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	hartrees
Energy at 0K	-759.059448
Energy at 298.15K	-759.063727
HF Energy	-759.059448
Nuclear repulsion energy	296.640550

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3972	3569	217.53
2	A'	1454	1307	191.40
3	A'	1310	1177	207.16
4	A'	1100	988	145.86
5	A'	879	790	163.03
6	A'	628	564	22.38
7	A'	612	550	50.61
8	A'	444	399	4.85
9	A"	1310	1177	334.10
10	A"	632	568	60.95
11	A"	464	417	19.45
12	A"	197	177	114.35

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.129	0.014	0.000
O2	-0.473	1.378	0.000
O3	1.470	0.069	0.000
O4	-0.473	-0.687	1.182
O5	-0.473	-0.687	-1.182
H6	1.794	-0.834	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4068	1.5997	1.4162	1.4162	2.1017
O2	1.4068		2.3428	2.3789	2.3789	3.1676
O3	1.5997	2.3428		2.3966	2.3966	0.9596
O4	1.4162	2.3789	2.3966		2.3630	2.5612
O5	1.4162	2.3789	2.3966	2.3630		2.5612
H6	2.1017	3.1676	0.9596	2.5612	2.5612

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	107.778	O2	Cl1	O3	102.191
O2	Cl1	O4	114.845	O2	Cl1	O5	114.845
O3	Cl1	O4	105.082	O3	Cl1	O5	105.082
O4	Cl1	O5	113.082

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

using model chemistry: HF/6-31G*

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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Number	Element	Mulliken
1	Cl	1.915
2	O	-0.558
3	O	-0.704
4	O	-0.581
5	O	-0.581
6	H	0.510

	x	y	z	Total
	2.558	-1.632	0.000	3.034
CHELPG
AIM
ESP

	x	y	z
x	3.670	-0.158	0.000
y	-0.158	3.704	0.000
z	0.000	0.000	3.436

<r²>	93.836
(<r²>)^1/2	9.687

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

using model chemistry: HF/6-31G*

States and conformations

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