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All results from a given calculation for C4H7NO (Oxazole, 4,5-dihydro-2-methyl-)

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-51.250206
Energy at 298.15K-51.259455
Nuclear repulsion energy129.414358
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 HF/CEP-31G
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 3366 3034 25.46      
2 A 3297 2972 77.47      
3 A 3270 2948 61.96      
4 A 3243 2924 29.45      
5 A 1868 1684 180.60      
6 A 1666 1502 2.70      
7 A 1647 1484 0.87      
8 A 1619 1459 12.89      
9 A 1570 1416 17.49      
10 A 1497 1350 15.13      
11 A 1470 1325 1.65      
12 A 1357 1223 145.08      
13 A 1192 1074 0.26      
14 A 1093 985 93.99      
15 A 1047 944 13.06      
16 A 1010 911 44.48      
17 A 958 864 30.07      
18 A 817 736 12.16      
19 A 691 622 6.88      
20 A 357 321 8.65      
21 A 3366 3034 88.63      
22 A 3321 2994 20.79      
23 A 3321 2993 33.70      
24 A 1615 1456 13.84      
25 A 1356 1222 0.07      
26 A 1301 1173 3.75      
27 A 1222 1102 0.35      
28 A 1188 1071 4.78      
29 A 901 812 0.37      
30 A 635 572 13.93      
31 A 259 234 19.11      
32 A 154 138 1.39      
33 A 118 107 0.68      

Unscaled Zero Point Vibrational Energy (zpe) 25896.1 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 23342.7 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 HF/CEP-31G
ABC
0.25766 0.11050 0.08082

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.377 2.161 0.000
C2 0.502 -1.546 0.000
C3 -1.039 -1.287 0.000
N4 -1.169 0.195 0.000
O5 1.066 -0.192 0.000
C6 0.000 0.706 0.000
H7 0.859 -2.055 0.887
H8 0.859 -2.055 -0.887
H9 -1.530 -1.693 0.878
H10 -1.530 -1.693 -0.878
H11 0.977 2.385 0.880
H12 0.977 2.385 -0.880
H13 -0.519 2.770 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.70903.72772.50122.45171.50274.33544.33544.38914.38911.08811.08811.0838
C23.70901.56292.41301.46662.30761.08301.08302.21872.21874.05644.05644.4352
C33.72771.56291.48772.37292.24832.23142.23141.08511.08514.28094.28094.0903
N42.50122.41301.48772.26791.27603.15623.15622.11362.11363.19013.19012.6558
O52.45171.46662.37292.26791.39392.07382.07383.12473.12472.72492.72493.3595
C61.50272.30762.24831.27601.39393.02513.02512.97852.97852.13242.13242.1280
H74.33541.08302.23143.15622.07383.02511.77332.41622.99224.44234.78065.0960
H84.33541.08302.23143.15622.07383.02511.77332.99222.41624.78064.44235.0960
H94.38912.21871.08512.11363.12472.97852.41622.99221.75694.78755.10024.6598
H104.38912.21871.08512.11363.12472.97852.99222.41621.75695.10024.78754.6598
H111.08814.05644.28093.19012.72492.13244.44234.78064.78755.10021.75951.7778
H121.08814.05644.28093.19012.72492.13244.78064.44235.10024.78751.75951.7778
H131.08384.43524.09032.65583.35952.12805.09605.09604.65984.65981.77781.7778

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 128.168 C1 C6 O5 115.600
C2 C3 N4 104.528 C2 C3 H9 112.585
C2 C3 H10 112.585 C2 O5 C6 107.529
C3 C2 O5 103.074 C3 C2 H7 113.752
C3 C2 H8 113.752 C3 N4 C6 108.636
N4 C3 H9 109.478 N4 C3 H10 109.478
N4 C6 O5 116.232 O5 C2 H7 107.914
O5 C2 H8 107.914 C6 C1 H11 109.752
C6 C1 H12 109.752 C6 C1 H13 109.653
H7 C2 H8 109.905 H9 C3 H10 108.106
H11 C1 H12 107.904 H11 C1 H13 109.879
H12 C1 H13 109.879
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.197      
2 C -0.001      
3 C -0.147      
4 N 0.051      
5 O -0.376      
6 C -0.296      
7 H 0.144      
8 H 0.144      
9 H 0.140      
10 H 0.140      
11 H 0.125      
12 H 0.125      
13 H 0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.750 -1.405 0.000 1.592
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.973 2.791 0.000
y 2.791 -28.434 0.000
z 0.000 0.000 -35.367
Traceless
 xyz
x -12.072 2.791 0.000
y 2.791 11.235 0.000
z 0.000 0.000 0.837
Polar
3z2-r21.674
x2-y2-15.538
xy2.791
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.118 0.829 0.000
y 0.829 8.072 0.000
z 0.000 0.000 4.999


<r2> (average value of r2) Å2
<r2> 125.491
(<r2>)1/2 11.202