Open AccessSynthesis and structural characterization of bis(tropolonatodimethylgallium), [(C7H5O2)Ga(CH3)2]2
Author(s) -
Steven J. Rettig,
Alan Storr,
James Trotter
Publication year - 1984
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v84-293
Subject(s) - chemistry , monoclinic crystal system , crystallography , gallium , bond length , ring (chemistry) , crystal structure , dimer , libration (molecule) , group (periodic table) , atom (system on chip) , molecular geometry , x ray crystallography , solid state , stereochemistry , molecule , geometry , diffraction , physics , point (geometry) , mathematics , organic chemistry , computer science , optics , embedded system
Details of the synthesis, physical properties, and solid-state structure of [(C 7 H 5 O 2 )Ga(CH 3 ) 2 ] 2 are reported. Crystals of bis(tropolonatodimethylgallium) are monoclinic, a = 10.2669(9), b = 9.3237(3), c = 10.8671(10) Å, β = 112.896(4)°, Z = 2, space group P2 1 /n (22°C, λ = 0.70930 Å). The structure was solved by conventional heavy-atom techniques and was refined by full-matrix least-squares procedures to R = 0.034 and R w = 0.037 for 1746 reflections with I ≥ 3σ(I). The centrosymmetric binuclear dimer features five-coordinate gallium atoms having irregular trigonal bipyramidal coordination geometry and a planar four-membered Ga 2 O 2 ring. Important bond lengths (corrected for libration) are Ga—O(equatorial) = 1.972(2), Ga—O(axial) = 2.025(2) and 2.551(2) Å, and Ga—C = 1.951(4) and 1.954(4) Å.