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

using model chemistry: HF/CEP-121G*

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-121G*
 hartrees
Energy at 0K-51.409405
Energy at 298.15K-51.418603
Nuclear repulsion energy131.178071
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-121G*
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 3325 3004 16.77      
2 A 3242 2929 80.19      
3 A 3216 2906 67.79      
4 A 3210 2900 23.21      
5 A 1901 1717 238.61      
6 A 1673 1511 1.59      
7 A 1646 1487 0.50      
8 A 1610 1455 7.46      
9 A 1560 1409 49.84      
10 A 1516 1370 8.06      
11 A 1478 1335 34.78      
12 A 1361 1229 142.58      
13 A 1190 1075 7.14      
14 A 1141 1031 115.51      
15 A 1073 970 0.59      
16 A 1031 931 39.38      
17 A 989 893 20.43      
18 A 820 741 7.19      
19 A 694 627 3.44      
20 A 368 333 6.49      
21 A 3293 2975 80.76      
22 A 3275 2959 23.39      
23 A 3249 2935 19.08      
24 A 1607 1452 7.35      
25 A 1357 1226 0.02      
26 A 1327 1199 4.30      
27 A 1227 1108 0.21      
28 A 1161 1049 1.44      
29 A 893 807 1.99      
30 A 649 586 9.35      
31 A 256 231 11.87      
32 A 155 140 0.88      
33 A 63 57 0.12      

Unscaled Zero Point Vibrational Energy (zpe) 25778.3 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 23288.2 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-121G*
ABC
0.26268 0.11449 0.08343

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.370 2.128 0.000
C2 0.505 -1.507 0.000
C3 -1.026 -1.266 0.000
N4 -1.161 0.193 0.000
O5 1.050 -0.183 0.000
C6 0.000 0.673 0.000
H7 0.863 -2.024 0.883
H8 0.863 -2.024 -0.883
H9 -1.511 -1.685 0.876
H10 -1.511 -1.685 -0.876
H11 0.967 2.354 0.878
H12 0.967 2.354 -0.878
H13 -0.528 2.730 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.63773.66972.46732.40931.50154.27334.27334.34094.34091.08571.08571.0811
C23.63771.55012.38051.43152.23781.08381.08382.20572.20573.98683.98684.3613
C33.66971.55011.46512.34102.19332.21872.21871.08571.08574.22474.22474.0266
N42.46732.38051.46512.24251.25613.12903.12902.10162.10163.15763.15762.6145
O52.40931.43152.34102.24251.35462.04992.04993.09523.09522.68642.68643.3131
C61.50152.23782.19331.25611.35462.96592.96592.93412.93412.12922.12922.1238
H74.27331.08382.21873.12902.04992.96591.76592.39822.97434.37944.72015.0312
H84.27331.08382.21873.12902.04992.96591.76592.97432.39824.72014.37945.0312
H94.34092.20571.08572.10163.09522.93412.39822.97431.75264.73885.05304.6069
H104.34092.20571.08572.10163.09522.93412.97432.39821.75265.05304.73884.6069
H111.08573.98684.22473.15762.68642.12924.37944.72014.73885.05301.75581.7743
H121.08573.98684.22473.15762.68642.12924.72014.37945.05304.73881.75581.7743
H131.08114.36134.02662.61453.31312.12385.03125.03124.60694.60691.77431.7743

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 126.714 C1 C6 O5 114.934
C2 C3 N4 104.244 C2 C3 H9 112.412
C2 C3 H10 112.412 C2 O5 C6 106.840
C3 C2 O5 103.398 C3 C2 H7 113.598
C3 C2 H8 113.598 C3 N4 C6 107.167
N4 C3 H9 110.067 N4 C3 H10 110.067
N4 C6 O5 118.351 O5 C2 H7 108.381
O5 C2 H8 108.381 C6 C1 H11 109.725
C6 C1 H12 109.725 C6 C1 H13 109.566
H7 C2 H8 109.118 H9 C3 H10 107.630
H11 C1 H12 107.917 H11 C1 H13 109.943
H12 C1 H13 109.943
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.610      
2 C -0.083      
3 C -0.251      
4 N -0.188      
5 O -0.369      
6 C 0.261      
7 H 0.166      
8 H 0.166      
9 H 0.170      
10 H 0.170      
11 H 0.183      
12 H 0.183      
13 H 0.203      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.024 -1.078 0.000 1.487
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.870 2.241 0.000
y 2.241 -29.455 0.000
z 0.000 0.000 -35.237
Traceless
 xyz
x -9.525 2.241 0.000
y 2.241 9.099 0.000
z 0.000 0.000 0.426
Polar
3z2-r20.851
x2-y2-12.416
xy2.241
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.461 0.754 0.000
y 0.754 8.491 0.000
z 0.000 0.000 5.861


<r2> (average value of r2) Å2
<r2> 122.372
(<r2>)1/2 11.062