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	hartrees
Energy at 0K	-760.264218
Energy at 298.15K	-760.268416
HF Energy	-759.166101
Nuclear repulsion energy	296.957665

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3817	3616	131.67
2	A'	1414	1340	250.92
3	A'	1278	1211	95.61
4	A'	1129	1070	83.17
5	A'	796	754	185.96
6	A'	603	571	9.46
7	A'	588	557	24.83
8	A'	429	406	4.73
9	A"	1353	1282	283.43
10	A"	605	573	32.34
11	A"	441	418	13.73
12	A"	195	185	88.64

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.138	0.010	0.000
O2	-0.470	1.370	0.000
O3	1.480	0.087	0.000
O4	-0.470	-0.687	1.179
O5	-0.470	-0.687	-1.179
H6	1.784	-0.832	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4002	1.6195	1.4086	1.4086	2.0980
O2	1.4002		2.3342	2.3702	2.3702	3.1510
O3	1.6195	2.3342		2.4061	2.4061	0.9678
O4	1.4086	2.3702	2.4061		2.3571	2.5478
O5	1.4086	2.3702	2.4061	2.3571		2.5478
H6	2.0980	3.1510	0.9678	2.5478	2.5478

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	105.587	O2	Cl1	O3	101.000
O2	Cl1	O4	115.098	O2	Cl1	O5	115.098
O3	Cl1	O4	105.022	O3	Cl1	O5	105.022
O4	Cl1	O5	113.582

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

using model chemistry: CCD/6-31G(2df,p)

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: CCD/6-31G(2df,p)

States and conformations

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