A discrete unsymmetrically substituted dihydrodioxadistannetane with both η1 and intramolecular η2μ2 sulfonate bondings
摘要:
Hydrolysis of the aryltripropynyltin (3) in the presence of an arylsulfonic acid resulted in the formation of a new tetrasulfonato 1,3-dihydro-1,3-dioxa-2,4-diaryl-2,4-distannetane (4). Its crystal structure revealed that the molecule is the smallest discrete tin sulfonate cluster reported up to now with absence of intermolecular interactions. Molecule 4 also exhibits unusual eta(1) and intramolecular eta(2)mu(2) bonding modes for the sulfonate groups. Moreover, while only symmetrical 1,3-dihydro-1,3-dioxa-distannetanes have been described so far, the tin atoms in 4 are differently substituted. (C) 2008 Elsevier B.V. All rights reserved.
A tin sulfonateâoxideâhydroxide tetracation with two different sulfonate bindings, an electrostatic and a monohapto covalent one, and a tin sulfonateâoxideâhydroxide monocation with two other kinds of sulfonate bindings, an electrostatic and a dihapto bridging one are described here.
Hydrolysis of the aryltripropynyltin (3) in the presence of an arylsulfonic acid resulted in the formation of a new tetrasulfonato 1,3-dihydro-1,3-dioxa-2,4-diaryl-2,4-distannetane (4). Its crystal structure revealed that the molecule is the smallest discrete tin sulfonate cluster reported up to now with absence of intermolecular interactions. Molecule 4 also exhibits unusual eta(1) and intramolecular eta(2)mu(2) bonding modes for the sulfonate groups. Moreover, while only symmetrical 1,3-dihydro-1,3-dioxa-distannetanes have been described so far, the tin atoms in 4 are differently substituted. (C) 2008 Elsevier B.V. All rights reserved.