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

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-285.808771
Energy at 298.15K 
HF Energy-284.907455
Nuclear repulsion energy240.920247
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 MP2/6-311G*
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' 3221 3061 4.03      
2 A' 3114 2959 46.96      
3 A' 3101 2947 36.06      
4 A' 3096 2942 5.86      
5 A' 1738 1652 98.08      
6 A' 1566 1488 2.72      
7 A' 1541 1464 0.47      
8 A' 1517 1442 11.62      
9 A' 1449 1377 46.70      
10 A' 1404 1334 10.16      
11 A' 1358 1290 6.82      
12 A' 1275 1212 111.35      
13 A' 1103 1048 1.87      
14 A' 1041 989 83.67      
15 A' 1002 952 1.23      
16 A' 972 923 27.92      
17 A' 923 877 22.17      
18 A' 759 721 5.93      
19 A' 669 636 3.16      
20 A' 351 334 5.56      
21 A" 3179 3021 37.89      
22 A" 3176 3018 8.92      
23 A" 3148 2992 3.95      
24 A" 1511 1436 11.76      
25 A" 1272 1209 0.06      
26 A" 1243 1181 2.00      
27 A" 1140 1083 0.01      
28 A" 1078 1025 1.96      
29 A" 844 802 0.27      
30 A" 588 558 3.77      
31 A" 238 226 11.09      
32 A" 141 134 1.22      
33 A" 76i 72i 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 24340.2 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 23130.5 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 MP2/6-311G*
ABC
0.25734 0.11467 0.08303

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.341 2.121 0.000
C2 0.542 -1.497 0.000
C3 -0.990 -1.285 0.000
N4 -1.175 0.173 0.000
O5 1.085 -0.159 0.000
C6 0.000 0.673 0.000
H7 0.911 -2.009 0.891
H8 0.911 -2.009 -0.891
H9 -1.473 -1.711 0.884
H10 -1.473 -1.711 -0.884
H11 0.939 2.364 0.882
H12 0.939 2.364 -0.882
H13 -0.575 2.708 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.62383.65692.46862.39841.48804.26294.26294.33064.33061.09241.09241.0882
C23.62381.54722.39511.44402.23661.09171.09172.21072.21073.98063.98064.3512
C33.65691.54721.46912.36112.19372.22112.22111.09331.09334.22064.22064.0145
N42.46862.39511.46912.28411.27653.14683.14682.10172.10173.16953.16952.6054
O52.39841.44402.36112.28411.36742.06032.06033.11963.11962.67712.67713.3132
C61.48802.23662.19371.27651.36742.96882.96882.93782.93782.12602.12602.1150
H74.26291.09172.22113.14682.06032.96881.78252.40252.98714.37294.71875.0249
H84.26291.09172.22113.14682.06032.96881.78252.98712.40254.71874.37295.0249
H94.33062.21071.09332.10173.11962.93782.40252.98711.76764.73505.05344.5949
H104.33062.21071.09332.10173.11962.93782.98712.40251.76765.05344.73504.5949
H111.09243.98064.22063.16952.67712.12604.37294.71874.73505.05341.76351.7849
H121.09243.98064.22063.16952.67712.12604.71874.37295.05344.73501.76351.7849
H131.08824.35124.01452.60543.31322.11505.02495.02494.59494.59491.78491.7849

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 126.323 C1 C6 O5 114.205
C2 C3 N4 105.096 C2 C3 H9 112.564
C2 C3 H10 112.564 C2 O5 C6 105.384
C3 C2 O5 104.197 C3 C2 H7 113.511
C3 C2 H8 113.511 C3 N4 C6 105.851
N4 C3 H9 109.334 N4 C3 H10 109.334
N4 C6 O5 119.471 O5 C2 H7 107.880
O5 C2 H8 107.880 C6 C1 H11 110.012
C6 C1 H12 110.012 C6 C1 H13 109.388
H7 C2 H8 109.447 H9 C3 H10 107.875
H11 C1 H12 107.643 H11 C1 H13 109.884
H12 C1 H13 109.884
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability