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: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-689.512861
Energy at 298.15K-689.516676
HF Energy-689.512861
Nuclear repulsion energy265.128249
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 B3PW91/cc-pVDZ
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' 3307 3191 0.14      
2 A' 3292 3177 0.87      
3 A' 3269 3155 1.60      
4 A' 1619 1563 22.94      
5 A' 1531 1478 60.67      
6 A' 1412 1363 13.54      
7 A' 1238 1195 30.62      
8 A' 1218 1175 34.32      
9 A' 1159 1118 5.27      
10 A' 1091 1053 13.06      
11 A' 1019 983 27.72      
12 A' 935 902 28.31      
13 A' 892 861 1.06      
14 A' 498 481 5.45      
15 A' 314 303 0.37      
16 A" 879 848 0.12      
17 A" 807 779 18.40      
18 A" 735 709 50.50      
19 A" 635 612 3.05      
20 A" 614 592 6.25      
21 A" 227 219 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 13345.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 12877.9 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 B3PW91/cc-pVDZ
ABC
0.30799 0.07146 0.05800

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.266 0.000
C2 1.312 -0.103 0.000
C3 1.294 -1.537 0.000
C4 -0.016 -1.906 0.000
O5 -0.823 -0.805 0.000
Cl6 -0.750 1.802 0.000
H7 2.170 0.561 0.000
H8 2.153 -2.203 0.000
H9 -0.532 -2.861 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.36282.21952.17171.35031.70932.19043.27623.1714
C21.36281.43382.23882.24672.80741.08552.26223.3167
C32.21951.43381.36152.24003.91522.27341.08702.2553
C42.17172.23881.36151.36453.77963.29632.18991.0851
O51.35032.24672.24001.36452.60783.28993.28802.0761
Cl61.70932.80743.91523.77962.60783.17334.94684.6676
H72.19041.08552.27343.29633.28993.17332.76414.3597
H83.27622.26221.08702.18993.28804.94682.76412.7643
H93.17143.31672.25531.08512.07614.66764.35972.7643

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 105.028 C1 C2 H7 126.553
C1 O5 C4 106.250 C2 C1 O5 111.805
C2 C1 Cl6 131.753 C2 C3 C4 106.407
C2 C3 H8 127.104 C3 C2 H7 128.420
C3 C4 O5 110.511 C3 C4 H9 134.075
C4 C3 H8 126.489 O5 C1 Cl6 116.442
O5 C4 H9 115.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.075      
2 C 0.005      
3 C -0.036      
4 C 0.101      
5 O -0.160      
6 Cl -0.050      
7 H 0.015      
8 H 0.017      
9 H 0.032      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.086 -1.158 0.000 1.588
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.250 0.023 0.000
y 0.023 -35.894 0.000
z 0.000 0.000 -42.803
Traceless
 xyz
x 1.098 0.023 0.000
y 0.023 4.632 0.000
z 0.000 0.000 -5.730
Polar
3z2-r2-11.461
x2-y2-2.356
xy0.023
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.038 -1.212 0.000
y -1.212 10.500 0.000
z 0.000 0.000 3.475


<r2> (average value of r2) Å2
<r2> 179.522
(<r2>)1/2 13.399