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: CID/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 CID/3-21G
 hartrees
Energy at 0K-1028.975592
Energy at 298.15K-1028.976884
HF Energy-1028.635524
Nuclear repulsion energy233.770574
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 CID/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' 3529 3288 50.94      
2 A' 3278 3054 0.71      
3 A' 2307 2149 29.03      
4 A' 1344 1252 20.98      
5 A' 1032 962 61.76      
6 A' 787 733 36.22      
7 A' 685 638 40.18      
8 A' 459 428 5.07      
9 A' 266 248 0.34      
10 A' 228 212 4.49      
11 A" 1233 1149 28.64      
12 A" 767 715 21.84      
13 A" 759 707 177.75      
14 A" 481 448 0.30      
15 A" 157 147 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 8656.2 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 8064.1 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 CID/3-21G
ABC
0.09875 0.09609 0.05090

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.663 2.018 0.000
C2 -0.749 1.237 0.000
C3 0.390 0.353 0.000
Cl4 0.390 -0.741 1.528
Cl5 0.390 -0.741 -1.528
H6 -2.486 2.689 0.000
H7 1.341 0.870 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.20192.64363.76383.76381.06193.2156
C21.20191.44252.74752.74752.26372.1219
C32.64361.44251.87951.87953.70551.0815
Cl43.76382.74751.87953.05554.73052.4152
Cl53.76382.74751.87953.05554.73052.4152
H61.06192.26373.70554.73054.73054.2371
H73.21562.12191.08152.41522.41524.2371

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 177.288 C2 C1 H6 178.661
C2 C3 Cl4 110.916 C2 C3 Cl5 110.916
C2 C3 H7 113.660 Cl4 C3 Cl5 108.755
Cl4 C3 H7 106.156 Cl5 C3 H7 106.156
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability