Synthese und Kristallstrukturen von Dimethylgalliumdiphenylphosphinat und Diethylindiumdiphenylphosphinat / Synthesis and Crystal Structures of Dimethylgalliumdiphenylphosphinate and Diethylindiumdiphenylphosphinate

Abstract

The synthesis of diethylindiumdiphenylphosphinate and the crystal structures of dimethylgalliumdiphenylphosphinate and diethylindiumdiphenylphosphinate are reported. The two structures confirm the proposed dimeric nature of the title compounds with bridging diphenylphosphinate groups. [Ph2P(O)2Ga(CH3)]2 crystallizes triclinically, PĪ, with a = 9.483(6), b = 10.216(4), c = 8.780(9)Å, α = 101.66(5)°, β = 113.74(5)°, γ = 69.93(5)° and Ζ = 1 (dimer). [Ph2P(O)2In(C2H5)2]2 crystallizes monoclinically, C2/c, with a = 19.971(5), b = 8.590(2), c = 19.457(5)Å, β = 102.91(2)° and Ζ = 4 (dimers). Both structures contain tetrahedrally coordinated phosphorous and metal atoms.

Bis[(μ-2,6-diphenylphenoxido-O:O)diethylgallium]

“…The Ga---O distances are in good agreement with earlier work on dimeric species (being longer than the monomeric values) and the geometry at the Ga atom is distorted tetrahedral (see Table 2). The Ga---C distances [1.961 (3)-1.971 (3)A] are within the expected range (Hahn, Schneider & Reier, 1990).…”

Synthesis and Characterization of Dimeric, Trimeric, and Tetrameric Gallophosphonates and Gallophosphates

“…All Ga−O distances, P−O distances, and P−O−Ga angles lie within the ranges observed for other gallophosphonate and gallophosphinate heterocycles. Comparison of average bond distances and angles for 6 , 8 , and 10 to those for 1 , [Me 2 GaO 2 PPh 2 ] 2 , [ t Bu 2 GaO 2 PPh 2 ] 2 , and [ t Bu 2 GaO 2 P(OGa t Bu 2 )Ph] 2 21 is provided in Table . Noteworthy are the trans orientation of trimethylsiloxide substituents in the molecular structure of 6 and the cis orientation of trimethylsiloxide substituents in 8 .…”

Aluminium compounds containing bidentate ligands: chelate ring size and rigid conformation effects

“…9,10 Furthermore, as with the carboxylate analogs, the eight- Similar chair-like conformations have been observed for the gallium diphenylphosphinate compounds [R 2 Ga(µ-O 2 PPh 2 )] 2 . 11 The puckering of the Al 2 O 2 C 2 N 2 ring may be considered to be as a result of folding of the eight-membered ring along the two inter-ligand O ؒ ؒ ؒ N vectors. The extent of folding (θ ring ) is defined as the angle between the AlON planes and the O 2 C 2 N 2 plane.…”