Table 3

Assignment of FTIR spectra.

Material Wave number (1/cm)
1 2 3 4 5 6 7 8 9
C=C CH2 CH2 C=O C=O OH SH Sn-C HOH
(asym) (sym) (acid) (ester)
RBFA 3007 2924 2853 1711
TOFA 3007 2924 2855 1709
Mercaptoethanol 2934 2874 3372 2556
Reverse ester from RBFA 3007 2924 2853 1740 2571
Reverse ester from TOFA 3005 2924 2853 1740 2571
Dimethyl tin chloride solution 3418 808 1630
REOT from RBFA 3007 2922 2853 1742 763
REOT from TOFA 3005 2922 2853 1740 763

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