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: CID/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 CID/6-31G*
 hartrees
Energy at 0K-688.212253
Energy at 298.15K-688.216224
HF Energy-687.520532
Nuclear repulsion energy266.816702
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 CID/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' 3431 3169 0.09      
2 A' 3408 3148 0.52      
3 A' 3390 3131 2.16      
4 A' 1733 1601 23.45      
5 A' 1633 1509 64.91      
6 A' 1501 1387 13.70      
7 A' 1339 1237 41.26      
8 A' 1294 1196 30.40      
9 A' 1218 1125 9.50      
10 A' 1167 1078 19.32      
11 A' 1087 1004 21.56      
12 A' 989 913 35.21      
13 A' 938 866 1.93      
14 A' 523 484 3.70      
15 A' 331 306 0.46      
16 A" 903 835 0.25      
17 A" 856 790 21.56      
18 A" 798 737 56.11      
19 A" 667 616 8.84      
20 A" 626 578 5.26      
21 A" 241 223 2.09      

Unscaled Zero Point Vibrational Energy (zpe) 14037.2 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 12966.1 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 CID/6-31G*
ABC
0.31393 0.07215 0.05866

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.264 0.000
C2 1.298 -0.089 0.000
C3 1.295 -1.523 0.000
C4 0.003 -1.898 0.000
O5 -0.809 -0.808 0.000
Cl6 -0.759 1.788 0.000
H7 2.143 0.574 0.000
H8 2.151 -2.173 0.000
H9 -0.496 -2.847 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.34542.20732.16171.34361.70192.16493.25063.1502
C21.34541.43412.22452.22682.78441.07362.25183.2900
C32.20731.43411.34542.22253.89622.26171.07452.2272
C42.16172.22451.34541.35863.76303.26892.16551.0724
O51.34362.22682.22251.35862.59643.25953.25952.0623
Cl61.70192.78443.89623.76302.59643.14524.91464.6417
H72.16491.07362.26173.26893.25953.14522.74704.3201
H83.25062.25181.07452.16553.25954.91462.74702.7312
H93.15023.29002.22721.07242.06234.64174.32012.7312

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 105.105 C1 C2 H7 126.650
C1 O5 C4 106.254 C2 C1 O5 111.811
C2 C1 Cl6 131.704 C2 C3 C4 106.273
C2 C3 H8 127.108 C3 C2 H7 128.245
C3 C4 O5 110.556 C3 C4 H9 133.887
C4 C3 H8 126.619 O5 C1 Cl6 116.485
O5 C4 H9 115.556
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability