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: mPW1PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G
 hartrees
Energy at 0K-689.469813
Energy at 298.15K-689.473635
HF Energy-689.469813
Nuclear repulsion energy261.751311
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 mPW1PW91/6-31G
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' 3385 3204 0.48      
2 A' 3353 3174 0.65      
3 A' 3329 3151 2.00      
4 A' 1639 1551 26.41      
5 A' 1541 1459 53.19      
6 A' 1419 1344 12.22      
7 A' 1277 1209 10.71      
8 A' 1206 1141 45.20      
9 A' 1158 1096 12.55      
10 A' 1079 1022 14.09      
11 A' 1049 993 23.02      
12 A' 930 880 33.13      
13 A' 909 861 4.98      
14 A' 480 454 5.13      
15 A' 301 285 0.51      
16 A" 933 884 0.46      
17 A" 868 821 25.01      
18 A" 769 728 75.42      
19 A" 638 604 1.61      
20 A" 618 585 8.55      
21 A" 227 215 2.91      

Unscaled Zero Point Vibrational Energy (zpe) 13553.7 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 12830.0 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 mPW1PW91/6-31G
ABC
0.30620 0.06877 0.05616

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.264 0.000
C2 1.316 -0.074 0.000
C3 1.351 -1.512 0.000
C4 0.062 -1.948 0.000
O5 -0.800 -0.854 0.000
Cl6 -0.820 1.817 0.000
H7 2.152 0.602 0.000
H8 2.234 -2.128 0.000
H9 -0.414 -2.910 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.35832.23182.21341.37461.75592.17843.27333.2012
C21.35831.43912.25532.25492.85231.07542.25033.3223
C32.23181.43911.36072.24963.97452.26131.07682.2514
C42.21342.25531.36071.39343.86713.29772.17991.0731
O51.37462.25492.24961.39342.67043.29163.29112.0925
Cl61.75592.85233.97453.86712.67043.21074.98904.7444
H72.17841.07542.26133.29773.29163.21072.73144.3500
H83.27332.25031.07682.17993.29114.98902.73142.7615
H93.20123.32232.25141.07312.09254.74444.35002.7615

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 105.804 C1 C2 H7 126.653
C1 O5 C4 106.192 C2 C1 O5 111.194
C2 C1 Cl6 132.247 C2 C3 C4 107.287
C2 C3 H8 126.267 C3 C2 H7 127.543
C3 C4 O5 109.524 C3 C4 H9 135.017
C4 C3 H8 126.446 O5 C1 Cl6 116.560
O5 C4 H9 115.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.029      
2 C -0.182      
3 C -0.207      
4 C 0.068      
5 O -0.478      
6 Cl 0.204      
7 H 0.207      
8 H 0.198      
9 H 0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.893 -1.465 0.000 2.394
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.868 -0.280 0.000
y -0.280 -35.716 0.000
z 0.000 0.000 -43.130
Traceless
 xyz
x 0.555 -0.280 0.000
y -0.280 5.283 0.000
z 0.000 0.000 -5.838
Polar
3z2-r2-11.676
x2-y2-3.152
xy-0.280
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.652 -1.337 0.000
y -1.337 9.837 0.000
z 0.000 0.000 2.747


<r2> (average value of r2) Å2
<r2> 184.467
(<r2>)1/2 13.582