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 CHCl2CCH (3,3-dichloropropyne)

using model chemistry: MP2/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/STO-3G
 hartrees
Energy at 0K-1022.651396
Energy at 298.15K-1022.652454
HF Energy-1022.422739
Nuclear repulsion energy233.523599
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 MP2/STO-3G
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' 3723 3246 115.06      
2 A' 3417 2979 1.26      
3 A' 2254 1965 55.76      
4 A' 1380 1203 35.71      
5 A' 1059 924 52.37      
6 A' 776 677 27.58      
7 A' 754 657 2.20      
8 A' 487 424 3.59      
9 A' 273 238 1.55      
10 A' 212 185 3.05      
11 A" 1326 1156 25.88      
12 A" 936 816 78.89      
13 A" 752 656 9.71      
14 A" 496 432 0.98      
15 A" 150 130 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 8996.6 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 7844.2 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/STO-3G
ABC
0.10015 0.09418 0.05072

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.718 2.019 0.000
C2 -0.765 1.252 0.000
C3 0.402 0.314 0.000
Cl4 0.402 -0.738 1.517
Cl5 0.402 -0.738 -1.517
H6 -2.559 2.702 0.000
H7 1.371 0.868 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.22332.72033.79383.79381.08283.2969
C21.22331.49702.76062.76062.30622.1705
C32.72031.49701.84581.84583.80321.1161
Cl43.79382.76061.84583.03324.78472.4119
Cl53.79382.76061.84583.03324.78472.4119
H61.08282.30623.80324.78474.78474.3367
H73.29692.17051.11612.41192.41194.3367

picture of 3,3-dichloropropyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 179.974 C2 C1 H6 179.705
C2 C3 Cl4 110.915 C2 C3 Cl5 110.915
C2 C3 H7 111.495 Cl4 C3 Cl5 110.501
Cl4 C3 H7 106.417 Cl5 C3 H7 106.417
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability