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All results from a given calculation for CH3CHCH3 (Isopropyl radical)

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-118.109096
Energy at 298.15K-118.115383
HF Energy-117.676468
Nuclear repulsion energy75.662561
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/TZVP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3244 3075 25.97      
2 A' 3171 3006 19.19      
3 A' 3113 2951 42.03      
4 A' 3030 2872 35.15      
5 A' 1519 1440 4.91      
6 A' 1501 1423 15.27      
7 A' 1440 1365 4.16      
8 A' 1205 1142 1.60      
9 A' 1064 1009 0.47      
10 A' 907 860 1.53      
11 A' 446 423 23.90      
12 A' 365 346 4.47      
13 A' 169 160 0.16      
14 A" 3172 3007 20.40      
15 A" 3114 2952 5.33      
16 A" 3028 2870 24.91      
17 A" 1507 1429 0.57      
18 A" 1490 1412 2.28      
19 A" 1443 1368 8.77      
20 A" 1394 1321 2.21      
21 A" 1175 1114 0.13      
22 A" 954 905 0.49      
23 A" 952 903 0.56      
24 A" 106 100 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19754.5 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 18725.3 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/TZVP
ABC
1.24003 0.28155 0.25124

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 0.547 0.000
C2 -0.015 -0.200 1.288
C3 -0.015 -0.200 -1.288
H4 0.327 1.573 0.000
H5 -0.771 -0.988 1.283
H6 -0.771 -0.988 -1.283
H7 0.951 -0.692 1.469
H8 -0.210 0.454 2.137
H9 0.951 -0.692 -1.469
H10 -0.210 0.454 -2.137

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.48881.48881.08162.13902.13902.14992.14822.14992.1482
C21.48882.57602.21791.09252.79381.09831.08952.96183.4926
C31.48882.57602.21792.79381.09252.96183.49261.09831.0895
H41.08162.21792.21793.06803.06802.77032.47142.77032.4714
H52.13901.09252.79383.06802.56661.75691.76773.25963.7544
H62.13902.79381.09253.06802.56663.25963.75441.75691.7677
H72.14991.09832.96182.77031.75693.25961.76242.93713.9574
H82.14821.08953.49262.47141.76773.75441.76243.95744.2746
H92.14992.96181.09832.77033.25961.75692.93713.95741.7624
H102.14823.49261.08952.47143.75441.76773.95744.27461.7624

picture of Isopropyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.991 C1 C2 H7 111.515
C1 C2 H8 111.915 C1 C3 H6 110.991
C1 C3 H9 111.515 C1 C3 H10 111.915
C2 C1 C3 119.789 C2 C1 H4 118.422
C3 C1 H4 118.422 H5 C2 H7 106.638
H5 C2 H8 108.216 H6 C3 H9 106.638
H6 C3 H10 108.216 H7 C2 H8 107.327
H9 C3 H10 107.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability