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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: QCISD/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-245.530620
Energy at 298.15K-245.535278
HF Energy-244.655552
Nuclear repulsion energy163.434877
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 QCISD/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3349 3173 0.60      
2 A' 3323 3148 0.20      
3 A' 3315 3141 2.34      
4 A' 1620 1535 15.55      
5 A' 1582 1499 23.70      
6 A' 1385 1312 5.91      
7 A' 1299 1230 0.31      
8 A' 1209 1145 35.09      
9 A' 1134 1074 10.74      
10 A' 1130 1071 8.59      
11 A' 1093 1036 30.96      
12 A' 936 887 15.19      
13 A' 921 873 18.53      
14 A" 896 849 2.73      
15 A" 878 832 12.82      
16 A" 790 748 27.04      
17 A" 667 632 25.45      
18 A" 627 594 4.29      

Unscaled Zero Point Vibrational Energy (zpe) 13076.4 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 12388.6 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 QCISD/6-31G(2df,p)
ABC
0.33794 0.32291 0.16513

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.104 0.310 0.000
C2 0.000 1.090 0.000
N3 1.129 0.466 0.000
C4 0.752 -0.876 0.000
C5 -0.596 -0.959 0.000
H6 -0.170 2.153 0.000
H7 1.480 -1.668 0.000
H8 -1.314 -1.759 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.35142.23832.20241.36672.06593.25462.0797
C21.35141.29002.10452.13361.07663.13033.1369
N32.23831.29001.39362.23742.12912.16293.3038
C42.20242.10451.39361.35073.16581.07642.2463
C51.36672.13362.23741.35073.14072.19441.0745
H62.06591.07662.12913.16583.14074.16234.0755
H73.25463.13032.16291.07642.19444.16232.7952
H82.07973.13693.30382.24631.07454.07552.7952

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 115.842 O1 C2 H6 116.156
O1 C5 C4 108.277 O1 C5 H8 116.327
C2 O1 C5 103.430 C2 N3 C4 103.226
N3 C2 H6 128.003 N3 C4 C5 109.225
N3 C4 H7 121.718 C4 C5 H8 135.395
C5 C4 H7 129.057
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability