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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-243.747771
Energy at 298.15K-243.752299
HF Energy-243.243700
Nuclear repulsion energy158.876660
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 MP2/3-21G*
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' 3362 3198 0.09      
2 A' 3346 3183 0.14      
3 A' 3330 3168 0.57      
4 A' 1497 1424 2.85      
5 A' 1436 1366 5.12      
6 A' 1312 1248 23.04      
7 A' 1288 1225 3.44      
8 A' 1168 1111 11.53      
9 A' 1042 991 23.10      
10 A' 1027 977 6.28      
11 A' 987 939 21.36      
12 A' 886 843 7.12      
13 A' 875 832 34.15      
14 A" 865 823 0.01      
15 A" 838 797 40.72      
16 A" 775 737 37.21      
17 A" 657 625 19.03      
18 A" 617 587 14.20      

Unscaled Zero Point Vibrational Energy (zpe) 12652.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 12036.2 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 MP2/3-21G*
ABC
0.31632 0.30721 0.15585

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.122 0.312 0.000
C2 0.000 1.152 0.000
N3 1.136 0.477 0.000
C4 0.768 -0.906 0.000
C5 -0.602 -1.003 0.000
H6 -0.167 2.213 0.000
H7 1.501 -1.693 0.000
H8 -1.306 -1.813 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.40152.26422.24941.41442.12763.30202.1335
C21.40151.32132.19642.23671.07463.21633.2398
N32.26421.32131.43052.28182.17092.20003.3476
C42.24942.19641.43051.37343.25631.07512.2644
C51.41442.23672.28181.37343.24512.21301.0740
H62.12761.07462.17093.25633.24514.24724.1845
H73.30203.21632.20001.07512.21304.24722.8098
H82.13353.23983.34762.26441.07404.18452.8098

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 112.487 O1 C2 H6 117.859
O1 C5 C4 107.568 O1 C5 H8 117.387
C2 O1 C5 105.179 C2 N3 C4 105.845
N3 C2 H6 129.654 N3 C4 C5 108.920
N3 C4 H7 122.170 C4 C5 H8 135.044
C5 C4 H7 128.910
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability