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All results from a given calculation for C4H4O (Furan)

using model chemistry: MP3=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-229.348281
Energy at 298.15K-229.353015
HF Energy-228.623518
Nuclear repulsion energy160.953641
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 MP3=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 A1 3352 3146 0.01      
2 A1 3323 3118 0.49      
3 A1 1583 1485 23.16      
4 A1 1471 1380 4.39      
5 A1 1203 1129 0.30      
6 A1 1124 1054 17.50      
7 A1 1051 986 40.10      
8 A1 902 846 16.47      
9 A2 808 758 0.00      
10 A2 731 686 0.00      
11 A2 587 551 0.00      
12 B1 827 776 0.08      
13 B1 767 720 91.56      
14 B1 622 583 25.94      
15 B2 3347 3140 2.12      
16 B2 3312 3108 1.98      
17 B2 1667 1564 0.18      
18 B2 1331 1249 3.79      
19 B2 1278 1199 28.09      
20 B2 1106 1038 0.50      
21 B2 905 849 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 15648.0 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 14682.5 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 MP3=FULL/6-31G*
ABC
0.31653 0.30949 0.15648

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.162
C2 0.000 1.089 0.348
C3 0.000 -1.089 0.348
C4 0.000 0.720 -0.960
C5 0.000 -0.720 -0.960
H6 0.000 2.048 0.845
H7 0.000 -2.048 0.845
H8 0.000 1.376 -1.819
H9 0.000 -1.376 -1.819

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.35981.35982.24062.24062.07212.07213.28313.2831
C21.35982.17811.35852.23231.07983.17592.18543.2819
C31.35982.17812.23231.35853.17591.07983.28192.1854
C42.24061.35852.23231.44052.24013.30421.08082.2656
C52.24062.23231.35851.44053.30422.24012.26561.0808
H62.07211.07983.17592.24013.30424.09542.74684.3378
H72.07213.17591.07983.30422.24014.09544.33782.7468
H83.28312.18543.28191.08082.26562.74684.33782.7524
H93.28313.28192.18542.26561.08084.33782.74682.7524

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 111.031 O1 C2 H6 115.817
O1 C3 C5 111.031 O1 C3 H7 115.817
C2 O1 C3 106.434 C2 C4 C5 105.752
C2 C4 H8 126.881 C3 C5 C4 105.752
C3 C5 H9 126.881 C4 C2 H6 133.152
C4 C5 H9 127.367 C5 C3 H7 133.152
C5 C4 H8 127.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability