Vibrational Spectra of Lithium Tetramethyl-aluminate and Lithium Tetramelthylzincate
American Chemical Society
Infrared and Raman spectra of lithium tetramethylzincate, Li2Zn(CH4)4, and lithium tetramethylaluminate, LiAl(CH3)4, and their isotopic analogs as solids have been measured and assigned. In both complexes, Li-C stretching modes have been observed at around 300 cm-1 in the ir spectra. The local symmetries of Zn(CH3)43- and Al(CH3)4- ions are Τd and Vd (D2d), respectively, LiAl(CH3)4 seems to form a linear chain analogous to LiAl(C2H5)4.