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

using model chemistry: MP2/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-285.316971
Energy at 298.15K-285.325734
HF Energy-284.741218
Nuclear repulsion energy233.521801
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/LANL2DZ
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 3175 3058 10.97      
2 A 3092 2978 53.99      
3 A 3076 2963 34.81      
4 A 3045 2933 14.87      
5 A 1634 1573 58.60      
6 A 1550 1493 2.09      
7 A 1533 1476 5.82      
8 A 1527 1471 14.05      
9 A 1464 1410 15.57      
10 A 1355 1305 8.46      
11 A 1342 1293 0.69      
12 A 1219 1174 101.10      
13 A 1076 1036 4.44      
14 A 944 909 1.07      
15 A 912 878 31.85      
16 A 879 847 68.90      
17 A 813 783 37.71      
18 A 715 689 9.89      
19 A 632 609 6.06      
20 A 332 319 7.64      
21 A 3175 3058 42.95      
22 A 3143 3027 0.82      
23 A 3142 3026 19.45      
24 A 1520 1464 12.67      
25 A 1250 1204 0.35      
26 A 1179 1136 0.79      
27 A 1122 1081 1.17      
28 A 1099 1058 2.17      
29 A 847 816 0.01      
30 A 553 533 5.61      
31 A 232 224 16.19      
32 A 124 120 1.24      
33 A 103 100 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 23902.2 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 23020.2 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 MP2/LANL2DZ
ABC
0.24401 0.10690 0.07768

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.371 2.189 0.000
C2 0.533 -1.577 0.000
C3 -1.028 -1.328 0.000
N4 -1.200 0.193 0.000
O5 1.124 -0.178 0.000
C6 0.000 0.725 0.000
H7 0.897 -2.081 0.907
H8 0.897 -2.081 -0.907
H9 -1.520 -1.733 0.899
H10 -1.520 -1.733 -0.899
H11 0.974 2.426 0.893
H12 0.974 2.426 -0.893
H13 -0.547 2.795 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.77043.78562.54042.48391.51064.39774.39774.44634.44631.10281.10281.0998
C23.77041.58062.47671.51982.36331.09991.09992.24602.24604.12524.12524.5039
C33.78561.58061.53052.44052.29632.25802.25801.10161.10164.34704.34704.1513
N42.54042.47671.53052.35301.31253.22373.22372.14932.14933.24143.24142.6830
O52.48391.51982.44052.35301.44162.12092.12093.19663.19662.75622.75623.4102
C61.51062.36332.29631.31251.44163.08293.08293.02673.02672.15342.15342.1412
H74.39771.09992.25803.22372.12093.08291.81402.44243.03744.50784.85375.1662
H84.39771.09992.25803.22372.12093.08291.81403.03742.44244.85374.50785.1662
H94.44632.24601.10162.14933.19663.02672.44243.03741.79754.84925.16964.7181
H104.44632.24601.10162.14933.19663.02673.03742.44241.79755.16964.84924.7181
H111.10284.12524.34703.24142.75622.15344.50784.85374.84925.16961.78531.8017
H121.10284.12524.34703.24142.75622.15344.85374.50785.16964.84921.78531.8017
H131.09984.50394.15132.68303.41022.14125.16625.16624.71814.71811.80171.8017

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 128.139 C1 C6 O5 114.555
C2 C3 N4 105.505 C2 C3 H9 112.504
C2 C3 H10 112.504 C2 O5 C6 105.860
C3 C2 O5 103.830 C3 C2 H7 113.574
C3 C2 H8 113.574 C3 N4 C6 107.499
N4 C3 H9 108.384 N4 C3 H10 108.384
N4 C6 O5 117.306 O5 C2 H7 107.029
O5 C2 H8 107.029 C6 C1 H11 109.994
C6 C1 H12 109.994 C6 C1 H13 109.207
H7 C2 H8 111.101 H9 C3 H10 109.342
H11 C1 H12 108.087 H11 C1 H13 109.772
H12 C1 H13 109.772
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability