Growth and Characterization of Agar Gel Grown Brushite Crystals

Table 2

FTIR wave numbers and vibrations assignment of brushite crystal.

Sr. no.	Observed wave number in cm^−1	Bonds/vibrational assignments
1	3541.42	O–H stretching of water
2	3151.79	O–H stretching of water
3	2395.67	Weak absorption HPO4^2−
4	1766.85	Weak absorption HPO4^2−
5	1649.19	H–O–H symmetric bending vibrations
6	1215.19	PO4 P=O associated stretching vibrations
7	1126.47	PO4 bond, P=O stretching vibrations
8	1062.81	PO4 bond, P=O stretching vibrations
9	987.59	P–O–P asymmetric stretching bond
10	862.21	P–O–P asymmetric stretching bond
11	808.20	P–O–P asymmetric stretching bond
12	580.59	(H–O–) P=O bond acid phosphate
13	520.80	(H–O–) P=O bond acid phosphate