Low-temperature phase of bis(2-methoxycarbonyl-2-methylpropyl) 2,5-diisopropylidene-3,4-bis(2-methoxycarbonyl-2-methylpropoxycarbonyl)hex-3-enedioate, a crystal structure with six independent pseudo-related molecules
Jw. Bats et al., Low-temperature phase of bis(2-methoxycarbonyl-2-methylpropyl) 2,5-diisopropylidene-3,4-bis(2-methoxycarbonyl-2-methylpropoxycarbonyl)hex-3-enedioate, a crystal structure with six independent pseudo-related molecules, ACT CRYST C, 55, 1999, pp. 1183-1186
The crystal structure of the title compound, C38H56O16, is disordered above
298 K. A tripling of the unit cell is observed on cooling. The structure a
t 136 K contains six ordered molecules related by pseudo-translation vector
s of (1/3,0,-1/3), pseudo-inversion centers and pseudo-twofold screw axes.