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	hartrees
Energy at 0K	-761.523640
Energy at 298.15K	-761.527479
HF Energy	-761.523640
Nuclear repulsion energy	289.104569

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3686	3569	106.07
2	A'	1296	1255	195.12
3	A'	1179	1142	101.52
4	A'	1004	972	86.31
5	A'	685	664	175.38
6	A'	535	518	19.80
7	A'	512	496	2.25
8	A'	379	367	4.78
9	A"	1219	1181	253.31
10	A"	543	525	21.98
11	A"	388	376	13.07
12	A"	161	156	79.59

Atom	x (Å)	y (Å)	z (Å)
Cl1	-0.139	0.004	0.000
O2	-0.475	1.383	0.000
O3	1.493	0.108	0.000
O4	-0.475	-0.699	1.199
O5	-0.475	-0.699	-1.199
H6	1.824	-0.806	0.000

	Cl1	O2	O3	O4	O5	H6
Cl1		1.4199	1.6349	1.4303	1.4303	2.1236
O2	1.4199		2.3447	2.4030	2.4030	3.1750
O3	1.6349	2.3447		2.4421	2.4421	0.9729
O4	1.4303	2.4030	2.4421		2.3989	2.5958
O5	1.4303	2.4030	2.4421	2.3989		2.5958
H6	2.1236	3.1750	0.9729	2.5958	2.5958

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
Cl1	O3	H6	106.249	O2	Cl1	O3	100.028
O2	Cl1	O4	114.939	O2	Cl1	O5	114.939
O3	Cl1	O4	105.440	O3	Cl1	O5	105.440
O4	Cl1	O5	113.985

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

using model chemistry: TPSSh/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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Number	Element	Mulliken
1	Cl	1.061
2	O	-0.331
3	O	-0.274
4	O	-0.345
5	O	-0.345
6	H	0.234

	x	y	z	Total
	1.761	-1.381	0.000	2.238
CHELPG
AIM
ESP

	x	y	z
x	4.768	-0.150	0.000
y	-0.150	4.748	0.000
z	0.000	0.000	4.463

<r²>	97.269
(<r²>)^1/2	9.862

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

using model chemistry: TPSSh/cc-pVTZ

States and conformations

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