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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: PBEPBE/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 PBEPBE/3-21G*
 hartrees
Energy at 0K-244.422021
Energy at 298.15K-244.426487
HF Energy-244.422021
Nuclear repulsion energy159.205070
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 PBEPBE/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' 3275 3122 0.21      
2 A' 3257 3106 0.60      
3 A' 3238 3087 1.23      
4 A' 1477 1408 4.15      
5 A' 1423 1357 11.78      
6 A' 1286 1226 14.12      
7 A' 1224 1167 0.06      
8 A' 1120 1068 10.29      
9 A' 1032 984 3.29      
10 A' 1004 957 11.29      
11 A' 955 911 14.30      
12 A' 873 832 13.83      
13 A' 853 813 30.45      
14 A" 874 833 1.84      
15 A" 807 770 48.35      
16 A" 758 722 37.30      
17 A" 644 614 16.92      
18 A" 605 577 10.63      

Unscaled Zero Point Vibrational Energy (zpe) 12351.9 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 11777.6 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 PBEPBE/3-21G*
ABC
0.31844 0.30809 0.15659

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.122 0.311 0.000
C2 0.000 1.145 0.000
N3 1.135 0.475 0.000
C4 0.769 -0.899 0.000
C5 -0.601 -0.999 0.000
H6 -0.169 2.215 0.000
H7 1.508 -1.691 0.000
H8 -1.311 -1.815 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.39872.26372.24541.40982.12943.30582.1340
C21.39871.31852.18472.22731.08243.21243.2376
N32.26371.31851.42232.27792.17422.19753.3508
C42.24542.18471.42231.37393.25221.08322.2726
C51.40982.22732.27791.37393.24282.22041.0812
H62.12941.08242.17423.25223.24284.25034.1883
H73.30583.21242.19751.08322.22044.25032.8225
H82.13403.23763.35082.27261.08124.18832.8225

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 112.798 O1 C2 H6 117.668
O1 C5 C4 107.530 O1 C5 H8 117.279
C2 O1 C5 104.942 C2 N3 C4 105.642
N3 C2 H6 129.534 N3 C4 C5 109.088
N3 C4 H7 122.005 C4 C5 H8 135.191
C5 C4 H7 128.907
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.409      
2 C 0.232      
3 N -0.461      
4 C -0.086      
5 C -0.001      
6 H 0.259      
7 H 0.225      
8 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.111 -0.901 0.000 1.430
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.338 -1.143 0.000
y -1.143 -22.022 0.000
z 0.000 0.000 -30.123
Traceless
 xyz
x -5.265 -1.143 0.000
y -1.143 8.708 0.000
z 0.000 0.000 -3.443
Polar
3z2-r2-6.886
x2-y2-9.316
xy-1.143
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.373 -0.009 0.000
y -0.009 6.434 0.000
z 0.000 0.000 1.897


<r2> (average value of r2) Å2
<r2> 78.675
(<r2>)1/2 8.870