TY - JOUR
T1 - A unique lithium halide complex, [(LiBr)2·3HMPA· toluene]
T2 - Synthesis from reaction of solid NH4Br with Bu nLi in HMPA (hexamethylphosphoramide)/toluene media, crystal structure showing two Li-Br units linked by three μ2-HMPA ligands, and detection of 7Li ⋯ 31P coupling in solutions of the complex
AU - Barr, Donald
AU - Doyle, Michael J.
AU - Mulvey, Robert E.
AU - Raithby, Paul R.
AU - Reed, David
AU - Snaith, Ronald
AU - Wright, Dominic S.
PY - 1989
Y1 - 1989
N2 - Reaction of solid NH4Br with BunLi and HMPA (hexamethylphosphoramide) (1: 1: 2 ratio) in toluene produces (LiBr) 2·3HMPA·toluene, (1), shown by X-ray crystallography to contain (LiBr)2·3HMPA molecules whose two terminal Li-Br units are linked by three μ2-HMPA ligands and with toluene molecules lying between these units in the lattice; in arene solutions, the (LiBr)2·3HMPA units remain intact, giving rise in 7Li n.m.r. spectra to 1: 3: 3: 1 quartets caused by through-bond (O=P) coupling of each 7Li nucleus to three 31P(HMPA) centres.
AB - Reaction of solid NH4Br with BunLi and HMPA (hexamethylphosphoramide) (1: 1: 2 ratio) in toluene produces (LiBr) 2·3HMPA·toluene, (1), shown by X-ray crystallography to contain (LiBr)2·3HMPA molecules whose two terminal Li-Br units are linked by three μ2-HMPA ligands and with toluene molecules lying between these units in the lattice; in arene solutions, the (LiBr)2·3HMPA units remain intact, giving rise in 7Li n.m.r. spectra to 1: 3: 3: 1 quartets caused by through-bond (O=P) coupling of each 7Li nucleus to three 31P(HMPA) centres.
UR - http://www.scopus.com/inward/record.url?scp=37049089357&partnerID=8YFLogxK
U2 - 10.1039/C39890000318
DO - 10.1039/C39890000318
M3 - Article
AN - SCOPUS:37049089357
SN - 0022-4936
SP - 318
EP - 319
JO - Journal of the Chemical Society, Chemical Communications
JF - Journal of the Chemical Society, Chemical Communications
IS - 5
ER -