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

using model chemistry: MP2/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 MP2/CEP-31G*
 hartrees
Energy at 0K-52.200292
Energy at 298.15K-52.209969
Nuclear repulsion energy129.025909
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/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 3237 3073 8.66      
2 A 3201 3039 11.70      
3 A 3200 3038 53.85      
4 A 3172 3011 5.19      
5 A 3121 2963 63.97      
6 A 3108 2951 46.98      
7 A 3108 2951 7.31      
8 A 1724 1637 108.04      
9 A 1555 1477 1.98      
10 A 1530 1452 0.26      
11 A 1505 1429 9.34      
12 A 1503 1427 11.03      
13 A 1449 1376 39.77      
14 A 1389 1319 14.41      
15 A 1352 1284 14.68      
16 A 1264 1200 2.54      
17 A 1261 1197 104.64      
18 A 1223 1161 1.49      
19 A 1124 1067 0.07      
20 A 1098 1042 1.76      
21 A 1078 1023 2.27      
22 A 1034 981 77.91      
23 A 992 942 11.30      
24 A 966 917 30.36      
25 A 907 861 25.24      
26 A 839 796 0.14      
27 A 743 706 5.96      
28 A 658 624 3.81      
29 A 575 546 3.58      
30 A 342 324 5.95      
31 A 239 227 13.57      
32 A 139 132 0.99      

Unscaled Zero Point Vibrational Energy (zpe) 24316.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 23086.1 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 MP2/CEP-31G*
ABC
0.25094 0.11200 0.08107

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.179 0.008 0.010
C2 -1.402 -0.786 0.070
C3 -1.450 0.767 -0.052
N4 -0.030 1.205 0.044
O5 0.020 -1.106 -0.074
C6 0.671 0.115 0.002
H7 -1.726 -1.147 1.061
H8 -1.948 -1.318 -0.724
H9 -2.040 1.233 0.754
H10 -1.856 1.098 -1.024
H11 2.505 -0.584 0.882
H12 2.516 -0.510 -0.904
H13 2.613 1.018 0.054

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.66873.70742.51192.43121.51134.20584.39674.45574.30571.10331.10341.0999
C23.66871.55802.41791.46452.26181.10361.10092.22482.22543.99594.04684.4021
C33.70741.55801.48902.38012.21962.23062.24681.10251.10474.28214.25224.0720
N42.51192.41791.48902.31381.29653.07253.26122.13252.11843.21363.21212.6495
O52.43121.46452.38012.31381.38562.08272.08333.22443.04632.71322.69743.3546
C61.51132.26182.21961.29651.38562.90883.07283.02802.89982.15062.14782.1423
H74.20581.10362.23063.07252.08272.90881.80752.41943.06664.27234.71834.9529
H84.39671.10092.24683.26122.08333.07281.80752.95012.43714.79034.54015.1835
H94.45572.22481.10252.13253.22443.02802.41942.95011.79254.89685.15214.7108
H104.30572.22541.10472.11843.04632.89983.06662.43711.79255.04824.66014.5982
H111.10333.99594.28213.21362.71322.15064.27234.79034.89685.04821.78691.8069
H121.10344.04684.25223.21212.69742.14784.71834.54015.15214.66011.78691.8057
H131.09994.40214.07202.64953.35462.14234.95295.18354.71084.59821.80691.8057

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 126.752 C1 C6 O5 114.049
C2 C3 N4 105.014 C2 C3 H9 112.363
C2 C3 H10 112.280 C2 O5 C6 105.008
C3 C2 O5 103.860 C3 C2 H7 112.756
C3 C2 H8 114.252 C3 N4 C6 105.449
N4 C3 H9 109.847 N4 C3 H10 108.618
N4 C6 O5 119.195 O5 C2 H7 107.551
O5 C2 H8 107.756 C6 C1 H11 109.699
C6 C1 H12 109.465 C6 C1 H13 109.241
H7 C2 H8 110.146 H9 C3 H10 108.609
H11 C1 H12 108.148 H11 C1 H13 110.195
H12 C1 H13 110.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability