Molecular Cage Assembly by Sn−O−Sn Bridging of Di‐, Tri‐ and Tetranuclear Organotin Tectons: Extending the Spacing in Double Ladder Structures

Abstract

Hydrolysis reactions of di-and trinuclear organotin halides yielded large novel cage compounds containing SnÀ OÀ Sn bridges. The molecular structures of two octanuclear tetraorganodistannoxanes showing double-ladder motifs, viz., [{Me 3 SiCH 2 (Cl)SnCH 2 YCH 2 Sn(OH)CH 2 SiMe 3 } 2 (μ-O) 2 ] 2 [1, Y = p-(Me) 2 SiC 6 H 4 -C 6 H 4 Si(Me) 2 ] and [{Me 3 SiCH 2 (I) SnCH 2 YCH 2 Sn(OH)CH 2 SiMe 3 } 2 (μ-O) 2 ] 2 •0.48 I 2 [2•0.48 I 2 , Y = p-(Me) 2 SiC 6 H 4 -C 6 H 4 Si(Me) 2 ], and the hexanuclear cage-compound 1,3,6-C 6 H 3 (p-C 6 H 4 Si(Me) 2 CH 2 Sn(R) 2 OSn (R) 2 CH 2 Si(Me) 2 C 6 H 4 -p) 3 C 6 H 3 -1,3,6 (3, R = CH 2 SiMe 3 ) are reported. Of these, the co-crystal 2•0.48 I 2 exhibits the largest spacing of 16.7 Å reported to date for distannoxane-based double ladders. DFT calculations for the hexanuclear cage and a related octanuclear congener accompany the experimental work.

Diol Struts Stabilize the Structure of a 3D Hydrogen-Bonded Framework with Large Cavities: Inclusion of Solvated Nile Red in the Solid State

“…The product composition and tin coordination geometry depend mostly on the organic substituents attached to the metal atom and the solvent employed in the reaction. The product portfolio of tin-carboxylate ligand reactions covers di-, tri-, and tetranuclear macrocyclic ring structures, 1D, 2D, and 3D metal coordination polymers (MCPs), and hydrogen-bonded assemblies. ,− At this point, it is also important to mention that organotin­(IV) compounds are associated with a wide range of applications due to antibacterial, fungicidal, , anti-inflamatory, antiproliferative, antidiabetic , and antitumor activities. ,, …”