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	hartrees
Energy at 0K	-760.666848
Energy at 298.15K	-760.671047
HF Energy	-759.318699
Nuclear repulsion energy	296.342404

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3757	3562	129.45
2	A'	1419	1345	264.51
3	A'	1231	1167	85.75
4	A'	1134	1075	71.30
5	A'	749	710	231.68
6	A'	595	564	14.67
7	A'	582	552	12.73
8	A'	428	406	4.72
9	A"	1367	1296	298.48
10	A"	601	570	29.33
11	A"	441	419	13.72
12	A"	207	197	83.54

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.142	0.009	0.000
O2	-0.470	1.370	0.000
O3	1.489	0.090	0.000
O4	-0.470	-0.687	1.181
O5	-0.470	-0.687	-1.181
H6	1.780	-0.836	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4003	1.6326	1.4093	1.4093	2.0991
O2	1.4003		2.3400	2.3723	2.3723	3.1511
O3	1.6326	2.3400		2.4153	2.4153	0.9708
O4	1.4093	2.3723	2.4153		2.3611	2.5447
O5	1.4093	2.3723	2.4153	2.3611		2.5447
H6	2.0991	3.1511	0.9708	2.5447	2.5447

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.588	O2	Cl1	O3	100.703
O2	Cl1	O4	115.202	O2	Cl1	O5	115.202
O3	Cl1	O4	104.890	O3	Cl1	O5	104.890
O4	Cl1	O5	113.793

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

using model chemistry: MP2=FULL/cc-pV(T+d)Z

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=FULL/cc-pV(T+d)Z

States and conformations

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