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

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-51.397182
Energy at 298.15K-51.406354
Nuclear repulsion energy130.861253
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/CEP-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 3360 3017 22.30      
2 A 3276 2942 91.66      
3 A 3251 2919 67.39      
4 A 3248 2917 37.07      
5 A 1926 1729 248.15      
6 A 1670 1500 2.09      
7 A 1641 1473 0.35      
8 A 1606 1442 6.12      
9 A 1566 1406 57.65      
10 A 1515 1361 8.58      
11 A 1478 1328 36.89      
12 A 1366 1227 136.36      
13 A 1194 1072 5.31      
14 A 1149 1032 119.30      
15 A 1078 968 1.46      
16 A 1035 929 34.98      
17 A 995 893 22.40      
18 A 819 735 7.52      
19 A 698 627 4.16      
20 A 364 327 6.11      
21 A 3330 2990 98.17      
22 A 3314 2976 28.82      
23 A 3288 2953 21.30      
24 A 1606 1442 7.69      
25 A 1355 1217 0.00      
26 A 1322 1188 4.60      
27 A 1214 1090 0.04      
28 A 1160 1042 2.65      
29 A 885 795 1.74      
30 A 649 583 9.83      
31 A 256 230 12.94      
32 A 155 139 0.81      
33 A 62 56 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 25915.5 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 23272.1 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 HF/CEP-31G*
ABC
0.26123 0.11398 0.08304

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.377 2.134 0.000
C2 0.505 -1.509 0.000
C3 -1.030 -1.268 0.000
N4 -1.168 0.192 0.000
O5 1.050 -0.184 0.000
C6 0.000 0.673 0.000
H7 0.864 -2.026 0.887
H8 0.864 -2.026 -0.887
H9 -1.514 -1.688 0.880
H10 -1.514 -1.688 -0.880
H11 0.978 2.354 0.882
H12 0.978 2.354 -0.882
H13 -0.523 2.742 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.64453.68062.48082.41321.50844.28094.28094.35414.35411.09001.09001.0857
C23.64451.55362.38531.43252.23931.08731.08732.21002.21003.99043.99044.3727
C33.68061.55361.46622.34522.19702.22402.22401.08921.08924.23394.23394.0411
N42.48082.38531.46622.24911.26283.13553.13552.10502.10503.17103.17102.6297
O52.41321.43252.34522.24911.35522.05292.05293.10053.10052.68802.68803.3213
C61.50842.23932.19701.26281.35522.96932.96932.94012.94012.13562.13562.1336
H74.28091.08732.22403.13552.05292.96931.77312.40162.98144.38184.72535.0436
H84.28091.08732.22403.13552.05292.96931.77312.98142.40164.72534.38185.0436
H94.35412.21001.08922.10503.10052.94012.40162.98141.76034.74905.06544.6241
H104.35412.21001.08922.10503.10052.94012.98142.40161.76035.06544.74904.6241
H111.09003.99044.23393.17102.68802.13564.38184.72534.74905.06541.76441.7832
H121.09003.99044.23393.17102.68802.13564.72534.38185.06544.74901.76441.7832
H131.08574.37274.04112.62973.32132.13365.04365.04364.62414.62411.78321.7832

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 126.851 C1 C6 O5 114.754
C2 C3 N4 104.314 C2 C3 H9 112.294
C2 C3 H10 112.294 C2 O5 C6 106.858
C3 C2 O5 103.437 C3 C2 H7 113.555
C3 C2 H8 113.555 C3 N4 C6 106.997
N4 C3 H9 110.053 N4 C3 H10 110.053
N4 C6 O5 118.395 O5 C2 H7 108.337
O5 C2 H8 108.337 C6 C1 H11 109.492
C6 C1 H12 109.492 C6 C1 H13 109.587
H7 C2 H8 109.242 H9 C3 H10 107.817
H11 C1 H12 108.072 H11 C1 H13 110.087
H12 C1 H13 110.087
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.193      
2 C -0.002      
3 C -0.091      
4 N 0.039      
5 O -0.282      
6 C -0.358      
7 H 0.130      
8 H 0.130      
9 H 0.121      
10 H 0.121      
11 H 0.119      
12 H 0.119      
13 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.071 -1.066 0.000 1.511
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.892 2.259 0.000
y 2.259 -29.410 0.000
z 0.000 0.000 -35.005
Traceless
 xyz
x -9.684 2.259 0.000
y 2.259 9.038 0.000
z 0.000 0.000 0.646
Polar
3z2-r21.292
x2-y2-12.482
xy2.259
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.120 0.738 0.000
y 0.738 8.073 0.000
z 0.000 0.000 5.217


<r2> (average value of r2) Å2
<r2> 122.784
(<r2>)1/2 11.081