Δν (ν as COO – ν s COO) value for complex 1 is 153 cm –1 smaller than 200 cm –1 , standing for the bidentate chelate coordination of the carboxylate group . The coordination modes proved by IR spectrum is totally consistent with the X‐ray structure.…”

Cadmium and tin complexes of Schiff-base ligands

“…In addition, the 2,4-, 3,4-, and 3,5-pyridine dicarboxylates react with organotin chlorides giving oligomeric structures with distorted TBP geometries [103]. Some organotin complexes derived from picolinic acid possess octahedral or five-coordinate TBP structures, where the carboxylate is monodentate [104,105]. Seven-coordinate tin complexes exhibit higher activity toward some cancer cell lines, when 2,6-pyridine carboxylate is part of the molecule [106].…”

Penta- and heptacoordinated tin(IV) compounds derived from pyridine Schiff bases and 2-pyridine carboxylate: Synthesis and structural characterization

“…In addition, the 2,4-, 3,4-and 3,5-pyridine dicarboxylates react with organotinchlorides giving oligomeric structures with distorted TBP geometries [42]. Some organotin complexes derived from picolinic acid possess octahedral or five-coordinated trigonal bipyramidal structures where the carboxylate acts as a monodentated ligand [43,44]. It has been reported that seven coordinated tin complexes exhibit higher activity towards some cancer cell lines when the 2,6-pyridine carboxylate moiety is part of the molecule [45].…”