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

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-284.918431
Energy at 298.15K-284.927348
Nuclear repulsion energy237.823283
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 B3PW91/3-21G
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 3193 3069 2.67      
2 A 3102 2982 30.43      
3 A 3091 2972 29.05      
4 A 3077 2957 4.74      
5 A 1713 1647 95.22      
6 A 1565 1504 1.42      
7 A 1541 1481 2.80      
8 A 1530 1470 14.02      
9 A 1451 1394 23.75      
10 A 1365 1312 14.33      
11 A 1324 1273 1.53      
12 A 1239 1191 111.03      
13 A 1086 1044 1.00      
14 A 965 927 49.61      
15 A 931 895 1.60      
16 A 904 869 44.61      
17 A 873 840 17.12      
18 A 745 716 9.91      
19 A 656 631 3.29      
20 A 328 315 5.99      
21 A 3162 3039 33.17      
22 A 3135 3014 4.64      
23 A 3133 3011 1.39      
24 A 1536 1476 12.52      
25 A 1276 1227 0.12      
26 A 1205 1158 0.13      
27 A 1113 1070 4.77      
28 A 1090 1048 2.39      
29 A 832 800 0.01      
30 A 576 554 4.53      
31 A 236 227 14.51      
32 A 138 133 1.81      
33 A 119 115 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24114.3 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 23178.7 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 B3PW91/3-21G
ABC
0.25212 0.11140 0.08082

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.359 2.144 0.000
C2 0.530 -1.541 0.000
C3 -1.014 -1.302 0.000
N4 -1.175 0.195 0.000
O5 1.105 -0.167 0.000
C6 0.000 0.700 0.000
H7 0.883 -2.054 0.897
H8 0.883 -2.054 -0.897
H9 -1.498 -1.711 0.891
H10 -1.498 -1.711 -0.891
H11 0.961 2.378 0.885
H12 0.961 2.378 -0.885
H13 -0.554 2.742 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.68943.70942.48002.42881.48834.32474.32474.37054.37051.09571.09571.0905
C23.68941.56182.43271.48952.30271.09211.09212.22172.22174.04084.04084.4177
C33.70941.56181.50552.40322.24382.22872.22871.09351.09354.26894.26894.0697
N42.48002.43271.50552.30781.27853.17713.17712.12812.12813.17943.17942.6214
O52.42881.48952.40322.30781.40422.10092.10093.15473.15472.69842.69843.3483
C61.48832.30272.24381.27851.40423.02763.02762.97472.97472.12662.12662.1156
H74.32471.09212.22873.17712.10093.02761.79492.40582.99774.43224.77735.0857
H84.32471.09212.22873.17712.10093.02761.79492.99772.40584.77734.43225.0857
H94.37052.22171.09352.12813.15472.97472.40582.99771.78204.77105.09084.6377
H104.37052.22171.09352.12813.15472.97472.99772.40581.78205.09084.77104.6377
H111.09574.04084.26893.17942.69842.12664.43224.77734.77105.09081.77021.7915
H121.09574.04084.26893.17942.69842.12664.77734.43225.09084.77101.77021.7915
H131.09054.41774.06972.62143.34832.11565.08575.08574.63774.63771.79151.7915

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 127.205 C1 C6 O5 114.184
C2 C3 N4 104.943 C2 C3 H9 112.389
C2 C3 H10 112.389 C2 O5 C6 105.419
C3 C2 O5 103.898 C3 C2 H7 113.037
C3 C2 H8 113.037 C3 N4 C6 107.129
N4 C3 H9 108.907 N4 C3 H10 108.907
N4 C6 O5 118.611 O5 C2 H7 107.947
O5 C2 H8 107.947 C6 C1 H11 109.836
C6 C1 H12 109.836 C6 C1 H13 109.278
H7 C2 H8 110.518 H9 C3 H10 109.139
H11 C1 H12 107.759 H11 C1 H13 110.058
H12 C1 H13 110.058
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.674      
2 C -0.228      
3 C -0.352      
4 N -0.487      
5 O -0.487      
6 C 0.523      
7 H 0.235      
8 H 0.235      
9 H 0.243      
10 H 0.243      
11 H 0.248      
12 H 0.248      
13 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.708 -1.112 0.000 1.319
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -41.080 2.204 0.000
y 2.204 -28.503 0.000
z 0.000 0.000 -35.112
Traceless
 xyz
x -9.273 2.204 0.000
y 2.204 9.593 0.000
z 0.000 0.000 -0.320
Polar
3z2-r2-0.641
x2-y2-12.577
xy2.204
xz0.000
yz0.000


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> 151.352
(<r2>)1/2 12.303