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: BLYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at BLYP/cc-pVDZ
 hartrees
Energy at 0K-286.501086
Energy at 298.15K-286.509814
Nuclear repulsion energy237.958406
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 BLYP/cc-pVDZ
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 3084 3089 5.91      
2 A 2967 2972 15.45      
3 A 2962 2967 54.90      
4 A 2946 2950 50.66      
5 A 1666 1669 113.13      
6 A 1453 1456 1.30      
7 A 1429 1431 0.41      
8 A 1408 1411 7.93      
9 A 1357 1359 26.34      
10 A 1316 1318 17.23      
11 A 1278 1280 13.56      
12 A 1192 1194 80.41      
13 A 1031 1033 1.29      
14 A 937 938 80.35      
15 A 933 935 1.33      
16 A 905 906 28.17      
17 A 863 865 22.13      
18 A 730 731 5.07      
19 A 640 641 1.76      
20 A 335 335 4.74      
21 A 3021 3026 10.78      
22 A 3007 3012 51.20      
23 A 2970 2975 9.00      
24 A 1406 1408 7.26      
25 A 1195 1197 0.14      
26 A 1157 1159 1.42      
27 A 1074 1076 0.00      
28 A 1018 1019 2.46      
29 A 796 797 0.05      
30 A 569 570 3.17      
31 A 227 227 8.42      
32 A 137 137 1.20      
33 A 70 70 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 23038.6 cm-1
Scaled (by 1.0016) Zero Point Vibrational Energy (zpe) 23075.4 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 BLYP/cc-pVDZ
ABC
0.25144 0.11188 0.08104

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.338 2.149 0.000
C2 0.547 -1.523 0.000
C3 -1.000 -1.300 0.000
N4 -1.182 0.175 0.000
O5 1.100 -0.162 0.000
C6 0.000 0.686 0.000
H7 0.925 -2.045 0.902
H8 0.925 -2.045 -0.902
H9 -1.494 -1.738 0.893
H10 -1.494 -1.738 -0.893
H11 0.947 2.404 0.892
H12 0.947 2.404 -0.892
H13 -0.590 2.746 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.67773.69922.49172.43291.50154.32964.32964.38864.38861.10931.10931.1034
C23.67771.56252.42361.46892.27561.10881.10882.23782.23784.04664.04664.4174
C33.69921.56251.48632.38772.22332.25262.25261.11061.11064.27804.27804.0663
N42.49172.42361.48632.30671.28813.19133.19132.13382.13383.20883.20882.6381
O52.43291.46892.38772.30671.38852.09512.09513.16313.16312.72062.72063.3627
C61.50152.27562.22331.28811.38853.02113.02112.98382.98382.15472.15472.1425
H74.32961.10882.25263.19132.09513.02111.80452.43843.02804.44864.79685.1047
H84.32961.10882.25263.19132.09513.02111.80453.02802.43844.79684.44865.1047
H94.38862.23781.11062.13383.16312.98382.43843.02801.78614.80715.12784.6601
H104.38862.23781.11062.13383.16312.98383.02802.43841.78615.12784.80714.6601
H111.10934.04664.27803.20882.72062.15474.44864.79684.80715.12781.78361.8091
H121.10934.04664.27803.20882.72062.15474.79684.44865.12784.80711.78361.8091
H131.10344.41744.06632.63813.36272.14255.10475.10474.66014.66011.80911.8091

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 126.390 C1 C6 O5 114.616
C2 C3 N4 105.273 C2 C3 H9 112.587
C2 C3 H10 112.587 C2 O5 C6 105.540
C3 C2 O5 103.893 C3 C2 H7 113.887
C3 C2 H8 113.887 C3 N4 C6 106.300
N4 C3 H9 109.665 N4 C3 H10 109.665
N4 C6 O5 118.994 O5 C2 H7 107.918
O5 C2 H8 107.918 C6 C1 H11 110.336
C6 C1 H12 110.336 C6 C1 H13 109.723
H7 C2 H8 108.913 H9 C3 H10 107.051
H11 C1 H12 107.018 H11 C1 H13 109.694
H12 C1 H13 109.694
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.081      
2 C 0.134      
3 C 0.065      
4 N -0.217      
5 O -0.252      
6 C 0.046      
7 H 0.014      
8 H 0.014      
9 H 0.010      
10 H 0.010      
11 H 0.033      
12 H 0.033      
13 H 0.029      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.884 -0.764 0.000 1.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.612 1.645 0.000
y 1.645 -30.468 0.000
z 0.000 0.000 -35.358
Traceless
 xyz
x -7.699 1.645 0.000
y 1.645 7.517 0.000
z 0.000 0.000 0.182
Polar
3z2-r20.363
x2-y2-10.144
xy1.645
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.800 0.717 0.000
y 0.717 9.860 0.000
z 0.000 0.000 5.931


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000