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	hartrees
Energy at 0K	-761.401575
Energy at 298.15K	-761.405666
HF Energy	-761.401575
Nuclear repulsion energy	293.200217

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3793	3626	134.05
2	A'	1356	1296	233.14
3	A'	1234	1180	100.21
4	A'	1069	1022	88.44
5	A'	743	710	198.75
6	A'	573	548	17.42
7	A'	559	534	10.82
8	A'	411	393	4.42
9	A"	1282	1226	283.84
10	A"	580	555	29.71
11	A"	422	404	13.61
12	A"	197	188	84.83

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.136	0.006	0.000
O2	-0.473	1.378	0.000
O3	1.482	0.097	0.000
O4	-0.473	-0.693	1.192
O5	-0.473	-0.693	-1.192
H6	1.805	-0.814	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4124	1.6199	1.4222	1.4222	2.1070
O2	1.4124		2.3367	2.3891	2.3891	3.1614
O3	1.6199	2.3367		2.4219	2.4219	0.9673
O4	1.4222	2.3891	2.4219		2.3833	2.5738
O5	1.4222	2.3891	2.4219	2.3833		2.5738
H6	2.1070	3.1614	0.9673	2.5738	2.5738

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	106.304	O2	Cl1	O3	100.596
O2	Cl1	O4	114.877	O2	Cl1	O5	114.877
O3	Cl1	O4	105.341	O3	Cl1	O5	105.341
O4	Cl1	O5	113.833

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

using model chemistry: wB97X-D/cc-pVTZ

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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Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
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Number	Element	Mulliken
1	Cl	1.114
2	O	-0.347
3	O	-0.255
4	O	-0.365
5	O	-0.365
6	H	0.219

	x	y	z	Total
	1.997	-1.414	0.000	2.446
CHELPG
AIM
ESP

	x	y	z
x	4.477	-0.143	0.000
y	-0.143	4.555	0.000
z	0.000	0.000	4.286

<r²>	95.077
(<r²>)^1/2	9.751

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

using model chemistry: wB97X-D/cc-pVTZ

States and conformations

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