100243-98-9Relevant academic research and scientific papers
HCr[(Me2PCH2)3CMe]2 +BEt4- : The first synthesis of a cationic hydride complex from HBEt3-
Thaler, Eric,Folting, Kirsten,Huffman, John C.,Caulton, Kenneth G.
, p. 374 - 377 (2008/10/08)
Reaction of CrCl3(tripod) (tripod = MeC(CH2PMe2)3) with LiHBEt3 in THF yields HCr(tripod)2+, isolated as its BEt4- salt; LiDBEt3 gives DCr(tripod)2+. The compound has been characterized by infrared and 1H and 31P NMR spectroscopies, by elemental analysis, and by single-crystal X-ray diffraction. While the infrared spectrum shows an absorption for a terminal hydride, both NMR-active nuclei show evidence for rapid intramolecular migration of the hydride. Three equivalent sites are equally occupied by the hydride in the solid state, which leads to the observed disorder in the unit cell. The cation is deprotonated in THF solution by n-BuLi or LiHBEt3 to yield Cr(tripod)2. Crystal data (-159°C) for the hydride: space group P421c with a = 14.059 (5) A?, c = 19.190 (6) A?, and Z = 4.
