Mr. Churchill et al., SILICONE GREASE AS A PRECURSOR TO A PSEUDOCROWN ETHER LIGAND - CRYSTAL-STRUCTURE OF [K-]4(]3[K(ME2SIO)7+][INH(CH2CME3)3), Journal of the Chemical Society, Chemical Communications, (20), 1993, pp. 1577-1578
The crystallization of K[InH(CH2CMe3)3] from heptane in the presence o
f silicone grease led to the formation of the title compound, in which
one potassium cation is surrounded by a planar cyclo-(Me2SiO)7 ligand
; K+...O distances range from 2.86(3) to 2.99(4) angstrom.