Synthesis and structural characterization of diorganotin(IV) esters of salicylidene-amino acids

Synthesis, structural characterization and cytotoxic activity of diorganotin(IV) complexes of N‐(5‐halosalicylidene)tryptophane

“…The six-membered ring is nearly planar with the largest deviation of −0.042(2) Å at N1 from the mean plane. The Sn1-O3-C5-10 and Sn1-N1-C11-C10 torsion angles are 0.5 (4) [16,17] The axial bond angle O1-Sn-O3 [158.33 (6) • ] is consistent with that of the literature structures [16,17] [158.75 (11) • and 108.6(5), 124.9(4), 126.1 (6) • ]. [16,17] This key difference is explained in the following terms.…”

“…The Sn1-O3-C5-10 and Sn1-N1-C11-C10 torsion angles are 0.5 (4) [16,17] The axial bond angle O1-Sn-O3 [158.33 (6) • ] is consistent with that of the literature structures [16,17] [158.75 (11) • and 108.6(5), 124.9(4), 126.1 (6) • ]. [16,17] This key difference is explained in the following terms. In 1, there exists a long Sn1· · · O2 #1 contact of 3.017(2) Å between the Sn1 and the carbonyl O2 (symmetry code #1: −x + 1/2, y + 1/2, −z+ 1/2) of the ligand of a neighboring complex, which is considerably longer than a normal Sn ← O coordination bond ( ∼2.40 Å), [10,11] but much shorter than the sum of the van der Waals radii of these atoms (3.77 Å).…”

Synthesis, characterization and biological activity of diphenyltin(IV) complexes of N‐(3,5‐dibromosalicylidene)‐α‐amino acid and their diphenyltin dichloride adducts

“…10,14 This was further confirmed by the appearance of a sharp band at ∼560 cm −1 assignable to the Sn-O stretching vibration 10,26 . In complexes 1-4, the bands appearing in the range 1635-1677 and 1335-1433 cm −1 were assigned to ν as (CO 2 ) and ν s (CO 2 ), respectively.…”

Amino acetate functionalized Schiff base organotin(IV) complexes as anticancer drugs: synthesis, structural characterization, and in vitro cytotoxicity studies

“…In view of the increasing interest in organotin(IV) carboxylates and prompted by their structural diversity [38] and broad therapeutic activity [27], organotin(IV) complexes of Schiff bases derived from amino acids have also been investigated extensively [39][40][41][42][43][44][45][46][47][48][49]. An overview of the coordination behaviour of such Schiff bases towards organotin(IV) is shown in Scheme 1.…”