Self-assembly of organotin(IV) 4-fluorobenzeneseleninato complexes: 1D polymeric chain, helical double-chain polymer and tetranuclear cage

Organotin(IV) Complexes Containing Sn–O–Se Moieties: A Structural Inventory

“…Since then, numerous X-ray structures of triorganotin(IV) organoseleninate compounds exhibiting a comparable organization of one-dimensional zig-zag chains have been solved and published. They vary according to the nature of the organic ligands bound to tin (exclusively phenyl and methyl derivatives) and also to selenium (mainly arene derivatives): [Ph 3 Sn(O 2 SeC 6 H 4 -2-Me)] n , 29 [Ph 3 Sn(O 2 SeC 6 H 4 -4-Me)] n , 30 [Ph 3 Sn(O 2 SeC 6 H 4 -4-t-Bu)] n , 30 [Ph 3 Sn(O 2 SeC 6 H 4 -4i-Pr)] n , 31 [Ph 3 Sn(O 2 SeC 6 H 4 -4-Cl)] n , 30 [Ph 3 Sn(O 2 SeC 6 H 4 -4-Et)] n , 32 [Ph 3 Sn(O 2 SeC 6 H 4 -2-Et)] n , 32 [Ph 3 Sn(O 2 SeC 6 H 4 -4-OMe)] n , 31 [Ph 3 Sn(O 2 SeC 6 H 4 -4-F)] n , 33 (Figure 14). 32,34 Both complexes were prepared from trimethyltin chloride used as a triorganotin precursor, and 4-ethylbenzeneseleninic acid and 2-trifluoromethylbenzeneseleninic acid, respectively.…”

Spectroscopic and X‐ray structural characterization of new polymeric organotin(IV) carboxylates and their in vitro antifungal activities: Part II

“…In effect, parallel 1D zigzag chains are interconnected by C─H⋅⋅⋅π interactions forming 2D supramolecular sheets along the [111] base vector (Figure , bottom). The geometric parameters associated with the C(22)─H(22)⋅⋅⋅Cg 1 ii (H(22)⋅⋅⋅Cg 1 , 2.78 Å; C(22)⋅⋅⋅Cg 1 , 3.626 Å; C(22)─H(22)⋅⋅⋅Cg 1 , 153°) and C(25)─H(25)⋅⋅⋅Cg 1 iii (H(25)⋅⋅⋅Cg 1 , 2.78 Å; C(25)⋅⋅⋅Cg 1 , 3.630 Å; C(25)─H(25)⋅⋅⋅Cg 1 , 152°) interactions are similar to each other and fall within the expected ranges (( ii ) ½ + x , −½ − y , ½ + z ; ( iii ) ½ + x , ½ − y , ½ + z ) …”