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	hartrees
Energy at 0K	-314.099966
Energy at 298.15K
HF Energy	-314.099966
Nuclear repulsion energy	122.697825

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3932	3538	177.64
2	A'	1395	1255	26.64
3	A'	732	659	12.06
4	A'	165	149	24.92
5	A'	124	112	5.78
6	A'	88	79	4.24
7	A'	69	62	0.86
8	A'	51	46	1.63
9	A"	178	161	158.65
10	A"	160	144	10.07
11	A"	32	29	0.88
12	A"	90i	81i	114.78

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.122	0.065	0.000
O2	-0.537	2.521	0.000
O3	1.638	-0.028	0.000
O4	-0.537	-1.255	1.785
O5	-0.537	-1.255	-1.785
H6	1.850	-0.970	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		2.4906	1.7624	2.2589	2.2589	2.2268
O2	2.4906		3.3507	4.1764	4.1764	4.2289
O3	1.7624	3.3507		3.0703	3.0703	0.9658
O4	2.2589	4.1764	3.0703		3.5708	2.9947
O5	2.2589	4.1764	3.0703	3.5708		2.9947
H6	2.2268	4.2289	0.9658	2.9947	2.9947

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	105.680	O2	Cl1	O3	102.619
O2	Cl1	O4	123.055	O2	Cl1	O5	123.055
O3	Cl1	O4	98.800	O3	Cl1	O5	98.800
O4	Cl1	O5	104.444

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

using model chemistry: HF/LANL2DZ

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	0.314
2	O	-0.038
3	O	-0.510
4	O	-0.113
5	O	-0.113
6	H	0.460

	x	y	z	Total
	1.390	-1.590	0.000	2.112
CHELPG
AIM
ESP

	x	y	z
x	4.878	-0.022	0.000
y	-0.022	3.998	0.000
z	0.000	0.000	3.641

<r²>	180.929
(<r²>)^1/2	13.451

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

using model chemistry: HF/LANL2DZ

States and conformations

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