TY - JOUR
T1 - Synthesis and Structural Characterization of Homoleptic Gallium Amides
AU - Atwood, David A.
AU - Atwood, Vicki O.
AU - Cowley, Alan H.
AU - Jones, Richard A.
AU - Atwood, Jerry L.
AU - Bott, Simon G.
PY - 1994/7/1
Y1 - 1994/7/1
N2 - The homoleptic Ga(III) amides [(t-Bu(H)N)2Ga(μ-N(H)t-Bu)]2 (1) and Ga(N(t-Bu)SiMe3)3 (2) have been synthesized via the reaction of GaCl3 with 3 equiv of the appropriate lithium amide. A third tris(amide), Ga(tmp)3 (3) (tmp = 2,2,6,6-tetramethylpiperidide), was prepared by the thermal reaction of GaCl3 with 3 equiv of Htmp. The structures of 1 and Ga(N(SiMe3)2)3 (4) have been determined by single-crystal X-ray diffraction methods. Compound 1 crystallizes in the monoclinic space group C2/m (No. 12) with a = 9.879(2) Å, b = 17.427(7) Å, c = 19.742(1) Å, β = 101.38(3)°, V = 3332(23) Å3, and Z = 4. Compound 4 crystallizes in the trigonal space group P31c (No. 163) with a = 16.050(1) Å, c = 8.6063(7) Å, V = 1920(5) Å3, and Z = 2. Compound 1 exists in the crystalline state as discrete dimeric units with two bridging and four terminal amido groups. The crystalline state of 4 comprises discrete monomers with D3 symmetry. The structure of 2 is disordered.
AB - The homoleptic Ga(III) amides [(t-Bu(H)N)2Ga(μ-N(H)t-Bu)]2 (1) and Ga(N(t-Bu)SiMe3)3 (2) have been synthesized via the reaction of GaCl3 with 3 equiv of the appropriate lithium amide. A third tris(amide), Ga(tmp)3 (3) (tmp = 2,2,6,6-tetramethylpiperidide), was prepared by the thermal reaction of GaCl3 with 3 equiv of Htmp. The structures of 1 and Ga(N(SiMe3)2)3 (4) have been determined by single-crystal X-ray diffraction methods. Compound 1 crystallizes in the monoclinic space group C2/m (No. 12) with a = 9.879(2) Å, b = 17.427(7) Å, c = 19.742(1) Å, β = 101.38(3)°, V = 3332(23) Å3, and Z = 4. Compound 4 crystallizes in the trigonal space group P31c (No. 163) with a = 16.050(1) Å, c = 8.6063(7) Å, V = 1920(5) Å3, and Z = 2. Compound 1 exists in the crystalline state as discrete dimeric units with two bridging and four terminal amido groups. The crystalline state of 4 comprises discrete monomers with D3 symmetry. The structure of 2 is disordered.
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U2 - 10.1021/ic00093a010
DO - 10.1021/ic00093a010
M3 - Article
AN - SCOPUS:0000691832
VL - 33
SP - 3251
EP - 3254
IS - 15
ER -