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: B2PLYP=FULL/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-689.314068
Energy at 298.15K-689.317880
HF Energy-688.967643
Nuclear repulsion energy265.760722
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 B2PLYP=FULL/6-31G(2df,p)
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' 3325 3325 0.03      
2 A' 3312 3312 0.65      
3 A' 3291 3291 1.48      
4 A' 1607 1607 20.24      
5 A' 1519 1519 47.59      
6 A' 1410 1410 17.03      
7 A' 1254 1254 13.17      
8 A' 1219 1219 45.04      
9 A' 1162 1162 7.01      
10 A' 1095 1095 13.99      
11 A' 1036 1036 21.14      
12 A' 937 937 27.92      
13 A' 898 898 1.72      
14 A' 499 499 4.19      
15 A' 313 313 0.28      
16 A" 855 855 0.02      
17 A" 804 804 26.98      
18 A" 742 742 36.29      
19 A" 640 640 4.24      
20 A" 615 615 4.34      
21 A" 229 229 1.24      

Unscaled Zero Point Vibrational Energy (zpe) 13380.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13380.3 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 B2PLYP=FULL/6-31G(2df,p)
ABC
0.30958 0.07178 0.05827

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.267 0.000
C2 1.308 -0.098 0.000
C3 1.297 -1.530 0.000
C4 -0.008 -1.904 0.000
O5 -0.820 -0.806 0.000
Cl6 -0.754 1.795 0.000
H7 2.156 0.563 0.000
H8 2.150 -2.186 0.000
H9 -0.517 -2.850 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.35842.21602.17051.35011.70392.17663.26213.1596
C21.35841.43202.23442.24292.79941.07532.25153.3025
C32.21601.43201.35712.23713.90652.26291.07652.2435
C42.17052.23441.35711.36543.77303.28172.17641.0748
O51.35012.24292.23711.36542.60163.27593.27512.0665
Cl61.70392.79943.90653.77302.60163.16014.92794.6510
H72.17661.07532.26293.28173.27593.16012.74974.3357
H83.26212.25151.07652.17643.27514.92792.74972.7486
H93.15963.30252.24351.07482.06654.65104.33572.7486

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 105.120 C1 C2 H7 126.458
C1 O5 C4 106.124 C2 C1 O5 111.803
C2 C1 Cl6 131.846 C2 C3 C4 106.445
C2 C3 H8 127.106 C3 C2 H7 128.421
C3 C4 O5 110.508 C3 C4 H9 134.267
C4 C3 H8 126.449 O5 C1 Cl6 116.352
O5 C4 H9 115.225
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability