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All results from a given calculation for C4H4O (Furan)

using model chemistry: mPW1PW91/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/Def2TZVPP
 hartrees
Energy at 0K-230.056016
Energy at 298.15K 
HF Energy-230.056016
Nuclear repulsion energy161.845167
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 mPW1PW91/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3308 3308 0.01 211.95 0.11 0.20
2 A1 3282 3282 0.08 27.34 0.31 0.47
3 A1 1535 1535 20.03 46.55 0.13 0.23
4 A1 1435 1435 2.82 16.52 0.33 0.50
5 A1 1178 1178 0.63 30.72 0.15 0.26
6 A1 1111 1111 14.77 5.91 0.15 0.25
7 A1 1027 1027 40.54 0.84 0.21 0.35
8 A1 893 893 14.43 0.51 0.68 0.81
9 A2 901 901 0.00 0.83 0.75 0.86
10 A2 751 751 0.00 0.09 0.75 0.86
11 A2 622 622 0.00 0.05 0.75 0.86
12 B1 870 870 0.13 0.65 0.75 0.86
13 B1 771 771 107.07 0.24 0.75 0.86
14 B1 633 633 23.63 1.07 0.75 0.86
15 B2 3301 3301 0.35 9.99 0.75 0.86
16 B2 3271 3271 1.97 93.82 0.75 0.86
17 B2 1615 1615 0.21 0.49 0.75 0.86
18 B2 1296 1296 0.37 0.56 0.75 0.86
19 B2 1232 1232 18.11 0.25 0.75 0.86
20 B2 1074 1074 2.79 4.85 0.75 0.86
21 B2 896 896 0.66 3.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15500.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15500.0 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 mPW1PW91/Def2TZVPP
ABC
0.31986 0.31314 0.15823

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.151
C2 0.000 1.086 0.347
C3 0.000 -1.086 0.347
C4 0.000 0.714 -0.953
C5 0.000 -0.714 -0.953
H6 0.000 2.040 0.842
H7 0.000 -2.040 0.842
H8 0.000 1.370 -1.806
H9 0.000 -1.370 -1.806

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35141.35142.22192.22192.06382.06383.25913.2591
C21.35142.17211.35232.22011.07523.16552.17173.2659
C31.35142.17212.22011.35233.16551.07523.26592.1717
C42.22191.35232.22011.42722.23223.28741.07622.2511
C52.22192.22011.35231.42723.28742.23222.25111.0762
H62.06381.07523.16552.23223.28744.08092.73184.3176
H72.06383.16551.07523.28742.23224.08094.31762.7318
H83.25912.17173.26591.07622.25112.73184.31762.7392
H93.25913.26592.17172.25111.07624.31762.73182.7392

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.532 O1 C2 H6 116.066
O1 C3 C5 110.532 O1 C3 H7 116.066
C2 O1 C3 106.961 C2 C4 C5 105.987
C2 C4 H8 126.456 C3 C5 C4 105.987
C3 C5 H9 126.456 C4 C2 H6 133.402
C4 C5 H9 127.557 C5 C3 H7 133.402
C5 C4 H8 127.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.203      
2 C 0.007      
3 C 0.007      
4 C -0.159      
5 C -0.159      
6 H 0.132      
7 H 0.132      
8 H 0.122      
9 H 0.122      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.578 0.578
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.750 0.000 0.000
y 0.000 -24.068 0.000
z 0.000 0.000 -27.770
Traceless
 xyz
x -5.831 0.000 0.000
y 0.000 5.692 0.000
z 0.000 0.000 0.139
Polar
3z2-r20.277
x2-y2-7.682
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.454 0.000 0.000
y 0.000 7.974 0.000
z 0.000 0.000 7.442


<r2> (average value of r2) Å2
<r2> 80.634
(<r2>)1/2 8.980