return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP4/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at MP4/cc-pVDZ
 hartrees
Energy at 0K-118.116433
Energy at 298.15K-118.122656
HF Energy-117.644679
Nuclear repulsion energy74.759505
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 MP4/cc-pVDZ
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' 3191 3086        
2 A' 3134 3030        
3 A' 3077 2976        
4 A' 2994 2895        
5 A' 1481 1432        
6 A' 1474 1425        
7 A' 1406 1360        
8 A' 1178 1139        
9 A' 1036 1002        
10 A' 897 867        
11 A' 428 414        
12 A' 354 342        
13 A' 152 147        
14 A" 3135 3031        
15 A" 3078 2976        
16 A" 2991 2892        
17 A" 1473 1424        
18 A" 1464 1415        
19 A" 1420 1373        
20 A" 1358 1313        
21 A" 1160 1121        
22 A" 933 902        
23 A" 929 899        
24 A" 118 114        

Unscaled Zero Point Vibrational Energy (zpe) 19430.9 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 18787.7 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 MP4/cc-pVDZ
ABC
1.21344 0.27496 0.24552

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 0.549 0.000
C2 -0.015 -0.202 1.303
C3 -0.015 -0.202 -1.303
H4 0.326 1.594 0.000
H5 -0.770 -1.013 1.295
H6 -0.770 -1.013 -1.295
H7 0.970 -0.685 1.498
H8 -0.229 0.462 2.160
H9 0.970 -0.685 -1.498
H10 -0.229 0.462 -2.160

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.50361.50361.09882.16522.16522.17672.17232.17672.1723
C21.50362.60542.24431.10832.82431.11411.10533.00823.5322
C31.50362.60542.24432.82431.10833.00823.53221.11411.1053
H41.09882.24432.24433.11043.11042.80222.50082.80222.5008
H52.16521.10832.82433.11042.59011.78151.79363.30693.7956
H62.16522.82431.10833.11042.59013.30693.79561.78151.7936
H72.17671.11413.00822.80221.78153.30691.78642.99684.0171
H82.17231.10533.53222.50081.79363.79561.78644.01714.3199
H92.17673.00821.11412.80223.30691.78152.99684.01711.7864
H102.17233.53221.10532.50083.79561.79364.01714.31991.7864

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 111.084 C1 C2 H7 111.649
C1 C2 H8 111.840 C1 C3 H6 111.084
C1 C3 H9 111.649 C1 C3 H10 111.840
C2 C1 C3 120.082 C2 C1 H4 118.340
C3 C1 H4 118.340 H5 C2 H7 106.568
H5 C2 H8 108.250 H6 C3 H9 106.568
H6 C3 H10 108.250 H7 C2 H8 107.203
H9 C3 H10 107.203
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability