Premium
Molecular Cage Assembly by Sn−O−Sn Bridging of Di‐, Tri‐ and Tetranuclear Organotin Tectons: Extending the Spacing in Double Ladder Structures
Author(s) -
RojasLeón Irán,
GómezJaimes Gelen,
MontesTolentino Pedro,
Hiller Wolf,
Alnasr Hazem,
RodríguezMolina Braulio,
HernándezAhuactzi Irán F.,
Beltrán Hiram,
Jurkschat Klaus,
Höpfl Herbert
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202101055
Subject(s) - crystallography , chemistry , cage , stereochemistry , crystal structure , halide , inorganic chemistry , mathematics , combinatorics
Hydrolysis reactions of di‐ and trinuclear organotin halides yielded large novel cage compounds containing Sn−O−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.