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	hartrees
Energy at 0K	-751.453474
Energy at 298.15K
HF Energy	-751.453474
Nuclear repulsion energy	234.686488

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3698	3266	33.59
2	A'	1028	908	31.24
3	A'	681	602	4.09
4	A'	603	532	13.21
5	A'	458	405	11.72
6	A'	200	177	2.71
7	A'	192	169	4.55
8	A'	154	136	0.60
9	A"	683	603	5.21
10	A"	203	179	8.04
11	A"	156	137	2.33
12	A"	108i	95i	38.96

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.182	0.018	0.000
O2	-0.580	1.761	0.000
O3	1.877	0.066	0.000
O4	-0.580	-0.872	1.502
O5	-0.580	-0.872	-1.502
H6	2.005	-0.965	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.7884	2.0597	1.7905	1.7905	2.3976
O2	1.7884		2.9856	3.0309	3.0309	3.7570
O3	2.0597	2.9856		3.0289	3.0289	1.0384
O4	1.7905	3.0309	3.0289		3.0045	2.9917
O5	1.7905	3.0309	3.0289	3.0045		2.9917
H6	2.3976	3.7570	1.0384	2.9917	2.9917

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	95.743	O2	Cl1	O3	101.535
O2	Cl1	O4	115.753	O2	Cl1	O5	115.753
O3	Cl1	O4	103.534	O3	Cl1	O5	103.534
O4	Cl1	O5	114.073

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

using model chemistry: HSEh1PBE/STO-3G

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	0.447
2	O	-0.135
3	O	-0.172
4	O	-0.148
5	O	-0.148
6	H	0.157

	x	y	z	Total
	0.761	-1.060	0.000	1.305
CHELPG
AIM
ESP

	x	y	z
x	4.815	-0.481	0.000
y	-0.481	4.437	0.000
z	0.000	0.000	3.823

<r²>	134.206
(<r²>)^1/2	11.585

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

using model chemistry: HSEh1PBE/STO-3G

States and conformations

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