Molecular structures and supramolecular association of chlorodiorganotin(IV) complexes with bis- and tris-dithiocarbamate ligand

A Structural Survey of Poly-Functional Dithiocarbamate Ligands and the Aggregation Patterns They Sustain

“…Such perplexing coordination flexibility has been long recognised [91], especially as mono-nuclear diphenyltin bis(dithiocarbamate) molecules which are known to adopt both skew-trapezoidal bipyramidal and octahedral geometries in a ratio of 1:2, and therefore, the study of their structural characteristics continues to attract attention [92]. Despite having a different general formula to the preceding class of compounds, molecules of composition (R2SnX)2(S2CN-spacer-NCS2) adopt very similar structural motifs in their crystals: (Me2SnCl)2(L 1 ) in the crystal of 67 [68] Figure 16b, and 72 are generated by 2-fold symmetry, whereas compounds 69, 70, and 73, as shown in Figure 16c, and 76 are disposed about a centre of inversion; molecules related to 73 attract interest as sensors for anions [71]. In each of 77, as shown in Figure 16d, and 78, where the tin-bound R groups are disparate and one pair of tin-bound R groups is connected, the molecules lack symmetry.…”

“…The common features of the structures are an asymmetric mode of coordination of the dithiocarbamate residues and the presence of five-coordinate R2S2X-donor sets that are highly distorted from the ideal trigonal-bipyramidal and square-pyramidal extremes. However, owing to the presence of tin-bound electronegative X substituents in the mo- Despite having a different general formula to the preceding class of compounds, molecules of composition (R 2 SnX) 2 (S 2 CN-spacer-NCS 2 ) adopt very similar structural motifs in their crystals: (Me 2 SnCl) 2 (L 1 ) in the crystal of 67 [68] [73], and [PhSn(X)CH 2 Si(Me) 2 C 6 H 4 C 6 H 4 Si(Me) 2 CH 2 Sn(Ph)X](L 2 ) for X = Cl (77) and X = I (78) [74]. However, by contrast to the (R 2 Sn) 2 (S 2 CNspacer-NCS 2 ) 2 molecules in crystals 51-66, there is a significant diversity of symmetry in the 12 di-nuclear (R 2 SnX) 2 (S 2 CN-spacer-NCS 2 ) compounds: four have no crystallographically imposed symmetry, that is, 67, Figure 16a, 71, 74, and 75.…”

Synthesis, Structure, and Fungicidal Activity of Organotin Dithiocarbamates Derived from Pyridinamines and Aryl Diamines

“…In the family of dithiocarbamate derivatives, organotin dithiocarbamates have received considerable attention because of their significant biological activity, for example, as antitumor , antibacterial , and antifungal agents, as well as other potential applications in supramolecular chemistry and materials science . Recently, the multifunctional dithiocarbamate ligands, such as dithiocarbamates with additional donor atoms and bridging bis‐ and tris‐ dithiocarbamate ligands, have been used for the construction of high nuclearity organotin aggregates; some of which showed good molecular recognition function for anionic and neutral species . A number of macrocyclic and cagelike organotin dithiocarbamates have been synthesized by this strategy.…”

Synthesis, structure and cytotoxic activity of binuclear phenyltin(IV) complexes with N,N′‐bis(2‐hydroxybenzyl)‐1,2‐ethanebis(dithiocarbamate) ligand

“…In recent years, considerable progress has been made in the synthesis, characterization and application of organotin compounds 1, 2. Interest in dithiocarbamate complexes of organotin species has arisen because of their variety of structures and biological properties, suggesting their potential as anticancer agents, antimicrobials and insecticides 3–13. Depending on the number of organic groups, the coordination mode of CS 2 moiety and the number of ligands attached to tin atom, the coordination geometry of tin atom in the complexes may be tetrahedral, trigonal‐bipyramidal, square‐pyramidal, octahedral or pentagonal bipyramidal 3.…”

“…Depending on the number of organic groups, the coordination mode of CS 2 moiety and the number of ligands attached to tin atom, the coordination geometry of tin atom in the complexes may be tetrahedral, trigonal‐bipyramidal, square‐pyramidal, octahedral or pentagonal bipyramidal 3. The structure of organotins may be monomeric, dimeric, trimeric or supramolecular based on the absence and presence of secondary noncovalent interactions between the ligand molecules 3, 6–8. In general, the organotin moiety, the ligand and the coordination number of tin atoms appear to play important roles in determining their cytotoxicity activity 1, 2, 14.…”