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 C4H7NO (Oxazole, 4,5-dihydro-2-methyl-)

using model chemistry: HSEh1PBE/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HSEh1PBE/cc-pVTZ
 hartrees
Energy at 0K-286.399652
Energy at 298.15K-286.408604
HF Energy-286.399652
Nuclear repulsion energy242.276006
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 HSEh1PBE/cc-pVTZ
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' 3182 3058 3.55      
2 A' 3071 2952 54.34      
3 A' 3064 2945 7.67      
4 A' 3055 2937 40.42      
5 A' 1767 1698 154.72      
6 A' 1527 1468 4.15      
7 A' 1501 1443 0.33      
8 A' 1471 1414 10.57      
9 A' 1422 1366 61.19      
10 A' 1382 1328 6.79      
11 A' 1338 1286 8.35      
12 A' 1264 1215 98.86      
13 A' 1096 1053 3.71      
14 A' 1044 1003 94.09      
15 A' 998 959 0.75      
16 A' 961 924 19.27      
17 A' 927 891 21.55      
18 A' 765 735 6.02      
19 A' 673 647 2.06      
20 A' 352 338 5.99      
21 A" 3125 3004 6.18      
22 A" 3118 2997 37.53      
23 A" 3083 2963 5.55      
24 A" 1469 1412 9.05      
25 A" 1252 1204 0.05      
26 A" 1222 1175 2.39      
27 A" 1123 1079 0.03      
28 A" 1062 1021 3.22      
29 A" 833 801 0.16      
30 A" 609 585 4.12      
31 A" 240 231 10.36      
32 A" 139 134 0.78      
33 A" 61 59 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 24097.9 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 23160.5 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 HSEh1PBE/cc-pVTZ
ABC
0.26161 0.11557 0.08391

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.333 2.117 0.000
C2 0.545 -1.489 0.000
C3 -0.985 -1.281 0.000
N4 -1.158 0.167 0.000
O5 1.073 -0.157 0.000
C6 0.000 0.672 0.000
H7 0.911 -2.007 0.887
H8 0.911 -2.007 -0.887
H9 -1.467 -1.714 0.879
H10 -1.467 -1.714 -0.879
H11 0.930 2.362 0.880
H12 0.930 2.362 -0.880
H13 -0.583 2.700 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.61193.64502.45502.39081.48304.25764.25764.32284.32281.09111.09111.0860
C23.61191.54422.37521.43282.22831.09061.09062.20712.20713.96863.96864.3381
C33.64501.54421.45842.34512.18752.21582.21581.09181.09184.20884.20884.0018
N42.45502.37521.45842.25411.26343.12953.12952.09872.09873.15463.15462.5979
O52.39081.43282.34512.25411.35552.05832.05833.10583.10582.67182.67183.3019
C61.48302.22832.18751.26341.35552.96542.96542.93522.93522.12022.12022.1104
H74.25761.09062.21583.12952.05832.96541.77422.39592.97674.36894.71285.0176
H84.25761.09062.21583.12952.05832.96541.77422.97672.39594.71284.36895.0176
H94.32282.20711.09182.09873.10582.93522.39592.97671.75874.72785.04464.5866
H104.32282.20711.09182.09873.10582.93522.97672.39591.75875.04464.72784.5866
H111.09113.96864.20883.15462.67182.12024.36894.71284.72785.04461.76051.7823
H121.09113.96864.20883.15462.67182.12024.71284.36895.04464.72781.76051.7823
H131.08604.33814.00182.59793.30192.11045.01765.01764.58664.58661.78231.7823

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 126.552 C1 C6 O5 114.694
C2 C3 N4 104.528 C2 C3 H9 112.573
C2 C3 H10 112.573 C2 O5 C6 106.072
C3 C2 O5 103.889 C3 C2 H7 113.357
C3 C2 H8 113.357 C3 N4 C6 106.756
N4 C3 H9 109.932 N4 C3 H10 109.932
N4 C6 O5 118.755 O5 C2 H7 108.551
O5 C2 H8 108.551 C6 C1 H11 109.975
C6 C1 H12 109.975 C6 C1 H13 109.502
H7 C2 H8 108.851 H9 C3 H10 107.298
H11 C1 H12 107.560 H11 C1 H13 109.903
H12 C1 H13 109.903
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.265      
2 C -0.005      
3 C -0.078      
4 N -0.240      
5 O -0.250      
6 C 0.172      
7 H 0.081      
8 H 0.081      
9 H 0.084      
10 H 0.084      
11 H 0.108      
12 H 0.108      
13 H 0.120      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.005 -0.815 0.000 1.294
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.888 1.794 0.000
y 1.794 -29.880 0.000
z 0.000 0.000 -35.110
Traceless
 xyz
x -8.393 1.794 0.000
y 1.794 8.119 0.000
z 0.000 0.000 0.275
Polar
3z2-r20.549
x2-y2-11.008
xy1.794
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.153 0.652 0.000
y 0.652 9.820 0.000
z 0.000 0.000 6.300


<r2> (average value of r2) Å2
<r2> 147.228
(<r2>)1/2 12.134