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	hartrees
Energy at 0K	-759.333191
Energy at 298.15K	-759.337731
HF Energy	-759.333191
Nuclear repulsion energy	304.400965

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	4046	3668	207.44
2	A'	1488	1349	351.74
3	A'	1358	1231	119.83
4	A'	1213	1100	121.21
5	A'	923	837	218.54
6	A'	692	627	18.85
7	A'	671	608	43.67
8	A'	489	443	5.16
9	A"	1420	1287	400.93
10	A"	691	626	49.64
11	A"	508	460	13.69
12	A"	225	204	105.20

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.123	0.011	0.000
O2	-0.469	1.351	0.000
O3	1.448	0.075	0.000
O4	-0.469	-0.673	1.163
O5	-0.469	-0.673	-1.163
H6	1.764	-0.822	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.3838	1.5729	1.3928	1.3928	2.0627
O2	1.3838		2.3033	2.3345	2.3345	3.1157
O3	1.5729	2.3033		2.3640	2.3640	0.9507
O4	1.3928	2.3345	2.3640		2.3250	2.5218
O5	1.3928	2.3345	2.3640	2.3250		2.5218
H6	2.0627	3.1157	0.9507	2.5218	2.5218

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	107.053	O2	Cl1	O3	102.151
O2	Cl1	O4	114.447	O2	Cl1	O5	114.447
O3	Cl1	O4	105.551	O3	Cl1	O5	105.551
O4	Cl1	O5	113.166

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

using model chemistry: HF/Def2TZVPP

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	1.410
2	O	-0.441
3	O	-0.294
4	O	-0.463
5	O	-0.463
6	H	0.252

	x	y	z	Total
	2.508	-1.483	0.000	2.913
CHELPG
AIM
ESP

	x	y	z
x	3.875	-0.131	0.000
y	-0.131	4.001	0.000
z	0.000	0.000	3.803

<r²>	89.792
(<r²>)^1/2	9.476

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

using model chemistry: HF/Def2TZVPP

States and conformations

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