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	hartrees
Energy at 0K	-760.455725
Energy at 298.15K	-760.459856
HF Energy	-759.282880
Nuclear repulsion energy	294.394009

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3790	3567	134.70
2	A'	1369	1288	217.12
3	A'	1253	1179	111.25
4	A'	1075	1011	93.82
5	A'	774	729	182.82
6	A'	587	552	12.96
7	A'	574	540	23.78
8	A'	420	395	4.57
9	A"	1293	1217	283.72
10	A"	592	557	34.15
11	A"	435	409	13.19
12	A"	184	173	83.65

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.138	0.011	0.000
O2	-0.474	1.383	0.000
O3	1.493	0.083	0.000
O4	-0.474	-0.692	1.190
O5	-0.474	-0.692	-1.190
H6	1.784	-0.840	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4131	1.6321	1.4219	1.4219	2.1019
O2	1.4131		2.3579	2.3915	2.3915	3.1694
O3	1.6321	2.3579		2.4261	2.4261	0.9684
O4	1.4219	2.3915	2.4261		2.3792	2.5572
O5	1.4219	2.3915	2.4261	2.3792		2.5572
H6	2.1019	3.1694	0.9684	2.5572	2.5572

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.968	O2	Cl1	O3	101.241
O2	Cl1	O4	115.038	O2	Cl1	O5	115.038
O3	Cl1	O4	104.987	O3	Cl1	O5	104.987
O4	Cl1	O5	113.570

All results from a given calculation for HClO₄ (perchloric acid)

using model chemistry: CCSD/cc-pVTZ

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for HClO4 (perchloric acid)

using model chemistry: CCSD/cc-pVTZ

States and conformations

All results from a given calculation for HClO₄ (perchloric acid)