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: 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-1022.652000
Energy at 298.15K-1022.652931
HF Energy-1022.426689
Nuclear repulsion energy209.988362
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' 3395 2960 0.76      
2 A' 2418 2108 34.57      
3 A' 1650 1439 0.53      
4 A' 1424 1241 54.08      
5 A' 1170 1020 8.91      
6 A' 869 758 22.48      
7 A' 639 557 14.11      
8 A' 451 394 0.18      
9 A' 272 238 0.27      
10 A' 96 83 1.25      
11 A" 3508 3059 0.95      
12 A" 1310 1142 0.43      
13 A" 996 868 0.01      
14 A" 361 315 1.44      
15 A" 180 157 0.86      

Unscaled Zero Point Vibrational Energy (zpe) 9368.7 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 8168.6 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
0.51751 0.02999 0.02850

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 1.181 0.212 0.000
C2 0.000 0.535 0.000
C3 -1.445 0.934 0.000
Cl4 2.851 -0.242 0.000
Cl5 -2.558 -0.532 0.000
H6 -1.691 1.531 0.904
H7 -1.691 1.531 -0.904

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.22442.72351.73023.81263.28723.2872
C21.22441.49912.95462.77202.16072.1607
C32.72351.49914.45371.84091.11121.1112
Cl41.73022.95464.45375.41684.95834.9583
Cl53.81262.77201.84095.41682.41392.4139
H63.28722.16071.11124.95832.41391.8088
H73.28722.16071.11124.95832.41391.8088

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 179.875 C2 C1 Cl4 179.881
C2 C3 Cl5 111.774 C2 C3 H6 110.865
C2 C3 H7 110.865 Cl5 C3 H6 107.105
Cl5 C3 H7 107.105 H6 C3 H7 108.962
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability