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	hartrees
Energy at 0K	-761.296746
Energy at 298.15K	-761.300441
HF Energy	-761.296746
Nuclear repulsion energy	284.734287

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3640	3487	102.46
2	A'	1293	1239	144.68
3	A'	1165	1116	134.17
4	A'	970	929	91.06
5	A'	685	656	153.62
6	A'	515	494	21.42
7	A'	491	470	5.46
8	A'	359	344	4.71
9	A"	1176	1127	231.75
10	A"	521	499	28.53
11	A"	367	352	19.03
12	A"	157	150	86.79

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.149	0.010	0.000
O2	-0.491	1.424	0.000
O3	1.558	0.093	0.000
O4	-0.491	-0.717	1.226
O5	-0.491	-0.717	-1.226
H6	1.850	-0.844	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4550	1.7096	1.4653	1.4653	2.1743
O2	1.4550		2.4433	2.4672	2.4672	3.2596
O3	1.7096	2.4433		2.5211	2.5211	0.9816
O4	1.4653	2.4672	2.5211		2.4516	2.6453
O5	1.4653	2.4672	2.5211	2.4516		2.6453
H6	2.1743	3.2596	0.9816	2.6453	2.6453

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.513	O2	Cl1	O3	100.775
O2	Cl1	O4	115.310	O2	Cl1	O5	115.310
O3	Cl1	O4	104.872	O3	Cl1	O5	104.872
O4	Cl1	O5	113.558

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

using model chemistry: B3LYPultrafine/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	1.488
2	O	-0.433
3	O	-0.603
4	O	-0.448
5	O	-0.448
6	H	0.445

	x	y	z	Total
	1.811	-1.518	0.000	2.363
CHELPG
AIM
ESP

	x	y	z
x	4.466	-0.183	0.000
y	-0.183	4.418	0.000
z	0.000	0.000	4.075

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

using model chemistry: B3LYPultrafine/6-31G*

States and conformations

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