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: B3LYP/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 B3LYP/STO-3G
 hartrees
Energy at 0K-681.679827
Energy at 298.15K-681.683242
HF Energy-681.679827
Nuclear repulsion energy257.871317
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 B3LYP/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' 3531 3151 24.53      
2 A' 3517 3139 26.56      
3 A' 3492 3117 18.88      
4 A' 1698 1515 19.14      
5 A' 1582 1412 28.20      
6 A' 1486 1326 21.49      
7 A' 1332 1189 25.28      
8 A' 1262 1126 16.80      
9 A' 1186 1058 3.19      
10 A' 1144 1021 5.97      
11 A' 1079 962 5.92      
12 A' 942 840 19.47      
13 A' 916 817 2.29      
14 A' 498 444 3.24      
15 A' 287 256 0.38      
16 A" 925 826 0.06      
17 A" 854 762 8.30      
18 A" 760 678 28.53      
19 A" 618 552 0.22      
20 A" 583 520 1.09      
21 A" 220 197 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 13955.5 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 12453.8 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 B3LYP/STO-3G
ABC
0.29316 0.06721 0.05468

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.261 0.000
C2 1.340 -0.066 0.000
C3 1.384 -1.515 0.000
C4 0.083 -1.960 0.000
O5 -0.830 -0.880 0.000
Cl6 -0.841 1.835 0.000
H7 2.184 0.628 0.000
H8 2.285 -2.135 0.000
H9 -0.371 -2.958 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.37892.25122.22241.41041.78432.21453.31033.2404
C21.37891.44952.27292.31702.89251.09292.27413.3602
C32.25121.44951.37492.30314.02092.28741.09362.2721
C42.22242.27291.37491.41463.90543.33342.20891.0966
O51.41042.31702.30311.41462.71413.36983.35822.1288
Cl61.78432.89254.02093.90542.71413.25645.05204.8158
H72.21451.09292.28743.33343.36983.25642.76434.4032
H83.31032.27411.09362.20893.35825.05202.76432.7808
H93.24043.36022.27211.09662.12884.81584.40322.7808

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 105.461 C1 C2 H7 126.859
C1 O5 C4 103.758 C2 C1 O5 112.334
C2 C1 Cl6 131.830 C2 C3 C4 107.145
C2 C3 H8 126.253 C3 C2 H7 127.680
C3 C4 O5 111.301 C3 C4 H9 133.344
C4 C3 H8 126.602 O5 C1 Cl6 115.836
O5 C4 H9 115.355
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.098      
2 C -0.104      
3 C -0.105      
4 C 0.005      
5 O -0.114      
6 Cl -0.081      
7 H 0.102      
8 H 0.095      
9 H 0.104      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.223 -1.679 0.000 2.077
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.855 0.860 0.000
y 0.860 -36.096 0.000
z 0.000 0.000 -38.966
Traceless
 xyz
x 0.675 0.860 0.000
y 0.860 1.815 0.000
z 0.000 0.000 -2.490
Polar
3z2-r2-4.980
x2-y2-0.760
xy0.860
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.913 -1.070 0.000
y -1.070 6.863 0.000
z 0.000 0.000 0.816


<r2> (average value of r2) Å2
<r2> 187.615
(<r2>)1/2 13.697