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All results from a given calculation for C4H7NO (Oxazole, 4,5-dihydro-2-methyl-)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-284.675624
Energy at 298.15K-284.684375
Nuclear repulsion energy235.929708
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 PBEPBE/3-21G
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 3119 3091 2.95      
2 A 3017 2989 33.08      
3 A 3007 2979 31.64      
4 A 3003 2976 5.45      
5 A 1639 1624 77.62      
6 A 1519 1506 0.88      
7 A 1497 1484 4.91      
8 A 1488 1474 13.00      
9 A 1404 1391 21.35      
10 A 1314 1302 14.44      
11 A 1279 1268 1.81      
12 A 1194 1183 95.74      
13 A 1046 1037 0.72      
14 A 915 907 35.18      
15 A 899 891 2.53      
16 A 864 857 46.87      
17 A 838 830 22.19      
18 A 718 712 8.03      
19 A 638 633 2.81      
20 A 317 314 5.31      
21 A 3074 3047 36.77      
22 A 3060 3032 5.43      
23 A 3046 3018 0.74      
24 A 1496 1482 12.17      
25 A 1236 1225 0.10      
26 A 1162 1151 0.03      
27 A 1076 1066 3.87      
28 A 1053 1043 1.87      
29 A 806 799 0.07      
30 A 551 546 2.87      
31 A 227 225 13.39      
32 A 132 130 1.68      
33 A 116 115 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23374.8 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 23162.1 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 PBEPBE/3-21G
ABC
0.24674 0.11016 0.07967

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.361 2.155 0.000
C2 0.531 -1.552 0.000
C3 -1.021 -1.308 0.000
N4 -1.190 0.199 0.000
O5 1.121 -0.167 0.000
C6 0.000 0.703 0.000
H7 0.886 -2.069 0.905
H8 0.886 -2.069 -0.905
H9 -1.507 -1.722 0.898
H10 -1.507 -1.722 -0.898
H11 0.967 2.392 0.892
H12 0.967 2.392 -0.892
H13 -0.559 2.754 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.71033.72822.49652.44291.49624.35154.35154.39634.39631.10381.10381.0984
C23.71031.57082.45491.50532.31611.10121.10122.23432.23434.06614.06614.4418
C33.72821.57081.51612.42692.25492.24322.24321.10231.10234.29334.29334.0884
N42.49652.45491.51612.34021.29263.20483.20482.14392.14393.20273.20272.6324
O52.44291.50532.42692.34021.41902.11982.11983.18373.18372.71372.71373.3701
C61.49622.31612.25491.29261.41903.04743.04742.99322.99322.14062.14062.1264
H74.35151.10122.24323.20482.11983.04741.81002.41823.01644.46154.80965.1159
H84.35151.10122.24323.20482.11983.04741.81003.01642.41824.80964.46155.1159
H94.39632.23431.10232.14393.18372.99322.41823.01641.79614.80065.12334.6630
H104.39632.23431.10232.14393.18372.99323.01642.41821.79615.12334.80064.6630
H111.10384.06614.29333.20272.71372.14064.46154.80964.80065.12331.78331.8045
H121.10384.06614.29333.20272.71372.14064.80964.46155.12334.80061.78331.8045
H131.09844.44184.08842.63243.37012.12645.11595.11594.66304.66301.80451.8045

picture of Oxazole, 4,5-dihydro-2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C6 N4 126.917 C1 C6 O5 113.833
C2 C3 N4 105.345 C2 C3 H9 112.219
C2 C3 H10 112.219 C2 O5 C6 104.712
C3 C2 O5 104.159 C3 C2 H7 113.009
C3 C2 H8 113.009 C3 N4 C6 106.533
N4 C3 H9 108.898 N4 C3 H10 108.898
N4 C6 O5 119.251 O5 C2 H7 107.831
O5 C2 H8 107.831 C6 C1 H11 109.916
C6 C1 H12 109.916 C6 C1 H13 109.121
H7 C2 H8 110.546 H9 C3 H10 109.113
H11 C1 H12 107.760 H11 C1 H13 110.057
H12 C1 H13 110.057
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.653      
2 C -0.234      
3 C -0.344      
4 N -0.447      
5 O -0.428      
6 C 0.471      
7 H 0.225      
8 H 0.225      
9 H 0.232      
10 H 0.232      
11 H 0.239      
12 H 0.239      
13 H 0.243      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.734 -1.037 0.000 1.270
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.861 2.116 0.000
y 2.116 -28.874 0.000
z 0.000 0.000 -35.300
Traceless
 xyz
x -8.774 2.116 0.000
y 2.116 9.206 0.000
z 0.000 0.000 -0.432
Polar
3z2-r2-0.865
x2-y2-11.987
xy2.116
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.053 0.632 0.000
y 0.632 8.880 0.000
z 0.000 0.000 5.134


<r2> (average value of r2) Å2
<r2> 153.254
(<r2>)1/2 12.380