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

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-286.048455
Energy at 298.15K 
Nuclear repulsion energy241.427089
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/cc-pVTZ
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 3219 3056 2.33      
2 A 3113 2955 47.05      
3 A 3101 2944 30.99      
4 A 3094 2938 5.11      
5 A 1728 1641 105.07      
6 A 1545 1467 2.22      
7 A 1517 1440 0.25      
8 A 1494 1419 10.02      
9 A 1427 1355 49.70      
10 A 1384 1314 8.70      
11 A 1337 1269 7.49      
12 A 1263 1200 100.42      
13 A 1090 1035 2.02      
14 A 1033 981 84.15      
15 A 993 943 2.11      
16 A 961 913 25.36      
17 A 917 871 22.11      
18 A 754 716 6.38      
19 A 668 634 2.52      
20 A 350 332 5.30      
21 A 3175 3014 26.76      
22 A 3173 3013 7.61      
23 A 3145 2986 2.64      
24 A 1494 1419 8.33      
25 A 1264 1200 0.08      
26 A 1230 1168 2.42      
27 A 1129 1072 0.04      
28 A 1070 1015 1.81      
29 A 837 794 0.34      
30 A 594 564 3.45      
31 A 241 229 10.27      
32 A 142 135 0.84      
33 A 60i 57i 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 24209.7 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 22987.1 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/cc-pVTZ
ABC
0.25875 0.11505 0.08335

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.337 2.121 0.000
C2 0.542 -1.497 0.000
C3 -0.985 -1.288 0.000
N4 -1.171 0.171 0.000
O5 1.082 -0.157 0.000
C6 0.000 0.676 0.000
H7 0.907 -2.008 0.887
H8 0.907 -2.008 -0.887
H9 -1.463 -1.714 0.880
H10 -1.463 -1.714 -0.880
H11 0.932 2.363 0.879
H12 0.932 2.363 -0.879
H13 -0.576 2.705 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.62403.65632.46482.39691.48404.26174.26174.32714.32711.08821.08821.0840
C23.62401.54112.39041.44522.23941.08711.08712.20042.20043.97793.97794.3485
C33.65631.54111.47052.35672.19692.21022.21021.08841.08844.21604.21604.0139
N42.46482.39041.47052.27671.27483.13843.13842.10072.10073.16173.16172.6030
O52.39691.44522.35672.27671.36572.06042.06043.11133.11132.67292.67293.3080
C61.48402.23942.19691.27481.36572.96862.96862.93722.93722.11812.11812.1096
H74.26171.08712.21023.13842.06042.96861.77492.38822.97104.37114.71445.0201
H84.26171.08712.21023.13842.06042.96861.77492.97102.38824.71444.37115.0201
H94.32712.20041.08842.10073.11132.93722.38822.97101.75974.72845.04484.5924
H104.32712.20041.08842.10073.11132.93722.97102.38821.75975.04484.72844.5924
H111.08823.97794.21603.16172.67292.11814.37114.71444.72845.04481.75721.7785
H121.08823.97794.21603.16172.67292.11814.71444.37115.04484.72841.75721.7785
H131.08404.34854.01392.60303.30802.10965.02015.02014.59244.59241.77851.7785

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 126.453 C1 C6 O5 114.453
C2 C3 N4 105.045 C2 C3 H9 112.474
C2 C3 H10 112.474 C2 O5 C6 105.600
C3 C2 O5 104.169 C3 C2 H7 113.349
C3 C2 H8 113.349 C3 N4 C6 106.091
N4 C3 H9 109.452 N4 C3 H10 109.452
N4 C6 O5 119.095 O5 C2 H7 108.079
O5 C2 H8 108.079 C6 C1 H11 109.907
C6 C1 H12 109.907 C6 C1 H13 109.485
H7 C2 H8 109.439 H9 C3 H10 107.883
H11 C1 H12 107.680 H11 C1 H13 109.921
H12 C1 H13 109.921
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability