The title compound, [AS(C18H15OSi)(3)], contains a trigonal pyramidal
AsO3 unit bonded to three tetrahedral SiPh(3) groups, Principal dimens
ions include mean As-O 1.746(14), mean Si-O 1.646(6) Angstrom, O-As-O
96.70(8)-99.42(9), As-O-Si 133.15 (10)-146.94 (11),O-Si-C 104.44 (10)-
111.67 (9)degrees.