12.10 A compound has strong infrared absorptions at the following frequencies. Suggest likely functional groups that may be present.
(a) 1735, 1250, and 1100 cm-1
(b) 1745 cm-1 but not 1000-1250 cm-1
(c) 1710 and 2500-3400 (broad) cm-1
(d) A single band at about 3300 cm-1
(e) 3600 and 1050 cm-1
(f) 1100 cm-1 but not 3300-3650 cm-1