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

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-688.433540
Energy at 298.15K-688.437221
HF Energy-687.517467
Nuclear repulsion energy264.228714
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 CCSD(T)=FULL/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' 3302 3205        
2 A' 3282 3186        
3 A' 3263 3167        
4 A' 1632 1584        
5 A' 1548 1502        
6 A' 1427 1385        
7 A' 1267 1230        
8 A' 1227 1191        
9 A' 1163 1129        
10 A' 1102 1069        
11 A' 1043 1012        
12 A' 934 907        
13 A' 893 867        
14 A' 498 483        
15 A' 315 306        
16 A" 791 767        
17 A" 762 739        
18 A" 714 693        
19 A" 608 590        
20 A" 566 549        
21 A" 220 214        

Unscaled Zero Point Vibrational Energy (zpe) 13277.0 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 12888.0 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 CCSD(T)=FULL/6-31G*
ABC
0.30586 0.07101 0.05763

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.270 0.000
C2 1.313 -0.091 0.000
C3 1.311 -1.531 0.000
C4 0.005 -1.916 0.000
O5 -0.824 -0.816 0.000
Cl6 -0.766 1.801 0.000
H7 2.165 0.578 0.000
H8 2.177 -2.183 0.000
H9 -0.500 -2.873 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 Cl6 H7 H8 H9
C11.36192.22752.18591.36371.71152.18703.28003.1827
C21.36191.43992.24562.25732.81071.08342.26383.3210
C32.22751.43991.36202.25183.92572.27551.08432.2543
C42.18592.24561.36201.37713.79553.29992.18881.0822
O51.36372.25732.25181.37712.61753.29883.29812.0824
Cl61.71152.81073.92573.79552.61753.17564.95304.6813
H72.18701.08342.27553.29993.29883.17562.76184.3608
H83.28002.26381.08432.18883.29814.95302.76182.7644
H93.18273.32102.25431.08222.08244.68134.36082.7644

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 105.282 C1 C2 H7 126.481
C1 O5 C4 105.790 C2 C1 O5 111.830
C2 C1 Cl6 131.948 C2 C3 C4 106.509
C2 C3 H8 126.922 C3 C2 H7 128.237
C3 C4 O5 110.589 C3 C4 H9 134.217
C4 C3 H8 126.570 O5 C1 Cl6 116.222
O5 C4 H9 115.194
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability