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	hartrees
Energy at 0K	-761.384342
Energy at 298.15K	-761.388246
HF Energy	-761.384342
Nuclear repulsion energy	291.472699

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3720	3589	108.02
2	A'	1323	1277	189.93
3	A'	1202	1160	91.43
4	A'	1027	991	80.39
5	A'	709	684	164.11
6	A'	551	532	17.82
7	A'	530	511	3.53
8	A'	393	379	4.48
9	A"	1250	1206	227.20
10	A"	557	537	22.18
11	A"	399	385	11.78
12	A"	160	155	83.14

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.145	0.008	0.000
O2	-0.480	1.390	0.000
O3	1.520	0.094	0.000
O4	-0.480	-0.699	1.198
O5	-0.480	-0.699	-1.198
H6	1.819	-0.832	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4219	1.6676	1.4310	1.4310	2.1359
O2	1.4219		2.3835	2.4083	2.4083	3.1973
O3	1.6676	2.3835		2.4630	2.4630	0.9732
O4	1.4310	2.4083	2.4630		2.3959	2.5956
O5	1.4310	2.4083	2.4630	2.3959		2.5956
H6	2.1359	3.1973	0.9732	2.5956	2.5956

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.894	O2	Cl1	O3	100.674
O2	Cl1	O4	115.165	O2	Cl1	O5	115.165
O3	Cl1	O4	105.032	O3	Cl1	O5	105.032
O4	Cl1	O5	113.679

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

using model chemistry: B3LYP/6-31G(2df,p)

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	0.800
2	O	-0.240
3	O	-0.380
4	O	-0.258
5	O	-0.258
6	H	0.336

	x	y	z	Total
	1.836	-1.374	0.000	2.293
CHELPG
AIM
ESP

	x	y	z
x	4.562	-0.177	0.000
y	-0.177	4.469	0.000
z	0.000	0.000	4.215

<r²>	95.669
(<r²>)^1/2	9.781

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

using model chemistry: B3LYP/6-31G(2df,p)

States and conformations

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