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	hartrees
Energy at 0K	-758.752490
Energy at 298.15K	-758.756160
HF Energy	-758.752490
Nuclear repulsion energy	286.527096

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3616	3548	115.80
2	A'	1289	1265	197.04
3	A'	1141	1120	89.81
4	A'	1003	984	85.84
5	A'	703	690	161.94
6	A'	511	502	14.96
7	A'	494	485	12.40
8	A'	358	351	5.52
9	A"	1228	1205	227.23
10	A"	516	506	26.34
11	A"	364	357	18.33
12	A"	129	127	86.84

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.147	0.009	0.000
O2	-0.484	1.419	0.000
O3	1.536	0.098	0.000
O4	-0.484	-0.716	1.222
O5	-0.484	-0.716	-1.222
H6	1.829	-0.845	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4492	1.6852	1.4600	1.4600	2.1524
O2	1.4492		2.4136	2.4593	2.4593	3.2362
O3	1.6852	2.4136		2.4970	2.4970	0.9871
O4	1.4600	2.4593	2.4970		2.4430	2.6189
O5	1.4600	2.4593	2.4970	2.4430		2.6189
H6	2.1524	3.2362	0.9871	2.6189	2.6189

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.248	O2	Cl1	O3	100.442
O2	Cl1	O4	115.421	O2	Cl1	O5	115.421
O3	Cl1	O4	104.877	O3	Cl1	O5	104.877
O4	Cl1	O5	113.579

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

using model chemistry: LSDA/6-31G**

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	1.289
2	O	-0.377
3	O	-0.511
4	O	-0.390
5	O	-0.390
6	H	0.380

	x	y	z	Total
	1.804	-1.525	0.000	2.362
CHELPG
AIM
ESP

	x	y	z
x	4.369	-0.188	0.000
y	-0.188	4.483	0.000
z	0.000	0.000	4.142

<r²>	98.570
(<r²>)^1/2	9.928

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

using model chemistry: LSDA/6-31G**

States and conformations

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