The structure of the title compound, C
22H
22N
2O
3, was determined by X-rays at
T=290 K.
M
r
=362.427, orthorombic, space group
Pbca,
a=11.666(4),
b=15.691(1),
c=20.931(1) Å,
V=3831.4 Å
3,
Z=8,
D
x
=1.257 Mgm
–3. Cu
K
radiation (graphite crystal monochromator,
=1.54178 Å),
(Cu
K)=6.42 cm
–1. Final conventional
R-factor=0.050,
R
w
=0.062 for 2552
observed
reflections and 301 variables. The structure was solved using
Multan.