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

using model chemistry: G3MP2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at G3MP2
 hartrees
Energy at 0K-118.228543
Energy at 298.15K-118.222444
HF Energy-117.636136
Nuclear repulsion energy75.417153
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 HF/6-31G*
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' 3329 3137 48.56      
2 A' 3261 3072 35.29      
3 A' 3220 3034 70.77      
4 A' 3152 2970 58.94      
5 A' 1639 1544 3.03      
6 A' 1633 1539 9.34      
7 A' 1568 1478 1.88      
8 A' 1288 1214 2.09      
9 A' 1143 1077 0.25      
10 A' 929 875 1.49      
11 A' 473 446 16.66      
12 A' 374 352 3.96      
13 A' 164 155 0.17      
14 A" 3261 3073 37.66      
15 A" 3217 3031 10.86      
16 A" 3147 2965 28.52      
17 A" 1630 1536 0.50      
18 A" 1622 1528 0.91      
19 A" 1565 1474 3.35      
20 A" 1491 1405 6.78      
21 A" 1210 1140 0.17      
22 A" 1036 976 0.20      
23 A" 1019 961 0.39      
24 A" 130 123 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20750.9 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 19551.5 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=FULL/6-31G*
ABC
1.24080 0.27980 0.24997

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.014 0.544 0.000
C2 0.014 -0.200 1.292
C3 0.014 -0.200 -1.292
H4 -0.323 1.575 0.000
H5 -0.955 -0.685 1.485
H6 -0.955 -0.685 -1.485
H7 0.767 -0.995 1.287
H8 0.222 0.460 2.138
H9 0.767 -0.995 -1.287
H10 0.222 0.460 -2.138

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49031.49031.08532.15722.15722.14262.15002.14262.1500
C21.49032.58362.22071.10102.98101.09551.09282.80153.4991
C31.49032.58362.22072.98101.10102.80153.49911.09551.0928
H41.08532.22072.22072.77672.77673.07432.47263.07432.4726
H52.15721.10102.98102.77672.97031.76111.76663.27803.9779
H62.15722.98101.10102.77672.97033.27803.97791.76111.7666
H72.14261.09552.80153.07431.76113.27801.77202.57333.7610
H82.15001.09283.49912.47261.76663.97791.77203.76104.2767
H92.14262.80151.09553.07433.27801.76112.57333.76101.7720
H102.15003.49911.09282.47263.97791.76663.76104.27671.7720

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 111.209 C1 C2 H7 111.707
C1 C2 H8 111.523 C1 C3 H6 111.209
C1 C3 H9 111.707 C1 C3 H10 111.523
C2 C1 C3 120.361 C2 C1 H4 117.881
C3 C1 H4 117.881 H5 C2 H7 106.920
H5 C2 H8 107.954 H6 C3 H9 106.920
H6 C3 H10 107.954 H7 C2 H8 107.296
H9 C3 H10 107.296
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability