[LI-2(MU(3)-(T)BU(2)P)(MU(2)-(T)BU(2)P)(THF)](2) - A REDETERMINATION

The crystal structure of the title compound as its n-hexane solvate, b ix(mu(3)-di-tert-butylphosphino)-1:2:3 kappa(3)P-bix(mu(2)-di-tert-but ylphosphino)-1:2 kappa(2)P;3:4 kappa(2)P-bis(tetrahydrofuran)-1 kappa O; 4 kappa O-tetra-lithium, [Li-4(C8H18P)(4)(C4H8O)(2)].C6H14, has bee n redetermined to improved precision using diffractometer data collect ed at 213 K, resulting in more accurate bond distances and angles with reduced standard deviations. Furthermore, the relatively high R value s (R = 0.10, wR = 0.13) of the previous structure determination at roo m temperature [Jones, Stuart & Wright (1983).J. Am. Chem. Soc. 105, 74 59-7460] were caused by the omission of the molecule of solvent n-hexa ne, which was not localized; the inclusion of this solvent molecule re duced the R value to 0.0552.