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	hartrees
Energy at 0K	-758.784274
Energy at 298.15K	-758.787972
HF Energy	-758.784274
Nuclear repulsion energy	285.177113

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3574	3574	119.59
2	A'	1261	1261	195.77
3	A'	1109	1109	88.00
4	A'	985	985	86.02
5	A'	692	692	159.82
6	A'	505	505	12.25
7	A'	492	492	16.41
8	A'	358	358	5.47
9	A"	1207	1207	234.87
10	A"	507	507	26.07
11	A"	369	369	15.32
12	A"	132	132	77.33

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.149	0.010	0.000
O2	-0.485	1.426	0.000
O3	1.547	0.097	0.000
O4	-0.485	-0.718	1.227
O5	-0.485	-0.718	-1.227
H6	1.811	-0.857	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4554	1.6982	1.4661	1.4661	2.1436
O2	1.4554		2.4282	2.4703	2.4703	3.2383
O3	1.6982	2.4282		2.5102	2.5102	0.9900
O4	1.4661	2.4703	2.5102		2.4549	2.6080
O5	1.4661	2.4703	2.5102	2.4549		2.6080
H6	2.1436	3.2383	0.9900	2.6080	2.6080

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	102.559	O2	Cl1	O3	100.417
O2	Cl1	O4	115.464	O2	Cl1	O5	115.464
O3	Cl1	O4	104.749	O3	Cl1	O5	104.749
O4	Cl1	O5	113.701

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

using model chemistry: LSDA/cc-pCVDZ

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	0.902
2	O	-0.275
3	O	-0.271
4	O	-0.289
5	O	-0.289
6	H	0.222

	x	y	z	Total
	1.645	-1.465	0.000	2.203
CHELPG
AIM
ESP

	x	y	z
x	4.203	-0.195	0.000
y	-0.195	4.361	0.000
z	0.000	0.000	3.991

<r²>	99.223
(<r²>)^1/2	9.961

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

using model chemistry: LSDA/cc-pCVDZ

States and conformations

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