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	hartrees
Energy at 0K	-761.369218
Energy at 298.15K	-761.373101
HF Energy	-761.369218
Nuclear repulsion energy	287.012788

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3762	3589	135.58
2	A'	1277	1218	193.24
3	A'	1169	1115	131.23
4	A'	991	945	98.49
5	A'	702	670	179.27
6	A'	531	507	21.83
7	A'	514	490	12.04
8	A'	379	362	4.62
9	A"	1193	1138	290.40
10	A"	535	511	35.79
11	A"	394	376	17.55
12	A"	192	183	86.33

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.145	0.012	0.000
O2	-0.487	1.416	0.000
O3	1.541	0.085	0.000
O4	-0.487	-0.710	1.218
O5	-0.487	-0.710	-1.218
H6	1.830	-0.842	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4454	1.6885	1.4559	1.4559	2.1524
O2	1.4454		2.4263	2.4498	2.4498	3.2358
O3	1.6885	2.4263		2.4957	2.4957	0.9710
O4	1.4559	2.4498	2.4957		2.4352	2.6211
O5	1.4559	2.4498	2.4957	2.4352		2.6211
H6	2.1524	3.2358	0.9710	2.6211	2.6211

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.820	O2	Cl1	O3	101.188
O2	Cl1	O4	115.212	O2	Cl1	O5	115.212
O3	Cl1	O4	104.825	O3	Cl1	O5	104.825
O4	Cl1	O5	113.511

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

using model chemistry: mPW1PW91/TZVP

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	0.720
2	O	-0.220
3	O	-0.332
4	O	-0.240
5	O	-0.240
6	H	0.312

	x	y	z	Total
	1.836	-1.512	0.000	2.378
CHELPG
AIM
ESP

	x	y	z
x	4.725	-0.135	0.000
y	-0.135	4.836	0.000
z	0.000	0.000	4.570

<r²>	98.927
(<r²>)^1/2	9.946

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

using model chemistry: mPW1PW91/TZVP

States and conformations

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