Preparation, Structure and Biological Activities of Mixed Methyldicyclohexyltin Carboxylates

Abstract

The mixed trialkyltin derivatives, obtained by introducing different alkyls on tin atom, have provoked more interests for their multi-bioactivities. And it has become an important branch of organotin chemistry. A series of novel mixed methyldicyclohexyltin carboxylates were synthesized and characterized through IR, 'H, 119 Sn, 13 C NMR and MS. The results showed that the structures of the compounds are dependent on the steric and electronic effects of the carbonyl group. The preliminary pesticidal tests show that all the compounds have excellent acaricidal activity and many of them also exhibit good insecticidal, fungicidal and herbicidal activities. The biological activities are mainly determined by the methyl and cyclohexyl on tin atom and has close relations with the anion group.

Synthesis, spectroscopic characterization, and in vitro biological activity of organotin(IV) complexes of (E)‐3‐(4‐methoxyphenyl)‐2‐phenyl‐2‐propenoic acid

“…The structures of these compounds have been investigated by infrared, multinuclear NMR ( 1 H, 13 C, 119 Sn), Mössbauer spectroscopies, and mass spectrometry. Biological testing has been performed against various bacteria and fungi.…”

Synthesis and Characterization of New Lead(II) and Organotin(IV) Complexes of Schiff Bases Derived from Histidine and Methionine

“…This band disappears on complexation, suggesting the chelation of the oxygen to the metal atoms. The ν(COO) asym and ν(COO) sym stretching vibrations characteristic of the coordinated carboxylate anions were indicated as strong intensity bands near 1600 and 1330 cm −1 , respectively [22]. The observed large separation between ν asym (COO) and ν sym (COO) stretching vibrations [Δν = ν asym (COO) −ν sym (COO) ∼ 270 cm −1 ] for carboxylate group show the bidentate nature of ligands in the complexes.…”

Synthesis, spectroscopic exploration, biocidal activities, and crystal structures of 3‐(3‐fluorophenyl)‐2‐phenylpropenoic acid and trimethyltin(IV) complex

“…The bands attributed to asym (COO) and sym (COO) usually shift their positions rather significantly to lower and upper frequency region, respectively upon coordination to a metal and decrease the value of . It may be due to conversion of the structure of complex from four-to five-coordinated symmetry [8,9]. In this case, value of for trimethyltin(IV) derivative is within the range of silver salt of the ligand acid.…”

“…Similarly, the C Sn O angles lie in the range 82.40(12) to 99.65 (12) • and O(1) Sn (1) O (2) angle is 166.83 (8) • . All these evidences might suggest description of the tin environment as a trigonal bipyramid with O(1) and O(2) in the apical positions and the three methyl groups in the equatorial positions.…”