Synthesis and crystal structure of di-n-butylbis(2-amino-5-chlorobenzoato)tin(IV)

Organotin(IV) triazolates: Synthesis and their spectral characterization

“…In the studied diorganotin(IV) bis(triazolate) the I.S. value are observed in the range 1.03-1.21 mm s À1 and the angle \C-Sn-C lies in the range 121.91-124.84° (Table 2), which are close to the average of the two extremes, in which the organic substituents do not adopt either cis-or trans-geometry about the tin center [41]. Therefore, the observed 119 Sn Mössbauer parameters of the studied diorganotin(IV) bis(triazolate) are best interpreted in terms of a highly distorted skew trapezoidal-bipyramidal geometry in which equatorial positions are occupied by two sulfur and two N(4) atoms, whereas the two organic groups occupy the axial positions (Fig.…”

“…Indeed, where the other ligands have higher electronegativity, the Q.S. is Table 1 IR spectral bands a of 3-amino-5-mercapto-1,2,4-triazole and its organotin(IV) compounds HL Me 2 SnL (1) n-Bu 2 SnL 2 (2) Oct 2 SnL 2 (3) Ph 2 SnL 2 (4) Me 3 SnL (5) n-Pr 3 SnL (6) n-Bu 3 SnL (7) Assignments 3382s 3330brs 3456brw 3439w 3430wsh 3419m 3386mbr 3425m 3299m 3144w 3330brw 3382w 3384wsh 3375m 3300mbr 3317m 3267m 2852w 3213w 3213w 3013w 3301m 3170mbr 3230w 3216m 2787vw 2869s 3182w 2952w 3213w 2866s 3182w 3170m 2857s 3095w 2923m 3104m mainly governed by C-Sn-C bond angle [40], and the distortion from regular six coordination can give values similar to those reported [41] for highly distorted square bipyramidal/skew trapezoidal-bipyramidal structure. Further, it has been reported [42] that I.S.…”

Synthesis and structural characterizations of diorganotin(IV) complexes with 2-pyrazinecarboxylic acid

“…For complexes 1, 3, 5 and 7 the values of Dm are between 210 and 300 cm À1 and this strongly indicates that these complexes adopt the monodentate carboxylate structure. In complexes 2, 4, 6 and 8, the magnitudes of Dm 1 [m as (CO 2 ) 1 -m s (CO 2 ) 1 ] and Dm 2 [m as (CO 2 ) 2 -m s (CO 2 ) 2 ] are 254-299 and 174-188 cm À1 which indicate the presence of Table 1 Crystal data collection and structure refinement parameters for complexes 1 and 2 11.942 (6) 12.123(4) b (Å ) 21.513 (10) 18.819(6) c (Å ) 21.520 (10) 26.004 (8) …”

“…Our current interest focuses on how the hetero-atoms (N, O or S) of the carboxylic acids influence the coordination mode and further help the self-assemble of these molecules [9][10][11]. Based on the above considerations, we have investigated a series of reactions of diorganotin oxide with 2-pyrazinecarboxylic acid.…”

Synthesis and characterization of the first diorganotin(IV) complexes containing mixed arylazobenzoic acids and having skew trapezoidal bipyramidal geometry

“…Some members of this class of compounds exhibit catalytic activity on trans-esterification, potentially in polymerization [1,2]. Owing to these applications, the structure and mechanisms of action of these diorganotin dicarboxylates remain a matter of great interest [2][3][4][5]. In the dominant motif for [(R 2 Sn(O 2 CR 0 ) 2 ] compounds, the carboxylate ligands chelate the tin atom forming disparate Sn-O bonds distances; the short Sn-O bond distances range from 2.07 to 2.16 Å and the long Sn-O distances range from 2.47 to 2.65 Å [6,7].…”