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	hartrees
Energy at 0K	-761.407809
Energy at 298.15K	-761.411936
HF Energy	-761.407809
Nuclear repulsion energy	297.141587

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3772	3772	166.31
2	A'	1392	1392	273.23
3	A'	1244	1244	92.73
4	A'	1116	1116	90.95
5	A'	797	797	204.85
6	A'	608	608	9.60
7	A'	596	596	27.35
8	A'	433	433	4.74
9	A"	1332	1332	307.96
10	A"	613	613	33.46
11	A"	444	444	9.97
12	A"	134	134	96.28

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.135	0.011	0.000
O2	-0.472	1.369	0.000
O3	1.478	0.079	0.000
O4	-0.472	-0.684	1.178
O5	-0.472	-0.684	-1.178
H6	1.791	-0.840	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.3994	1.6147	1.4085	1.4085	2.1054
O2	1.3994		2.3382	2.3670	2.3670	3.1625
O3	1.6147	2.3382		2.4028	2.4028	0.9713
O4	1.4085	2.3670	2.4028		2.3558	2.5556
O5	1.4085	2.3670	2.4028	2.3558		2.5556
H6	2.1054	3.1625	0.9713	2.5556	2.5556

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	106.337	O2	Cl1	O3	101.508
O2	Cl1	O4	114.910	O2	Cl1	O5	114.910
O3	Cl1	O4	105.065	O3	Cl1	O5	105.065
O4	Cl1	O5	113.501

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

using model chemistry: M06-2X/cc-pV(T+d)Z

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	1.092
2	O	-0.346
3	O	-0.287
4	O	-0.364
5	O	-0.364
6	H	0.269

	x	y	z	Total
	2.104	-1.448	0.000	2.554
CHELPG
AIM
ESP

	x	y	z
x	4.287	-0.158	0.000
y	-0.158	4.383	0.000
z	0.000	0.000	4.117

<r²>	93.171
(<r²>)^1/2	9.653

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

using model chemistry: M06-2X/cc-pV(T+d)Z

States and conformations

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