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: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-242.657503
Energy at 298.15K-242.661562
HF Energy-242.657503
Nuclear repulsion energy197.617678
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 HF/LANL2DZ
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' 3540 3185 0.58      
2 A' 3502 3151 0.22      
3 A' 3484 3135 4.65      
4 A' 1749 1574 28.55      
5 A' 1647 1483 83.17      
6 A' 1507 1356 10.29      
7 A' 1363 1227 19.93      
8 A' 1282 1154 46.15      
9 A' 1213 1092 21.80      
10 A' 1132 1019 24.75      
11 A' 1101 991 35.75      
12 A' 996 896 45.99      
13 A' 976 879 7.84      
14 A' 499 449 5.01      
15 A' 319 287 0.33      
16 A" 1042 938 0.13      
17 A" 973 875 20.55      
18 A" 867 780 106.83      
19 A" 690 621 0.76      
20 A" 656 590 15.48      
21 A" 243 218 4.46      

Unscaled Zero Point Vibrational Energy (zpe) 14390.2 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 12949.8 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 HF/LANL2DZ
ABC
0.31122 0.06920 0.05661

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.263 0.000
C2 1.304 -0.074 0.000
C3 1.331 -1.526 0.000
C4 0.045 -1.943 0.000
O5 -0.795 -0.844 0.000
Cl6 -0.802 1.817 0.000
H7 2.136 0.591 0.000
H8 2.200 -2.144 0.000
H9 -0.425 -2.896 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.34662.23072.20691.36361.74812.16083.26093.1878
C21.34661.45292.25352.23602.82971.06472.25583.3097
C32.23071.45291.35202.23343.96572.26461.06552.2274
C42.20692.25351.35201.38343.85403.28482.16371.0626
O51.36362.23602.23341.38342.66103.26353.26472.0848
Cl61.74812.82973.96573.85402.66103.18334.96954.7277
H72.16081.06472.26463.28483.26353.18332.73534.3260
H83.26092.25581.06552.16373.26474.96952.73532.7303
H93.18783.30972.22741.06262.08484.72774.32602.7303

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 105.589 C1 C2 H7 126.904
C1 O5 C4 106.909 C2 C1 O5 111.180
C2 C1 Cl6 131.800 C2 C3 C4 106.862
C2 C3 H8 126.523 C3 C2 H7 127.507
C3 C4 O5 109.461 C3 C4 H9 134.228
C4 C3 H8 126.616 O5 C1 Cl6 117.019
O5 C4 H9 116.311
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.113      
2 C -0.191      
3 C -0.237      
4 C -0.011      
5 O -0.397      
6 Cl -0.021      
7 H 0.250      
8 H 0.239      
9 H 0.254      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.324 -1.836 0.000 2.961
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -39.465 0.078 0.000
y 0.078 -36.615 0.000
z 0.000 0.000 -43.701
Traceless
 xyz
x 0.693 0.078 0.000
y 0.078 4.968 0.000
z 0.000 0.000 -5.661
Polar
3z2-r2-11.322
x2-y2-2.850
xy0.078
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.459 -1.169 0.000
y -1.169 8.892 0.000
z 0.000 0.000 2.877


<r2> (average value of r2) Å2
<r2> 144.144
(<r2>)1/2 12.006