(b) Mopane worm function group summary

Temperature (°C)	O-H stretching	N-H stretch	C-H asymmetric stretch	Asymmetrical stretching in O=C=O	Stretching vibration in C-O	Carbonyl group	N-H bending	O-H bending	P=O stretch	C-N and C-O stretch	N-H symmetric deformation	Hetero-oxy compounds
64-200°C
200-300°C			√	√	√	√	√	√	√		√	√
300-450°C	√	√	√	√	√	√	√	√	√	√	√	√
>450°C			√		√	√			√	√	√