return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: PBEPBE/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-245.888246
Energy at 298.15K-245.892769
HF Energy-245.888246
Nuclear repulsion energy162.545030
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/Def2TZVPP
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' 3223 3184 0.40      
2 A' 3198 3160 0.58      
3 A' 3186 3148 2.44      
4 A' 1522 1504 8.86      
5 A' 1481 1463 24.96      
6 A' 1317 1301 3.00      
7 A' 1230 1215 0.21      
8 A' 1125 1111 15.26      
9 A' 1105 1091 8.56      
10 A' 1057 1045 9.70      
11 A' 1046 1033 32.76      
12 A' 895 884 21.52      
13 A' 885 874 13.33      
14 A" 847 837 2.79      
15 A" 799 789 28.63      
16 A" 734 726 30.82      
17 A" 650 642 22.60      
18 A" 613 605 3.96      

Unscaled Zero Point Vibrational Energy (zpe) 12455.6 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 12304.9 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/Def2TZVPP
ABC
0.33441 0.31953 0.16340

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.109 0.310 0.000
C2 0.000 1.103 0.000
N3 1.130 0.463 0.000
C4 0.758 -0.878 0.000
C5 -0.599 -0.966 0.000
H6 -0.169 2.175 0.000
H7 1.495 -1.675 0.000
H8 -1.320 -1.774 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.36292.24392.21321.37392.08783.27372.0947
C21.36291.29862.12112.15371.08523.15413.1650
N32.24391.29861.39152.24312.14902.16853.3174
C42.21322.12111.39151.36063.19061.08482.2633
C51.37392.15372.24311.36063.16982.21071.0827
H62.08781.08522.14903.19063.16984.19364.1128
H73.27373.15412.16851.08482.21074.19362.8164
H82.09473.16503.31742.26331.08274.11282.8164

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 114.916 O1 C2 H6 116.593
O1 C5 C4 108.062 O1 C5 H8 116.509
C2 O1 C5 103.800 C2 N3 C4 104.037
N3 C2 H6 128.491 N3 C4 C5 109.185
N3 C4 H7 121.773 C4 C5 H8 135.429
C5 C4 H7 129.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.155      
2 C 0.075      
3 N -0.200      
4 C -0.094      
5 C -0.024      
6 H 0.135      
7 H 0.119      
8 H 0.145      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.312 -0.779 0.000 1.526
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.296 -1.255 0.000
y -1.255 -23.033 0.000
z 0.000 0.000 -30.033
Traceless
 xyz
x -4.763 -1.255 0.000
y -1.255 7.632 0.000
z 0.000 0.000 -2.869
Polar
3z2-r2-5.738
x2-y2-8.263
xy-1.255
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.796 0.103 0.000
y 0.103 7.633 0.000
z 0.000 0.000 4.072


<r2> (average value of r2) Å2
<r2> 76.456
(<r2>)1/2 8.744