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	hartrees
Energy at 0K	-758.972535
Energy at 298.15K	-758.976403
HF Energy	-758.972535
Nuclear repulsion energy	290.999170

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3617	3582	131.79
2	A'	1310	1297	218.97
3	A'	1153	1142	84.57
4	A'	1028	1018	81.47
5	A'	705	698	184.50
6	A'	537	532	13.57
7	A'	523	518	9.78
8	A'	385	382	5.08
9	A"	1252	1240	250.13
10	A"	543	538	22.50
11	A"	396	392	13.14
12	A"	154	152	81.84

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.144	0.009	0.000
O2	-0.479	1.395	0.000
O3	1.516	0.094	0.000
O4	-0.479	-0.701	1.202
O5	-0.479	-0.701	-1.202
H6	1.807	-0.845	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4260	1.6617	1.4360	1.4360	2.1297
O2	1.4260		2.3815	2.4168	2.4168	3.2007
O3	1.6617	2.3815		2.4609	2.4609	0.9832
O4	1.4360	2.4168	2.4609		2.4040	2.5868
O5	1.4360	2.4168	2.4609	2.4040		2.5868
H6	2.1297	3.2007	0.9832	2.5868	2.5868

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.313	O2	Cl1	O3	100.666
O2	Cl1	O4	115.223	O2	Cl1	O5	115.223
O3	Cl1	O4	104.973	O3	Cl1	O5	104.973
O4	Cl1	O5	113.660

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

using model chemistry: SVWN/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	0.935
2	O	-0.294
3	O	-0.254
4	O	-0.309
5	O	-0.309
6	H	0.231

	x	y	z	Total
	1.813	-1.418	0.000	2.302
CHELPG
AIM
ESP

	x	y	z
x	4.681	-0.159	0.000
y	-0.159	4.774	0.000
z	0.000	0.000	4.482

<r²>	96.274
(<r²>)^1/2	9.812

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

using model chemistry: SVWN/cc-pVTZ

States and conformations

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