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 CH2ClCCCl (1,3-dichloropropyne)

using model chemistry: CISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CISD/3-21G*
 hartrees
Energy at 0K-1029.334403
Energy at 298.15K-1029.335808
HF Energy-1028.850951
Nuclear repulsion energy215.438743
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 CISD/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' 3188 2979 5.61      
2 A' 2456 2295 45.45      
3 A' 1587 1483 2.66      
4 A' 1388 1297 37.20      
5 A' 1110 1037 6.36      
6 A' 744 695 56.52      
7 A' 651 609 26.35      
8 A' 507 474 0.74      
9 A' 320 299 0.81      
10 A' 102 95 1.15      
11 A" 3241 3028 0.20      
12 A" 1308 1222 0.07      
13 A" 970 906 0.86      
14 A" 483 452 0.72      
15 A" 197 184 6.88      

Unscaled Zero Point Vibrational Energy (zpe) 9125.9 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 8527.3 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 CISD/3-21G*
ABC
0.54622 0.03154 0.02999

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.167 0.235 0.000
C2 0.000 0.507 0.000
C3 -1.415 0.877 0.000
Cl4 2.775 -0.151 0.000
Cl5 -2.491 -0.591 0.000
H6 -1.668 1.448 0.889
H7 -1.668 1.448 -0.889

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.19822.66081.65373.74983.20973.2097
C21.19821.46282.85192.72212.11192.1119
C32.66081.46284.31451.81991.08681.0868
Cl41.65372.85194.31455.28404.80544.8054
Cl53.74982.72211.81995.28402.37172.3717
H63.20972.11191.08684.80542.37171.7787
H73.20972.11191.08684.80542.37171.7787

picture of 1,3-dichloropropyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 178.476 C2 C1 Cl4 179.622
C2 C3 Cl5 111.576 C2 C3 H6 110.995
C2 C3 H7 110.995 Cl5 C3 H6 106.629
Cl5 C3 H7 106.629 H6 C3 H7 109.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability