Formation of 2 : 1 complexes between alkylammonium cations and diaza crown ethers
Abstract
The diaza-24-crown-8 derivative (2) forms a 2 : 1 complex with benzylammonium thiocyanate in deuteriomethylene chloride solution; under similar conditions the diaza-24-crown-6 derivative (3) forms 1 : 1 complexes with primary alkylammonium thiocyanates but a crystalline complex of (3) with benzylammonium thiocyanate is shown by X-ray analysis to be a 2 : 1 complex.