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: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-46.895990
Energy at 298.15K-46.897311
HF Energy-46.895990
Nuclear repulsion energy67.918430
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 HF/CEP-31G*
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' 3320 2981 24.75      
2 A' 2563 2301 72.47      
3 A' 1610 1446 0.81      
4 A' 1430 1284 96.21      
5 A' 1166 1047 1.52      
6 A' 803 721 83.52      
7 A' 665 597 28.92      
8 A' 473 425 0.18      
9 A' 319 287 1.57      
10 A' 98 88 1.12      
11 A" 3392 3046 5.49      
12 A" 1306 1173 1.26      
13 A" 995 894 0.00      
14 A" 402 361 0.01      
15 A" 192 172 8.80      

Unscaled Zero Point Vibrational Energy (zpe) 9366.7 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 8411.3 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 HF/CEP-31G*
ABC
0.55012 0.03113 0.02963

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.184 0.213 0.000
C2 0.000 0.510 0.000
C3 -1.431 0.895 0.000
Cl4 2.792 -0.198 0.000
Cl5 -2.509 -0.546 0.000
H6 -1.666 1.470 0.887
H7 -1.666 1.470 -0.887

Atom - Atom Distances (Å)
  C1 C2 C3 Cl4 Cl5 H6 H7
C11.22032.70191.66033.77013.23863.2386
C21.22031.48172.88062.72232.11792.1179
C32.70191.48174.36221.80031.08291.0829
Cl41.66032.88064.36225.31314.84224.8422
Cl53.77012.72231.80035.31312.35872.3587
H63.23862.11791.08294.84222.35871.7740
H73.23862.11791.08294.84222.35871.7740

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 178.983 C2 C1 Cl4 179.748
C2 C3 Cl5 111.717 C2 C3 H6 110.369
C2 C3 H7 110.369 Cl5 C3 H6 107.148
Cl5 C3 H7 107.148 H6 C3 H7 109.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.209      
2 C -0.778      
3 C 0.202      
4 Cl 0.189      
5 Cl -0.165      
6 H 0.171      
7 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.339 1.849 0.000 1.880
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.552 -4.242 0.000
y -4.242 -39.519 0.000
z 0.000 0.000 -41.270
Traceless
 xyz
x -1.158 -4.242 0.000
y -4.242 1.892 0.000
z 0.000 0.000 -0.735
Polar
3z2-r2-1.470
x2-y2-2.033
xy-4.242
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.962 -0.291 0.000
y -0.291 5.429 0.000
z 0.000 0.000 3.742


<r2> (average value of r2) Å2
<r2> 156.155
(<r2>)1/2 12.496