The structure of the title compound (perhydroisoindole) was determined by X-rays, using Cu
K
radiation (graphite-crystal monochromator,
=1.54184 Å):
T=290 K, C
16H
17NO
4,
M
r
=287.31, orthorhombic, space group
Pbcn,
a=18.732(1),
b=10.663(1),
c=14.074(1) 0A,
V
c
=2811.2 Å
3,
Z=8,
D
x
=1.361 Mg m
–3 and
(Cu
K)=8.19 cm
–1. The final conventional
R-factor=0.036, (
R
w
=0.046) for 1951 unique reflections and 241 variables. The structure was solved using
Multan. The six-membered ring of the molecule is in the chair configuration. The molecules are connected by hydrogen bonds.