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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-285.698566
Energy at 298.15K 
HF Energy-284.847969
Nuclear repulsion energy240.494802
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 MP2/6-31G*
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' 3245 3060 3.11      
2 A' 3133 2955 39.43      
3 A' 3123 2945 9.46      
4 A' 3121 2943 26.57      
5 A' 1756 1656 92.64      
6 A' 1589 1498 0.77      
7 A' 1563 1474 0.12      
8 A' 1543 1455 9.59      
9 A' 1469 1385 35.81      
10 A' 1412 1331 17.69      
11 A' 1371 1293 9.71      
12 A' 1288 1214 107.21      
13 A' 1113 1050 1.09      
14 A' 1043 984 84.63      
15 A' 1006 949 1.61      
16 A' 977 921 26.40      
17 A' 922 869 20.32      
18 A' 758 715 6.23      
19 A' 670 632 3.55      
20 A' 352 332 5.83      
21 A" 3205 3022 5.11      
22 A" 3196 3014 36.39      
23 A" 3168 2987 3.85      
24 A" 1536 1449 9.37      
25 A" 1281 1208 0.13      
26 A" 1242 1171 1.27      
27 A" 1149 1084 0.01      
28 A" 1093 1031 2.75      
29 A" 858 809 0.36      
30 A" 587 554 5.70      
31 A" 241 227 10.97      
32 A" 145 137 1.11      
33 A" 53i 50i 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 24550.8 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 23151.4 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 MP2/6-31G*
ABC
0.25647 0.11429 0.08274

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.343 2.124 0.000
C2 0.541 -1.502 0.000
C3 -0.991 -1.285 0.000
N4 -1.176 0.173 0.000
O5 1.087 -0.160 0.000
C6 0.000 0.677 0.000
H7 0.909 -2.017 0.891
H8 0.909 -2.017 -0.891
H9 -1.474 -1.714 0.883
H10 -1.474 -1.714 -0.883
H11 0.940 2.368 0.883
H12 0.940 2.368 -0.883
H13 -0.575 2.711 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.63193.66122.47312.40301.48734.27394.27394.33744.33741.09311.09311.0893
C23.63191.54752.39941.44862.24551.09291.09292.21062.21063.98943.98944.3580
C33.66121.54751.47012.36332.19842.22292.22291.09431.09434.22514.22514.0172
N42.47312.39941.47012.28841.27983.15313.15312.10462.10463.17403.17402.6076
O52.40301.44862.36332.28841.37272.06702.06703.12333.12332.68212.68213.3175
C61.48732.24552.19841.27981.37272.97992.97992.94442.94442.12632.12632.1130
H74.27391.09292.22293.15312.06702.97991.78162.40292.98694.38514.73035.0346
H84.27391.09292.22293.15312.06702.97991.78162.98692.40294.73034.38515.0346
H94.33742.21061.09432.10463.12332.94442.40292.98691.76684.74195.06024.6002
H104.33742.21061.09432.10463.12332.94442.98692.40291.76685.06024.74194.6002
H111.09313.98944.22513.17402.68212.12634.38514.73034.74195.06021.76611.7865
H121.09313.98944.22513.17402.68212.12634.73034.38515.06024.74191.76611.7865
H131.08934.35804.01722.60763.31752.11305.03465.03464.60024.60021.78651.7865

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 126.531 C1 C6 O5 114.264
C2 C3 N4 105.306 C2 C3 H9 112.474
C2 C3 H10 112.474 C2 O5 C6 105.451
C3 C2 O5 104.093 C3 C2 H7 113.560
C3 C2 H8 113.560 C3 N4 C6 105.945
N4 C3 H9 109.438 N4 C3 H10 109.438
N4 C6 O5 119.205 O5 C2 H7 108.022
O5 C2 H8 108.022 C6 C1 H11 110.040
C6 C1 H12 110.040 C6 C1 H13 109.212
H7 C2 H8 109.195 H9 C3 H10 107.661
H11 C1 H12 107.762 H11 C1 H13 109.886
H12 C1 H13 109.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability