TY - JOUR
T1 - Tertiary phosphine adducts of alane and gallane
AU - Elms, Fiona M.
AU - Gardiner, Michael G.
AU - Koutsantonis, George A.
AU - Raston, Colin L.
AU - Atwood, Jerry L.
AU - Robinson, Kerry D.
PY - 1993/5/4
Y1 - 1993/5/4
N2 - Thermally stable mono-tri-t-butylphosphine adducts of alane and gallane, H3MptBu3 (M Al, 1; M Ga, 2) and the gallane rich adducts of 1,2-bis(diisopropylphosphino)ethane and 1,2-bis(diphenylphosphino)ethane, [(H3Ga)2{(PR2CH2)2}] (R iPr, 3; R Ph, 4), have been prepared from LiMH4/HCI/phosphine; reactions involving H3MNMe3/PtBu3 also yield 1 and 2, for the former via a mixed donor tBu3PAl(H)3NMe3 (5), which decomposes to 1 and NMe3 at ca. 40°C; compounds 1 and 2, and the previously reported alane analogue of 3, viz. [(H3Al)2{(PiPr2CH2)2}] (6) have been shown to be four coordinate (Al-P, 2.471(3) and 2.451(3) Å, 1 and 6; Ga-P 2.444(6) Å 2). Ab initio calculations on relevant model systems, H3GaPMe3 (DZP level) and H3Al(PR3)2 (R H or Me; D95* level) are reported, Ga-P 2.550 Å, and Al-P 2.828 Å (R H), 2.786 Å (R Me).
AB - Thermally stable mono-tri-t-butylphosphine adducts of alane and gallane, H3MptBu3 (M Al, 1; M Ga, 2) and the gallane rich adducts of 1,2-bis(diisopropylphosphino)ethane and 1,2-bis(diphenylphosphino)ethane, [(H3Ga)2{(PR2CH2)2}] (R iPr, 3; R Ph, 4), have been prepared from LiMH4/HCI/phosphine; reactions involving H3MNMe3/PtBu3 also yield 1 and 2, for the former via a mixed donor tBu3PAl(H)3NMe3 (5), which decomposes to 1 and NMe3 at ca. 40°C; compounds 1 and 2, and the previously reported alane analogue of 3, viz. [(H3Al)2{(PiPr2CH2)2}] (6) have been shown to be four coordinate (Al-P, 2.471(3) and 2.451(3) Å, 1 and 6; Ga-P 2.444(6) Å 2). Ab initio calculations on relevant model systems, H3GaPMe3 (DZP level) and H3Al(PR3)2 (R H or Me; D95* level) are reported, Ga-P 2.550 Å, and Al-P 2.828 Å (R H), 2.786 Å (R Me).
UR - http://www.scopus.com/inward/record.url?scp=0002957726&partnerID=8YFLogxK
U2 - 10.1016/0022-328X(93)80105-K
DO - 10.1016/0022-328X(93)80105-K
M3 - Article
AN - SCOPUS:0002957726
SN - 0022-328X
VL - 449
SP - 45
EP - 52
JO - JOURNAL OF ORGANOMETALLIC CHEMISTRY
JF - JOURNAL OF ORGANOMETALLIC CHEMISTRY
IS - 1-2
ER -