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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at G4
 hartrees
Energy at 0K-286.437646
Energy at 298.15K-286.430746
HF Energy-286.626150
Nuclear repulsion energy240.946356
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 B3LYP/6-31G(2df,p)
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 3166 3055 5.08      
2 A 3052 2946 55.09      
3 A 3050 2944 7.05      
4 A 3038 2931 43.63      
5 A 1746 1685 135.37      
6 A 1528 1474 1.47      
7 A 1504 1451 0.27      
8 A 1477 1425 8.28      
9 A 1417 1367 36.32      
10 A 1382 1333 13.27      
11 A 1337 1290 14.50      
12 A 1251 1208 96.43      
13 A 1083 1045 1.94      
14 A 1016 980 90.40      
15 A 982 947 2.76      
16 A 948 914 21.44      
17 A 912 880 17.25      
18 A 760 733 5.29      
19 A 664 641 2.07      
20 A 347 335 5.28      
21 A 3107 2999 8.23      
22 A 3099 2990 44.06      
23 A 3064 2957 6.11      
24 A 1475 1424 6.90      
25 A 1247 1203 0.06      
26 A 1217 1174 2.08      
27 A 1124 1085 0.01      
28 A 1065 1027 3.37      
29 A 829 800 0.34      
30 A 604 583 5.15      
31 A 239 230 9.09      
32 A 141 136 0.73      
33 A 88 85 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 23978.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23138.9 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 B3LYP/6-31G(2df,p)
ABC
0.25851 0.11432 0.08295

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.338 2.128 0.000
C2 0.545 -1.502 0.000
C3 -0.992 -1.288 0.000
N4 -1.166 0.172 0.000
O5 1.079 -0.160 0.000
C6 0.000 0.677 0.000
H7 0.916 -2.020 0.889
H8 0.916 -2.020 -0.889
H9 -1.475 -1.723 0.881
H10 -1.475 -1.723 -0.881
H11 0.938 2.377 0.881
H12 0.938 2.377 -0.881
H13 -0.577 2.718 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.63553.66582.46772.40491.49024.28104.28104.34694.34691.09461.09461.0893
C23.63551.55152.39311.44362.24561.09391.09392.21532.21533.99693.99694.3664
C33.66581.55151.47002.35742.20082.22812.22811.09541.09544.23474.23474.0274
N42.46772.39311.47002.26861.27043.15043.15042.11242.11243.17263.17262.6134
O52.40491.44362.35742.26861.36522.06762.06763.12103.12102.68962.68963.3205
C61.49022.24562.20081.27041.36522.98332.98332.95152.95152.13252.13252.1213
H74.28101.09392.22813.15042.06762.98331.77872.40932.99004.39674.73985.0463
H84.28101.09392.22813.15042.06762.98331.77872.99002.40934.73984.39675.0463
H94.34692.21531.09542.11243.12102.95152.40932.99001.76274.75755.07354.6158
H104.34692.21531.09542.11243.12102.95152.99002.40931.76275.07354.75754.6158
H111.09463.99694.23473.17262.68962.13254.39674.73984.75755.07351.76251.7857
H121.09463.99694.23473.17262.68962.13254.73984.39675.07354.75751.76251.7857
H131.08934.36644.02742.61343.32052.12135.04635.04634.61584.61581.78571.7857

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 126.611 C1 C6 O5 114.613
C2 C3 N4 104.408 C2 C3 H9 112.567
C2 C3 H10 112.567 C2 O5 C6 106.247
C3 C2 O5 103.777 C3 C2 H7 113.443
C3 C2 H8 113.443 C3 N4 C6 106.792
N4 C3 H9 110.125 N4 C3 H10 110.125
N4 C6 O5 118.776 O5 C2 H7 108.665
O5 C2 H8 108.665 C6 C1 H11 110.168
C6 C1 H12 110.168 C6 C1 H13 109.595
H7 C2 H8 108.584 H9 C3 H10 107.069
H11 C1 H12 107.364 H11 C1 H13 109.758
H12 C1 H13 109.758
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.468      
2 C -0.107      
3 C -0.182      
4 N -0.303      
5 O -0.253      
6 C 0.409      
7 H 0.117      
8 H 0.117      
9 H 0.115      
10 H 0.115      
11 H 0.144      
12 H 0.144      
13 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.985 -0.763 0.000 1.246
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 148.442
(<r2>)1/2 12.184