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	hartrees
Energy at 0K	-759.288656
Energy at 298.15K	-759.293119
HF Energy	-759.288656
Nuclear repulsion energy	301.567222

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	4037	3674	210.34
2	A'	1460	1329	286.96
3	A'	1345	1224	138.89
4	A'	1171	1066	124.41
5	A'	907	825	200.92
6	A'	668	608	20.06
7	A'	648	590	44.23
8	A'	473	431	4.82
9	A"	1380	1256	360.98
10	A"	668	608	50.43
11	A"	492	448	13.81
12	A"	212	193	103.62

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.125	0.012	0.000
O2	-0.468	1.354	0.000
O3	1.446	0.070	0.000
O4	-0.468	-0.674	1.162
O5	-0.468	-0.674	-1.162
H6	1.776	-0.822	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.3841	1.5725	1.3925	1.3925	2.0763
O2	1.3841		2.3043	2.3369	2.3369	3.1252
O3	1.5725	2.3043		2.3595	2.3595	0.9512
O4	1.3925	2.3369	2.3595		2.3247	2.5312
O5	1.3925	2.3369	2.3595	2.3247		2.5312
H6	2.0763	3.1252	0.9512	2.5312	2.5312

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	108.181	O2	Cl1	O3	102.217
O2	Cl1	O4	114.622	O2	Cl1	O5	114.622
O3	Cl1	O4	105.298	O3	Cl1	O5	105.298
O4	Cl1	O5	113.168

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

using model chemistry: HF/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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Number	Element	Mulliken
1	Cl	1.406
2	O	-0.440
3	O	-0.290
4	O	-0.461
5	O	-0.461
6	H	0.247

	x	y	z	Total
	2.543	-1.487	0.000	2.946
CHELPG
AIM
ESP

	x	y	z
x	3.849	-0.141	0.000
y	-0.141	3.937	0.000
z	0.000	0.000	3.708

<r²>	91.144
(<r²>)^1/2	9.547

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

using model chemistry: HF/cc-pVTZ

States and conformations

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