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: LSDA/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 LSDA/cc-pVDZ
 hartrees
Energy at 0K-285.078368
Energy at 298.15K-285.087107
Nuclear repulsion energy241.901005
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 LSDA/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 3130 3095 0.19      
2 A 3070 3036 1.31      
3 A 3031 2998 27.31      
4 A 2999 2966 9.10      
5 A 2993 2960 5.08      
6 A 2976 2944 38.06      
7 A 2963 2930 37.19      
8 A 1746 1726 129.34      
9 A 1434 1418 22.16      
10 A 1400 1385 1.12      
11 A 1387 1372 43.30      
12 A 1367 1352 12.49      
13 A 1361 1346 63.29      
14 A 1305 1290 2.10      
15 A 1264 1250 2.91      
16 A 1220 1207 47.34      
17 A 1181 1168 1.09      
18 A 1160 1147 1.24      
19 A 1073 1061 18.64      
20 A 1065 1053 0.01      
21 A 1045 1034 86.37      
22 A 997 987 5.07      
23 A 977 967 1.60      
24 A 943 933 7.66      
25 A 900 890 17.13      
26 A 799 790 1.15      
27 A 745 737 4.48      
28 A 673 665 2.96      
29 A 579 572 2.64      
30 A 335 332 5.29      
31 A 233 230 9.76      
32 A 135 134 1.46      
33 A 33 33 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 23258.6 cm-1
Scaled (by 0.989) Zero Point Vibrational Energy (zpe) 23002.8 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 LSDA/cc-pVDZ
ABC
0.25941 0.11602 0.08405

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.136 0.011 0.003
C2 1.378 -0.774 0.022
C3 1.415 0.762 -0.016
N4 0.026 1.177 0.015
O5 -0.017 -1.087 -0.024
C6 -0.667 0.105 0.001
H7 1.876 -1.260 -0.843
H8 1.802 -1.204 0.955
H9 1.905 1.158 -0.934
H10 1.968 1.200 0.844
H11 -2.488 -0.537 -0.895
H12 -2.485 -0.561 0.887
H13 -2.571 1.026 0.017

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.60113.63032.45672.38721.47264.29314.23014.30404.35441.10931.10931.1038
C23.60111.53702.37351.43062.22581.11011.11162.21902.21793.98023.96474.3396
C33.63031.53701.45022.33922.18342.23302.22711.11301.11174.20674.21693.9950
N42.45672.37351.45022.26491.27643.17773.11582.10472.11103.17593.17632.6013
O52.38721.43062.33922.26491.35802.06962.06913.09233.15002.67692.68313.3148
C61.47262.22582.18341.27641.35803.00672.95292.93172.97462.12862.13002.1151
H74.29311.11012.23303.17772.06963.00671.80032.42052.98454.42364.74345.0733
H84.23011.11162.22713.11582.06912.95291.80033.02672.41264.71914.33574.9974
H94.30402.21901.11302.10473.09232.93172.42053.02671.77954.70865.05424.5773
H104.35442.21791.11172.11103.15002.97462.98452.41261.77955.08834.78864.6161
H111.10933.98024.20673.17592.67692.12864.42364.71914.70865.08831.78181.8114
H121.10933.96474.21693.17632.68312.13004.74344.33575.05424.78861.78181.8119
H131.10384.33963.99502.60133.31482.11515.07334.99744.57734.61611.81141.8119

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 126.525 C1 C6 O5 114.932
C2 C3 N4 105.192 C2 C3 H9 112.747
C2 C3 H10 112.735 C2 O5 C6 105.884
C3 C2 O5 103.990 C3 C2 H7 114.069
C3 C2 H8 113.488 C3 N4 C6 106.234
N4 C3 H9 109.697 N4 C3 H10 110.271
N4 C6 O5 118.542 O5 C2 H7 108.431
O5 C2 H8 108.305 C6 C1 H11 110.266
C6 C1 H12 110.376 C6 C1 H13 109.526
H7 C2 H8 108.256 H9 C3 H10 106.234
H11 C1 H12 106.858 H11 C1 H13 109.868
H12 C1 H13 109.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.098      
2 C -0.009      
3 C -0.081      
4 N -0.189      
5 O -0.198      
6 C 0.003      
7 H 0.074      
8 H 0.074      
9 H 0.073      
10 H 0.072      
11 H 0.095      
12 H 0.095      
13 H 0.090      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.571 -1.105 -0.001 1.243
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.807 0.016 0.005
y 0.016 -40.570 -0.100
z 0.005 -0.100 -35.110
Traceless
 xyz
x 8.033 0.016 0.005
y 0.016 -8.112 -0.100
z 0.005 -0.100 0.078
Polar
3z2-r20.157
x2-y210.763
xy0.016
xz0.005
yz-0.100


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.838 0.391 -0.007
y 0.391 7.529 -0.026
z -0.007 -0.026 5.931


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