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/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 B3LYP/3-21G*
 hartrees
Energy at 0K-686.257830
Energy at 298.15K-686.261625
HF Energy-686.257830
Nuclear repulsion energy262.373822
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/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' 3335 3209 0.26      
2 A' 3313 3187 0.75      
3 A' 3290 3165 1.42      
4 A' 1588 1528 25.81      
5 A' 1486 1430 45.56      
6 A' 1389 1337 15.88      
7 A' 1269 1221 4.56      
8 A' 1173 1128 19.15      
9 A' 1129 1086 28.42      
10 A' 1042 1002 14.17      
11 A' 1028 989 14.49      
12 A' 920 885 4.82      
13 A' 904 869 26.33      
14 A' 487 468 5.11      
15 A' 301 290 0.43      
16 A" 921 886 0.44      
17 A" 862 830 21.81      
18 A" 758 730 71.99      
19 A" 639 615 0.58      
20 A" 616 592 8.78      
21 A" 228 219 2.98      

Unscaled Zero Point Vibrational Energy (zpe) 13338.0 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 12831.2 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/3-21G*
ABC
0.30336 0.06983 0.05676

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.282 0.000
C2 1.300 -0.121 0.000
C3 1.276 -1.566 0.000
C4 -0.030 -1.950 0.000
O5 -0.861 -0.813 0.000
Cl6 -0.715 1.837 0.000
H7 2.166 0.517 0.000
H8 2.134 -2.215 0.000
H9 -0.539 -2.895 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.36142.24592.23201.39331.71112.17833.28543.2226
C21.36141.44512.26112.26962.80961.07512.25423.3280
C32.24591.44511.36102.26603.94242.26481.07642.2491
C42.23202.26111.36101.40823.84793.30202.18071.0736
O51.39332.26962.26601.40822.65393.30613.30782.1070
Cl61.71112.80963.94243.84792.65393.16844.95364.7352
H72.17831.07512.26483.30203.30613.16842.73234.3535
H83.28542.25421.07642.18073.30784.95362.73232.7580
H93.22263.32802.24911.07362.10704.73524.35352.7580

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 106.272 C1 C2 H7 126.367
C1 O5 C4 105.634 C2 C1 O5 110.948
C2 C1 Cl6 131.921 C2 C3 C4 107.332
C2 C3 H8 126.136 C3 C2 H7 127.362
C3 C4 O5 109.815 C3 C4 H9 134.641
C4 C3 H8 126.532 O5 C1 Cl6 117.131
O5 C4 H9 115.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.135      
2 C -0.229      
3 C -0.240      
4 C 0.071      
5 O -0.470      
6 Cl 0.095      
7 H 0.208      
8 H 0.200      
9 H 0.229      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.441 -1.219 0.000 1.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.878 -0.295 0.000
y -0.295 -35.302 0.000
z 0.000 0.000 -43.552
Traceless
 xyz
x 0.549 -0.295 0.000
y -0.295 5.913 0.000
z 0.000 0.000 -6.462
Polar
3z2-r2-12.923
x2-y2-3.576
xy-0.295
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.358 -1.173 0.000
y -1.173 9.851 0.000
z 0.000 0.000 2.498


<r2> (average value of r2) Å2
<r2> 182.871
(<r2>)1/2 13.523