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

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-118.113655
Energy at 298.15K-118.119926
HF Energy-117.649121
Nuclear repulsion energy75.354024
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 QCISD/6-31+G**
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' 3238 3061 32.33      
2 A' 3171 2998 23.51      
3 A' 3113 2943 50.89      
4 A' 3035 2869 46.30      
5 A' 1539 1455 4.58      
6 A' 1526 1442 12.75      
7 A' 1465 1385 2.73      
8 A' 1215 1149 1.23      
9 A' 1072 1013 0.61      
10 A' 907 858 1.49      
11 A' 426 403 23.12      
12 A' 359 339 8.49      
13 A' 157 148 0.28      
14 A" 3172 2999 27.02      
15 A" 3113 2943 7.31      
16 A" 3032 2866 28.09      
17 A" 1529 1446 0.96      
18 A" 1516 1433 1.04      
19 A" 1467 1387 6.61      
20 A" 1411 1334 3.50      
21 A" 1177 1113 0.01      
22 A" 970 917 0.79      
23 A" 961 909 0.13      
24 A" 122 115 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 19845.6 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 18762.0 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 QCISD/6-31+G**
ABC
1.23707 0.27807 0.24831

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.013 0.545 0.000
C2 -0.013 -0.201 1.297
C3 -0.013 -0.201 -1.297
H4 0.296 1.584 0.000
H5 -0.772 -0.989 1.295
H6 -0.772 -0.989 -1.295
H7 0.952 -0.694 1.482
H8 -0.209 0.460 2.142
H9 0.952 -0.694 -1.482
H10 -0.209 0.460 -2.142

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.49651.49651.08392.14632.14632.15952.15312.15952.1531
C21.49652.59432.22821.09402.81371.09941.09092.98313.5080
C31.49652.59432.22822.81371.09402.98313.50801.09941.0909
H41.08392.22822.22823.07223.07222.79582.47162.79582.4716
H52.14631.09402.81373.07222.59031.75931.77033.28233.7727
H62.14632.81371.09403.07222.59033.28233.77271.75931.7703
H72.15951.09942.98312.79581.75933.28231.76542.96433.9772
H82.15311.09093.50802.47161.77033.77271.76543.97724.2848
H92.15952.98311.09942.79583.28231.75932.96433.97721.7654
H102.15313.50801.09092.47163.77271.77033.97724.28481.7654

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 110.947 C1 C2 H7 111.676
C1 C2 H8 111.682 C1 C3 H6 110.947
C1 C3 H9 111.676 C1 C3 H10 111.682
C2 C1 C3 120.181 C2 C1 H4 118.552
C3 C1 H4 118.552 H5 C2 H7 106.656
H5 C2 H8 108.242 H6 C3 H9 106.656
H6 C3 H10 108.242 H7 C2 H8 107.411
H9 C3 H10 107.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability