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 C4H3ClO (Furan, 2-chloro)

using model chemistry: HSEh1PBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HSEh1PBE/6-31G
 hartrees
Energy at 0K-689.130141
Energy at 298.15K-689.133959
HF Energy-689.130141
Nuclear repulsion energy261.714519
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 HSEh1PBE/6-31G
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' 3380 3233 0.54      
2 A' 3347 3202 0.73      
3 A' 3321 3177 1.95      
4 A' 1637 1566 27.05      
5 A' 1540 1473 53.10      
6 A' 1417 1355 12.06      
7 A' 1274 1218 10.76      
8 A' 1204 1151 46.68      
9 A' 1157 1107 11.04      
10 A' 1078 1031 14.16      
11 A' 1047 1001 23.08      
12 A' 928 888 32.97      
13 A' 909 869 4.67      
14 A' 480 459 5.12      
15 A' 301 288 0.50      
16 A" 930 890 0.53      
17 A" 865 827 24.82      
18 A" 766 733 74.76      
19 A" 638 610 1.72      
20 A" 618 591 8.35      
21 A" 227 217 2.87      

Unscaled Zero Point Vibrational Energy (zpe) 13530.9 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 12943.7 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 HSEh1PBE/6-31G
ABC
0.30598 0.06877 0.05615

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.264 0.000
C2 1.316 -0.075 0.000
C3 1.350 -1.513 0.000
C4 0.060 -1.949 0.000
O5 -0.801 -0.853 0.000
Cl6 -0.818 1.817 0.000
H7 2.154 0.601 0.000
H8 2.234 -2.130 0.000
H9 -0.417 -2.911 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.35882.23212.21381.37491.75542.17973.27473.2028
C21.35881.43892.25572.25552.85221.07662.25113.3238
C32.23211.43891.36122.25023.97432.26231.07792.2530
C42.21382.25571.36121.39383.86713.29922.18131.0743
O51.37492.25552.25021.39382.67033.29333.29292.0939
Cl61.75542.85223.97433.86712.67033.21114.98994.7456
H72.17971.07662.26233.29923.29333.21112.73284.3527
H83.27472.25111.07792.18133.29294.98992.73282.7634
H93.20283.32382.25301.07432.09394.74564.35272.7634

picture of Furan, 2-chloro state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 105.811 C1 C2 H7 126.636
C1 O5 C4 106.181 C2 C1 O5 111.194
C2 C1 Cl6 132.244 C2 C3 C4 107.294
C2 C3 H8 126.268 C3 C2 H7 127.553
C3 C4 O5 109.520 C3 C4 H9 135.016
C4 C3 H8 126.438 O5 C1 Cl6 116.562
O5 C4 H9 115.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.032      
2 C -0.179      
3 C -0.204      
4 C 0.068      
5 O -0.474      
6 Cl 0.205      
7 H 0.205      
8 H 0.195      
9 H 0.216      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.873 -1.458 0.000 2.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.956 -0.271 0.000
y -0.271 -35.812 0.000
z 0.000 0.000 -43.196
Traceless
 xyz
x 0.549 -0.271 0.000
y -0.271 5.263 0.000
z 0.000 0.000 -5.812
Polar
3z2-r2-11.624
x2-y2-3.143
xy-0.271
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.664 -1.334 0.000
y -1.334 9.874 0.000
z 0.000 0.000 2.748


<r2> (average value of r2) Å2
<r2> 184.544
(<r2>)1/2 13.585