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All results from a given calculation for C4H6O (Furan, 2,5-dihydro-)

using model chemistry: HF/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/cc-pVDZ
 hartrees
Energy at 0K-229.804653
Energy at 298.15K-229.812117
Nuclear repulsion energy175.326073
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 HF/cc-pVDZ
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 3389 3077 8.81      
2 A1 3169 2878 18.94      
3 A1 1847 1678 0.19      
4 A1 1640 1489 0.43      
5 A1 1528 1388 13.27      
6 A1 1196 1086 1.38      
7 A1 1059 962 21.82      
8 A1 1011 918 16.54      
9 A1 813 738 8.01      
10 A2 3193 2900 0.00      
11 A2 1322 1200 0.00      
12 A2 1158 1052 0.00      
13 A2 1057 960 0.00      
14 A2 424 385 0.00      
15 B1 3197 2903 136.41      
16 B1 1288 1169 0.70      
17 B1 1126 1023 29.08      
18 B1 753 684 32.68      
19 B1 138 126 9.04      
20 B2 3361 3052 4.40      
21 B2 3162 2871 172.56      
22 B2 1628 1478 3.59      
23 B2 1494 1357 3.26      
24 B2 1431 1299 0.98      
25 B2 1263 1146 139.43      
26 B2 979 889 0.17      
27 B2 877 797 1.64      

Unscaled Zero Point Vibrational Energy (zpe) 21751.5 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 19750.3 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 HF/cc-pVDZ
ABC
0.27184 0.26688 0.14179

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 1.170
C2 0.000 1.162 0.377
C3 0.000 0.659 -1.040
C4 0.000 -0.659 -1.040
C5 0.000 -1.162 0.377
H6 0.883 1.768 0.603
H7 -0.883 1.768 0.603
H8 -0.883 -1.768 0.603
H9 0.883 -1.768 0.603
H10 0.000 1.308 -1.905
H11 0.000 -1.308 -1.905

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11
O11.40692.30642.30641.40692.05582.05582.05582.05583.34143.3414
C21.40691.50352.30722.32381.09461.09463.06813.06812.28593.3625
C32.30641.50351.31802.30722.16992.16993.06073.06071.08112.1488
C42.30642.30721.31801.50353.06073.06072.16992.16992.14881.0811
C51.40692.32382.30721.50353.06813.06811.09461.09463.36252.2859
H62.05581.09462.16993.06073.06811.76663.95193.53512.69784.0655
H72.05581.09462.16993.06073.06811.76663.53513.95192.69784.0655
H82.05583.06813.06072.16991.09463.95193.53511.76664.06552.6978
H92.05583.06813.06072.16991.09463.53513.95191.76664.06552.6978
H103.34142.28591.08112.14883.36252.69782.69784.06554.06552.6166
H113.34143.36252.14881.08112.28594.06554.06552.69782.69782.6166

picture of Furan, 2,5-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 104.783 O1 C2 H6 109.903
O1 C2 H7 109.903 O1 C5 C4 104.783
O1 C5 H8 109.903 O1 C5 H9 109.903
C2 O1 C5 111.349 C2 C3 C4 109.543
C2 C3 H10 123.543 C3 C2 H6 112.320
C3 C2 H7 112.320 C3 C4 C5 109.543
C3 C4 H11 126.914 C4 C3 H10 126.914
C4 C5 H8 112.320 C4 C5 H9 112.320
C5 C4 H11 123.543 H6 C2 H7 107.601
H8 C5 H9 107.601
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.503      
2 C 0.302      
3 C -0.140      
4 C -0.140      
5 C 0.302      
6 H 0.031      
7 H 0.031      
8 H 0.031      
9 H 0.031      
10 H 0.027      
11 H 0.027      


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 -1.756 1.756
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.201 0.000 0.000
y 0.000 -25.919 0.000
z 0.000 0.000 -32.320
Traceless
 xyz
x -2.081 0.000 0.000
y 0.000 5.841 0.000
z 0.000 0.000 -3.761
Polar
3z2-r2-7.521
x2-y2-5.281
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.387 0.000 0.000
y 0.000 8.367 0.000
z 0.000 0.000 5.715


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000