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 CH3CHCH (1-propenyl radical)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-116.066466
Energy at 298.15K-116.070458
HF Energy-115.783750
Nuclear repulsion energy63.576006
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/3-21G*
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' 3218 3093 3.78      
2 A' 3104 2984 18.42      
3 A' 3034 2916 8.59      
4 A' 3024 2907 21.43      
5 A' 1648 1584 0.12      
6 A' 1565 1504 6.05      
7 A' 1470 1413 2.61      
8 A' 1340 1288 1.88      
9 A' 1140 1095 10.21      
10 A' 944 907 0.61      
11 A' 833 801 10.02      
12 A' 431 414 5.49      
13 A" 3079 2959 22.47      
14 A" 1568 1507 6.69      
15 A" 1113 1069 0.59      
16 A" 851 818 0.24      
17 A" 626 601 55.33      
18 A" 173 166 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 14579.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 14012.4 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/3-21G*
ABC
1.84666 0.31213 0.28126

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.462 0.000
C2 1.322 0.334 0.000
C3 -0.988 -0.710 0.000
H4 -0.454 1.463 0.000
H5 2.162 1.022 0.000
H6 -0.445 -1.664 0.000
H7 -1.632 -0.669 0.891
H8 -1.632 -0.669 -0.891

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8
C11.32801.53331.09902.23352.17232.17672.1767
C21.32802.53542.10421.08562.66763.24473.2447
C31.53332.53542.23773.59521.09801.10011.1001
H41.09902.10422.23772.65343.12712.59382.5938
H52.23351.08563.59522.65343.74324.24874.2487
H62.17232.66761.09803.12713.74321.78701.7870
H72.17673.24471.10012.59384.24871.78701.7822
H82.17673.24471.10012.59384.24871.78701.7822

picture of 1-propenyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 135.206 C1 C3 H6 110.198
C1 C3 H7 110.418 C1 C3 H8 110.418
C2 C1 C3 124.622 C2 C1 H4 119.926
C3 C1 H4 115.452 H6 C3 H7 108.778
H6 C3 H8 108.778 H7 C3 H8 108.196
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability