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	hartrees
Energy at 0K	-761.316627
Energy at 298.15K	-761.320298
HF Energy	-761.316627
Nuclear repulsion energy	284.135293

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3699	3567	129.03
2	A'	1251	1206	155.38
3	A'	1134	1093	140.86
4	A'	949	915	92.45
5	A'	659	636	162.64
6	A'	507	489	21.48
7	A'	483	466	3.82
8	A'	356	343	4.54
9	A"	1142	1101	257.39
10	A"	513	494	26.05
11	A"	363	350	19.05
12	A"	163	157	88.44

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.150	0.009	0.000
O2	-0.493	1.425	0.000
O3	1.565	0.096	0.000
O4	-0.493	-0.718	1.227
O5	-0.493	-0.718	-1.227
H6	1.868	-0.835	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4563	1.7179	1.4673	1.4673	2.1878
O2	1.4563		2.4502	2.4695	2.4695	3.2681
O3	1.7179	2.4502		2.5308	2.5308	0.9786
O4	1.4673	2.4695	2.5308		2.4546	2.6634
O5	1.4673	2.4695	2.5308	2.4546		2.6634
H6	2.1878	3.2681	0.9786	2.6634	2.6634

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	105.137	O2	Cl1	O3	100.732
O2	Cl1	O4	115.277	O2	Cl1	O5	115.277
O3	Cl1	O4	104.953	O3	Cl1	O5	104.953
O4	Cl1	O5	113.535

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

using model chemistry: B3LYP/6-31+G**

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	1.366
2	O	-0.420
3	O	-0.498
4	O	-0.416
5	O	-0.416
6	H	0.384

	x	y	z	Total
	1.792	-1.500	0.000	2.337
CHELPG
AIM
ESP

	x	y	z
x	5.441	-0.082	0.000
y	-0.082	5.330	0.000
z	0.000	0.000	5.145

<r²>	100.791
(<r²>)^1/2	10.039

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

using model chemistry: B3LYP/6-31+G**

States and conformations

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