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	hartrees
Energy at 0K	-760.506869
Energy at 298.15K	-760.510910
HF Energy	-759.284809
Nuclear repulsion energy	291.884336

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3699	3525	123.58
2	A'	1359	1295	249.79
3	A'	1209	1152	89.60
4	A'	1090	1039	64.97
5	A'	702	669	217.68
6	A'	562	535	16.35
7	A'	546	520	5.77
8	A'	401	383	4.29
9	A"	1304	1243	281.12
10	A"	567	540	23.27
11	A"	411	392	13.21
12	A"	202	192	78.65

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.145	0.008	0.000
O2	-0.477	1.389	0.000
O3	1.516	0.095	0.000
O4	-0.477	-0.699	1.198
O5	-0.477	-0.699	-1.198
H6	1.805	-0.837	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4205	1.6633	1.4298	1.4298	2.1251
O2	1.4205		2.3765	2.4070	2.4070	3.1878
O3	1.6633	2.3765		2.4569	2.4569	0.9753
O4	1.4298	2.4070	2.4569		2.3955	2.5809
O5	1.4298	2.4070	2.4569	2.3955		2.5809
H6	2.1251	3.1878	0.9753	2.5809	2.5809

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.239	O2	Cl1	O3	100.525
O2	Cl1	O4	115.233	O2	Cl1	O5	115.233
O3	Cl1	O4	104.932	O3	Cl1	O5	104.932
O4	Cl1	O5	113.803

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

using model chemistry: MP2/aug-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: MP2/aug-cc-pVTZ

States and conformations

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