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All results from a given calculation for C4H3ClO (Furan, 2-chloro)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-688.370018
Energy at 298.15K-688.373767
HF Energy-687.518230
Nuclear repulsion energy264.565424
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 QCISD/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' 3322 3163 0.28      
2 A' 3301 3143 0.23      
3 A' 3282 3126 2.21      
4 A' 1664 1584 19.34      
5 A' 1576 1501 54.61      
6 A' 1439 1371 11.07      
7 A' 1280 1219 30.79      
8 A' 1239 1180 42.63      
9 A' 1171 1115 8.03      
10 A' 1112 1059 15.90      
11 A' 1050 1000 21.04      
12 A' 944 899 31.64      
13 A' 901 858 1.89      
14 A' 503 479 3.14      
15 A' 319 303 0.44      
16 A" 816 777 4.29      
17 A" 783 746 24.43      
18 A" 737 702 43.59      
19 A" 619 590 12.54      
20 A" 581 553 1.32      
21 A" 225 214 1.89      

Unscaled Zero Point Vibrational Energy (zpe) 13431.8 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 12791.1 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 QCISD/6-31G*
ABC
0.30732 0.07113 0.05776

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.269 0.000
C2 1.310 -0.086 0.000
C3 1.312 -1.528 0.000
C4 0.011 -1.914 0.000
O5 -0.821 -0.818 0.000
Cl6 -0.769 1.797 0.000
H7 2.159 0.584 0.000
H8 2.178 -2.178 0.000
H9 -0.490 -2.871 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.35682.22482.18271.36181.71112.18203.27593.1784
C21.35681.44192.24232.25252.80501.08202.26543.3164
C32.22481.44191.35712.24783.92282.27561.08302.2479
C42.18272.24231.35711.37583.79233.29462.18301.0809
O51.36182.25252.24781.37582.61573.29323.29272.0801
Cl61.71112.80503.92283.79232.61573.16974.94884.6772
H72.18201.08202.27563.29463.29323.16972.76254.3543
H83.27592.26541.08302.18303.29274.94882.76252.7566
H93.17843.31642.24791.08092.08014.67724.35432.7566

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 105.256 C1 C2 H7 126.579
C1 O5 C4 105.749 C2 C1 O5 111.901
C2 C1 Cl6 131.874 C2 C3 C4 106.427
C2 C3 H8 127.009 C3 C2 H7 128.164
C3 C4 O5 110.667 C3 C4 H9 134.143
C4 C3 H8 126.564 O5 C1 Cl6 116.225
O5 C4 H9 115.190
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability