Formation of a silicon-containing macrocycle with a pyridoxalimine Schiff base ligand.
The reaction of dichlorodiphenylsilane with a polydentate Schiff base ligand derived from pyridoxal and 2-hydroxyaniline yields the macrocyclic centrosymmetric silicon compound 9,27-dimethyl-3,3,21,21-tetraphenyl-2,4,20,22-tetraoxa-8,13,26,31-tetraaza-3,21-disilapentacyclo[30.4.0.0(6,11).0(14,19).0(24,29)]hexatrideca-1(32),6,8,10,12,14,16,18,24,26,28,30,33,35-tetradecaene-10,28-diol chloroform tetrasolvate, C(52)H(44)N(4)O(6)Si(2) x 4CHCl(3). The asymmetric unit contains half of the macrocycle and two molecules of chloroform, with C-H...O and C-H...N contacts binding the two guests to the host in the crystal structure. This macrocyclic silicon compound represents a promising host for molecular-recognition processes and for the construction of nanostructures.
Böhme
Uwe
U
Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, Freiberg, Germany. uwe.boehme@chemie.tu-freiberg.de
Günther
Betty
B
Schwarzer
Anke
A