2001 年 50 巻 7 号 p. 515-519
The 1H- and 13C-NMR spectra of trimethyl (1-indenyl) germanium (IV) and dimethylbis (1-indenyl) germanium (IV) compounds were measured. Assignments of the chemical shifts for 1H and 13C in those compounds were obtained by means of hydrogen-hydrogen nuclear Overhauser effect spectroscopy (H-H NOESY), hydrogen-hydrogen correlation spectroscopy (H-H COSY) and carbon-hydrogen correlation spectroscopy (C-H COSY). The methyl proton and carbon signals for two stereoisomers (R,R and R,S) in the dimethylbis (1-indenyl) germanium (IV) compound were separated into three signals, with a relative signal intensity of 1 : 2 : 1; the other protons and carbons were separated, except for H1, H4, C5, C9, into two signals. These results were considered to show that the separated signals were caused by being magnetically nonequivalent in the two stereoisomers.