Hydrolytic stability of SnCl4 and GaCl3 in the formation of [cis-SnCl4(H2O)2] center dot 18-crown-6 center dot 2H(2)O and [[2,2,2]cryptand+2H(+)][GaCl4](2)

摘要

The combination of anhydrous SnCl4 with 18-crown-6 in aqueous conditions results in formation of the non-hydrolysed product [cis-SnCl4(H2O)(2)] . 18-crown-6 . 2H(2)O. The X-ray crystal structure shows extensive intermolecular hydrogen bonding involving the cis-octahedral SnCl4(H2O)(2) units, the uncoordinated water molecules and the crown ether. Similarly, [2,2,2]cryptand reacts with an aqueous solution formed by adding anhydrous GaCl3 to slightly acidic water, affording [[2,2,2]cryptand+2H(+)][GaCl4](2). (C) 2003 Elsevier B.V. All rights reserved. [References: 36]