Synthesis and characterization of organotin(IV) semicarbazones: potential precursors for nanosized tin oxide

Abstract

A series of organotin(IV) semicarbazone adducts of the type R 2 SnCl 2 ÁnLH (1-6) were synthesized by the reactions of R 2 SnCl 2 with newly synthesized carvone semicarbazone (LH) in anhydrous ethanol [where R = CH 3 , n = 1 (1), 2 (2); R = C 4 H 9 , n = 1 (3), 2 (4); and R = C 6 H 5 , n = 1 (5), 2 (6)]. All the compounds have been characterized by elemental analyses, FT-IR, NMR ( 1 H, 13 C, 119 Sn) and FAB mass spectral studies. 119 Sn NMR studies suggest monodentate mode of attachment of the ligand with central tin atom in the solution state. Thermogravimetric study of (6) shows large thermal events. Transformations of (4) and (6) to pure tin oxides (i and ii, respectively) have been carried out using sol-gel technique. Powder XRD patterns of the formed tin oxides indicate the formation of tetragonal cassiterite structure. SEM images of (i) and (ii) show wire-and grain-like morphologies of the crystallites, respectively.Graphical Abstract A series of organotin(IV) semicarbazone adducts were synthesized by the reactions of diorganotin dichloride with newly synthesized carvone semicarbazone. Transformations of some of the newly synthesized adducts to pure tin oxides have been carried out using sol-gel technique. Powder XRD patterns of the formed tin oxides indicate the formation of tetragonal cassiterite structure, while SEM images show wire-and grain-like morphologies.

New di-n-butyltin(iv)-bis-(1-alkoxy-isoquinoline-4-nitrile thiolate): crystallographic and computational studies

“…thiosemicarbazones, 7 a semicarbazones, 7 b , c and dithiocarbazates, 7 d , e and their metal complexes are also being investigated by inorganic chemists and crystal engineers as they can yield interesting tuned supramolecular frameworks. 7,8 By choosing apt designing strategies, these systems could be explored as interesting supramolecular assemblies to achieve desirable properties. 8…”

“…7,8 By choosing apt designing strategies, these systems could be explored as interesting supramolecular assemblies to achieve desirable properties. 8…”

“…Amongst a plethora of sulfur-based coordination complexes, the chemistry of compounds bearing Sn–S bonding had drawn immense attention because such class of compounds display interesting properties and supramolecular architectures. 1–8 Also, complexes comprising Sn–S, the Sn–N, Sn–O bonds display several advantages over other main group compounds. 6–15 This is because of the inherent Lewis acidity of Sn( iv ) which forms stable bonds with these heteroatoms.…”

“…1–8 Also, complexes comprising Sn–S, the Sn–N, Sn–O bonds display several advantages over other main group compounds. 6–15 This is because of the inherent Lewis acidity of Sn( iv ) which forms stable bonds with these heteroatoms. 6–15 In addition to supramolecular assemblies, such class of compounds finds application in the fields of medicine and pharmacology, which is due to the distinct stereogenic property of the Sn( iv ) center which could be attuned by introducing modifications in ligand structure.…”

Supramolecular homobimetallic bis-diorganotin(IV) complexes of ditopic oxygen nitrogen donor ligand: synthesis, spectroscopic characterization, crystal structure and biological screening

“…Organotin(IV) compounds have been recognized for their therapeutic potential in biocompatible strategy for cancer treatment [1], antimicrobial activities [2], photocatalytic applications [3] as precursors for tin oxide in gas sensors [4,5], manufacture of organic light emitting diodes [6] and ability to generate well-organized supramolecular architecture through strong metal ligand coordinate bonds and weak cooperative forces like hydrogen bonds and π-π interactions [7][8][9][10]. Through careful synthesis control, metal or ligand directed self-assembly can be consciously designed into a synthetic framework with interesting properties and useful applications in various fields like molecular recognition, chiroptical switching devices and gas storage materials.…”