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All results from a given calculation for C4H6O (Furan, 2,3-dihydro-)

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-231.136178
Energy at 298.15K-231.143306
Nuclear repulsion energy174.327358
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 B3PW91/6-31G*
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 3283 3141 9.22      
2 A 3255 3114 3.69      
3 A 3135 2999 39.03      
4 A 3086 2952 39.59      
5 A 3066 2934 34.08      
6 A 3038 2906 46.37      
7 A 1712 1638 59.81      
8 A 1545 1478 0.12      
9 A 1521 1455 0.09      
10 A 1428 1366 4.30      
11 A 1338 1280 2.77      
12 A 1317 1260 8.42      
13 A 1261 1206 6.40      
14 A 1223 1170 11.67      
15 A 1186 1135 76.42      
16 A 1111 1063 37.16      
17 A 1083 1036 3.18      
18 A 1027 982 6.92      
19 A 956 915 27.76      
20 A 949 908 26.59      
21 A 916 877 3.08      
22 A 853 816 1.20      
23 A 841 805 4.34      
24 A 719 688 33.40      
25 A 697 667 2.73      
26 A 453 434 23.13      
27 A 81 77 1.44      

Unscaled Zero Point Vibrational Energy (zpe) 20540.2 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19650.8 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 B3PW91/6-31G*
ABC
0.27152 0.25996 0.14021

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.964 2.114 0.072
C2 0.528 1.124 0.039
H3 2.266 -0.216 0.016
C4 1.198 -0.028 0.007
O5 0.434 -1.153 -0.060
H6 -1.377 1.164 -1.005
H7 -1.537 1.281 0.748
C8 -0.947 0.819 -0.054
H9 -1.516 -1.226 -0.719
H10 -1.306 -1.059 1.039
C11 -0.941 -0.722 0.062

Atom - Atom Distances (Å)
  H1 C2 H3 C4 O5 H6 H7 C8 H9 H10 C11
H11.08192.66962.15553.31232.74642.72152.31174.23454.01983.4161
C21.08192.19461.33312.28132.17292.18921.50933.20583.02202.3593
H32.66962.19461.08402.05924.02694.15203.37633.98303.81013.2467
C42.15551.33311.08401.36213.01283.12152.30743.05492.89842.2496
O53.31232.28132.05921.36213.08853.23432.40762.05982.06001.4458
H62.74642.17294.02693.01283.08851.76421.09962.41043.02112.2099
H72.72152.18924.15203.12153.23431.76421.09702.90442.36972.1992
C82.31171.50933.37632.30742.40761.09961.09702.22472.20281.5454
H94.23453.20583.98303.05492.05982.41042.90442.22471.77891.0933
H104.01983.02203.81012.89842.06003.02112.36972.20281.77891.0966
C113.41612.35933.24672.24961.44582.20992.19921.54541.09331.0966

picture of Furan, 2,3-dihydro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 126.067 H1 C2 C8 125.477
C2 C4 H3 130.157 C2 C4 O5 115.648
C2 C8 H6 111.834 C2 C8 H7 113.325
C2 C8 C11 101.125 H3 C4 O5 114.191
C4 C2 C8 108.381 C4 O5 C11 106.447
O5 C11 C8 107.155 O5 C11 H9 107.618
O5 C11 H10 107.450 H6 C8 H7 106.868
H6 C8 C11 112.245 H7 C8 C11 111.542
C8 C11 H9 113.835 C8 C11 H10 111.858
H9 C11 H10 108.643
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.164     0.142
2 C -0.236     -0.347
3 H 0.176     0.142
4 C 0.121     0.018
5 O -0.467     -0.280
6 H 0.177     -0.008
7 H 0.177     -0.019
8 C -0.381     0.193
9 H 0.177     0.046
10 H 0.173     0.050
11 C -0.081     0.063


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.748 0.880 0.095 1.158
CHELPG        
AIM        
ESP -0.771 0.823 0.109 1.133


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 93.816
(<r2>)1/2 9.686