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	hartrees
Energy at 0K	-761.387214
Energy at 298.15K	-761.390615
HF Energy	-761.387214
Nuclear repulsion energy	276.987502

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3520	3511	59.83
2	A'	1189	1186	112.06
3	A'	1041	1039	143.16
4	A'	855	853	81.21
5	A'	583	581	124.64
6	A'	465	464	19.61
7	A'	418	417	0.87
8	A'	321	320	5.00
9	A"	1037	1034	214.79
10	A"	467	466	18.09
11	A"	328	327	27.11
12	A"	183	183	83.26

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.167	0.007	0.000
O2	-0.508	1.449	0.000
O3	1.636	0.110	0.000
O4	-0.508	-0.735	1.253
O5	-0.508	-0.735	-1.253
H6	1.936	-0.830	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4816	1.8055	1.4950	1.4950	2.2630
O2	1.4816		2.5274	2.5172	2.5172	3.3411
O3	1.8055	2.5274		2.6223	2.6223	0.9863
O4	1.4950	2.5172	2.6223		2.5051	2.7476
O5	1.4950	2.5172	2.6223	2.5051		2.7476
H6	2.2630	3.3411	0.9863	2.7476	2.7476

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	104.445	O2	Cl1	O3	100.038
O2	Cl1	O4	115.481	O2	Cl1	O5	115.481
O3	Cl1	O4	104.829	O3	Cl1	O5	104.829
O4	Cl1	O5	113.825

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

using model chemistry: BLYP/6-311G*

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	1.043
2	O	-0.304
3	O	-0.519
4	O	-0.319
5	O	-0.319
6	H	0.417

	x	y	z	Total
	1.451	-1.574	0.000	2.141
CHELPG
AIM
ESP

	x	y	z
x	5.118	-0.187	0.000
y	-0.187	4.793	0.000
z	0.000	0.000	4.427

<r²>	105.219
(<r²>)^1/2	10.258

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

using model chemistry: BLYP/6-311G*

States and conformations

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