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All results from a given calculation for C4H4O (Furan)

using model chemistry: BLYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-230.035041
Energy at 298.15K 
HF Energy-230.035041
Nuclear repulsion energy159.739825
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 BLYP/aug-cc-pVTZ
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 3205 3194 0.02 215.07 0.12 0.22
2 A1 3174 3163 0.92 50.65 0.22 0.36
3 A1 1450 1446 15.89 61.96 0.10 0.19
4 A1 1363 1359 3.53 20.74 0.30 0.46
5 A1 1128 1124 0.00 32.23 0.13 0.24
6 A1 1043 1039 3.62 8.39 0.04 0.08
7 A1 974 971 43.60 3.48 0.15 0.26
8 A1 857 854 16.15 0.10 0.73 0.85
9 A2 856 853 0.00 0.32 0.75 0.86
10 A2 696 693 0.00 1.76 0.75 0.86
11 A2 598 596 0.00 0.03 0.75 0.86
12 B1 817 815 0.21 1.62 0.75 0.86
13 B1 728 726 109.74 0.07 0.75 0.86
14 B1 602 600 18.90 0.72 0.75 0.86
15 B2 3199 3188 0.42 18.78 0.75 0.86
16 B2 3164 3153 2.72 99.95 0.75 0.86
17 B2 1531 1525 0.03 0.06 0.75 0.86
18 B2 1252 1248 0.11 0.52 0.75 0.86
19 B2 1137 1133 18.13 0.76 0.75 0.86
20 B2 1013 1010 0.28 4.78 0.75 0.86
21 B2 866 863 0.93 1.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14826.2 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 14775.8 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 BLYP/aug-cc-pVTZ
ABC
0.31134 0.30527 0.15414

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.172
C2 0.000 1.105 0.346
C3 0.000 -1.105 0.346
C4 0.000 0.720 -0.964
C5 0.000 -0.720 -0.964
H6 0.000 2.063 0.846
H7 0.000 -2.063 0.846
H8 0.000 1.375 -1.825
H9 0.000 -1.375 -1.825

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9
O11.37981.37982.25332.25332.08842.08843.29703.2970
C21.37982.21091.36542.24641.08043.20772.18783.2962
C31.37982.21092.24641.36543.20771.08043.29622.1878
C42.25331.36542.24641.43922.25423.31961.08222.2646
C52.25332.24641.36541.43923.31962.25422.26461.0822
H62.08841.08043.20772.25423.31964.12592.75894.3538
H72.08843.20771.08043.31962.25424.12594.35382.7589
H83.29702.18783.29621.08222.26462.75894.35382.7494
H93.29703.29622.18782.26461.08224.35382.75892.7494

picture of Furan state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C4 110.339 O1 C2 H6 115.647
O1 C3 C5 110.339 O1 C3 H7 115.647
C2 O1 C3 106.490 C2 C4 C5 106.416
C2 C4 H8 126.332 C3 C5 C4 106.416
C3 C5 H9 126.332 C4 C2 H6 134.014
C4 C5 H9 127.253 C5 C3 H7 134.014
C5 C4 H8 127.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.281      
2 C -0.393      
3 C -0.393      
4 C -0.383      
5 C -0.383      
6 H 0.595      
7 H 0.595      
8 H 0.321      
9 H 0.321      


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 -0.671 0.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.276 0.000 0.000
y 0.000 -24.977 0.000
z 0.000 0.000 -28.776
Traceless
 xyz
x -5.399 0.000 0.000
y 0.000 5.548 0.000
z 0.000 0.000 -0.149
Polar
3z2-r2-0.299
x2-y2-7.298
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.364 0.000 0.000
y 0.000 9.087 0.000
z 0.000 0.000 8.231


<r2> (average value of r2) Å2
<r2> 82.740
(<r2>)1/2 9.096