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=FULL/6-31+G**

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=FULL/6-31+G**
 hartrees
Energy at 0K-1034.347957
Energy at 298.15K-1034.349019
HF Energy-1033.650520
Nuclear repulsion energy240.429099
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=FULL/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' 3530 3316 62.80      
2 A' 3212 3016 0.40      
3 A' 2162 2031 17.68      
4 A' 1307 1228 33.08      
5 A' 1030 968 47.65      
6 A' 734 689 37.81      
7 A' 622 584 34.03      
8 A' 446 419 2.97      
9 A' 279 262 0.59      
10 A' 193 181 2.46      
11 A" 1294 1215 25.49      
12 A" 803 754 175.62      
13 A" 613 576 26.67      
14 A" 437 411 0.12      
15 A" 135 127 1.11      

Unscaled Zero Point Vibrational Energy (zpe) 8398.6 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 7887.9 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=FULL/6-31+G**
ABC
0.10722 0.09874 0.05355

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.636 2.027 0.000
C2 -0.737 1.202 0.000
C3 0.384 0.286 0.000
Cl4 0.384 -0.724 1.468
Cl5 0.384 -0.724 -1.468
H6 -2.447 2.715 0.000
H7 1.324 0.828 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.22042.66733.71573.71571.06333.1943
C21.22041.44792.66872.66872.28332.0951
C32.66731.44791.78171.78173.73061.0856
Cl43.71572.66871.78172.93554.69042.3343
Cl53.71572.66871.78172.93554.69042.3343
H61.06332.28333.73064.69044.69044.2172
H73.19432.09511.08562.33432.33434.2172

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 176.737 C2 C1 H6 177.791
C2 C3 Cl4 111.026 C2 C3 Cl5 111.026
C2 C3 H7 110.758 Cl4 C3 Cl5 110.931
Cl4 C3 H7 106.455 Cl5 C3 H7 106.455
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability