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	hartrees
Energy at 0K	-760.129725
Energy at 298.15K	-760.133662
HF Energy	-759.145272
Nuclear repulsion energy	289.320964

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3808	3633	127.62
2	A'	1287	1228	150.62
3	A'	1175	1121	156.60
4	A'	975	930	106.78
5	A'	712	679	156.38
6	A'	546	520	27.65
7	A'	522	498	11.92
8	A'	392	374	4.73
9	A"	1183	1129	282.70
10	A"	553	528	44.31
11	A"	407	388	18.90
12	A"	191	182	84.16

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.144	0.012	0.000
O2	-0.482	1.406	0.000
O3	1.527	0.081	0.000
O4	-0.482	-0.703	1.209
O5	-0.482	-0.703	-1.209
H6	1.810	-0.845	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4340	1.6733	1.4448	1.4448	2.1339
O2	1.4340		2.4070	2.4310	2.4310	3.2125
O3	1.6733	2.4070		2.4730	2.4730	0.9684
O4	1.4448	2.4310	2.4730		2.4176	2.5952
O5	1.4448	2.4310	2.4730	2.4176		2.5952
H6	2.1339	3.2125	0.9684	2.5952	2.5952

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.581	O2	Cl1	O3	101.261
O2	Cl1	O4	115.226	O2	Cl1	O5	115.226
O3	Cl1	O4	104.723	O3	Cl1	O5	104.723
O4	Cl1	O5	113.582

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

using model chemistry: QCISD/6-311G**

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: QCISD/6-311G**

States and conformations

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