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	hartrees
Energy at 0K	-760.855947
Energy at 298.15K	-760.859812
HF Energy	-760.855947
Nuclear repulsion energy	288.373558

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3763	3595	142.31
2	A'	1303	1245	219.43
3	A'	1188	1135	109.09
4	A'	1017	972	95.43
5	A'	713	681	180.74
6	A'	536	512	17.17
7	A'	521	497	14.02
8	A'	379	362	4.80
9	A"	1223	1169	283.59
10	A"	542	517	31.40
11	A"	388	371	19.32
12	A"	174	166	91.11

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.144	0.010	0.000
O2	-0.485	1.408	0.000
O3	1.530	0.092	0.000
O4	-0.485	-0.709	1.212
O5	-0.485	-0.709	-1.212
H6	1.838	-0.833	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4393	1.6763	1.4496	1.4496	2.1534
O2	1.4393		2.4066	2.4396	2.4396	3.2272
O3	1.6763	2.4066		2.4838	2.4838	0.9745
O4	1.4496	2.4396	2.4838		2.4239	2.6223
O5	1.4496	2.4396	2.4838	2.4239		2.6223
H6	2.1534	3.2272	0.9745	2.6223	2.6223

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	105.584	O2	Cl1	O3	100.873
O2	Cl1	O4	115.230	O2	Cl1	O5	115.230
O3	Cl1	O4	105.000	O3	Cl1	O5	105.000
O4	Cl1	O5	113.452

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

using model chemistry: PBE1PBE/6-31+G**

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	1.369
2	O	-0.422
3	O	-0.504
4	O	-0.419
5	O	-0.419
6	H	0.394

	x	y	z	Total
	1.924	-1.506	0.000	2.443
CHELPG
AIM
ESP

	x	y	z
x	5.055	-0.086	0.000
y	-0.086	5.088	0.000
z	0.000	0.000	4.904

<r²>	98.178
(<r²>)^1/2	9.908

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

using model chemistry: PBE1PBE/6-31+G**

States and conformations

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