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	hartrees
Energy at 0K	-760.108621
Energy at 298.15K	-760.112700
HF Energy	-759.148866
Nuclear repulsion energy	291.988725

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3839	3667	133.18
2	A'	1325	1265	240.58
3	A'	1219	1164	129.90
4	A'	1049	1002	99.67
5	A'	745	712	201.01
6	A'	571	546	28.77
7	A'	549	525	14.43
8	A'	406	388	4.72
9	A"	1251	1195	342.25
10	A"	580	554	50.33
11	A"	423	404	20.67
12	A"	205	196	85.98

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.143	0.012	0.000
O2	-0.479	1.392	0.000
O3	1.514	0.079	0.000
O4	-0.479	-0.696	1.197
O5	-0.479	-0.696	-1.197
H6	1.805	-0.843	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4204	1.6586	1.4307	1.4307	2.1271
O2	1.4204		2.3868	2.4069	2.4069	3.1954
O3	1.6586	2.3868		2.4510	2.4510	0.9667
O4	1.4307	2.4069	2.4510		2.3937	2.5827
O5	1.4307	2.4069	2.4510	2.3937		2.5827
H6	2.1271	3.1954	0.9667	2.5827	2.5827

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	105.175	O2	Cl1	O3	101.365
O2	Cl1	O4	115.172	O2	Cl1	O5	115.172
O3	Cl1	O4	104.762	O3	Cl1	O5	104.762
O4	Cl1	O5	113.553

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

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

States and conformations

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