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: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-286.423512
Energy at 298.15K-286.432284
HF Energy-286.423512
Nuclear repulsion energy 
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 B97D3/6-31G*
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' 3128 3067 8.35      
2 A' 3015 2956 60.39      
3 A' 3009 2950 13.86      
4 A' 2995 2936 56.07      
5 A' 1704 1671 121.84      
6 A' 1523 1493 0.61      
7 A' 1499 1469 0.57      
8 A' 1479 1450 10.45      
9 A' 1408 1380 24.72      
10 A' 1359 1333 17.57      
11 A' 1320 1294 16.85      
12 A' 1227 1203 95.89      
13 A' 1064 1043 0.80      
14 A' 975 956 91.89      
15 A' 954 936 5.91      
16 A' 928 910 22.93      
17 A' 886 868 18.17      
18 A' 742 728 5.06      
19 A' 654 641 1.87      
20 A' 342 335 5.55      
21 A" 3069 3008 13.75      
22 A" 3064 3004 56.40      
23 A" 3026 2966 11.54      
24 A" 1477 1448 8.19      
25 A" 1233 1209 0.09      
26 A" 1198 1174 1.07      
27 A" 1107 1085 0.02      
28 A" 1052 1031 3.34      
29 A" 821 805 0.20      
30 A" 576 565 4.83      
31 A" 228 223 9.92      
32 A" 126 124 0.96      
33 A" 73 72 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23628.0 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 23164.8 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 B97D3/6-31G*
ABC
0.25455 0.11331 0.08206

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.338 2.137 0.000
C2 0.546 -1.512 0.000
C3 -0.995 -1.292 0.000
N4 -1.177 0.172 0.000
O5 1.091 -0.161 0.000
C6 0.000 0.680 0.000
H7 0.920 -2.028 0.895
H8 0.920 -2.028 -0.895
H9 -1.480 -1.726 0.887
H10 -1.480 -1.726 -0.887
H11 0.938 2.390 0.886
H12 0.938 2.390 -0.886
H13 -0.585 2.726 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.65493.67872.48072.41851.49564.29964.29964.36124.36121.09961.09961.0945
C23.65491.55652.40931.45652.25901.09861.09862.22272.22274.02024.02024.3865
C33.67871.55651.47542.37242.20862.23802.23801.10071.10074.25144.25144.0391
N42.48072.40931.47542.29201.28153.16823.16822.11762.11763.18973.18972.6218
O52.41851.45652.37242.29201.37772.07732.07733.13843.13842.70482.70483.3383
C61.49562.25902.20861.28151.37772.99672.99672.96142.96142.14202.14202.1281
H74.29961.09862.23803.16822.07732.99671.79012.41943.00484.41774.76325.0662
H84.29961.09862.23803.16822.07732.99671.79013.00482.41944.76324.41775.0662
H94.36122.22271.10072.11763.13842.96142.41943.00481.77384.77425.09284.6278
H104.36122.22271.10072.11763.13842.96143.00482.41941.77385.09284.77424.6278
H111.09964.02024.25143.18972.70482.14204.41774.76324.77425.09281.77221.7934
H121.09964.02024.25143.18972.70482.14204.76324.41775.09284.77421.77221.7934
H131.09454.38654.03912.62183.33832.12815.06625.06624.62784.62781.79341.7934

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 126.581 C1 C6 O5 114.728
C2 C3 N4 105.129 C2 C3 H9 112.434
C2 C3 H10 112.434 C2 O5 C6 105.956
C3 C2 O5 103.772 C3 C2 H7 113.744
C3 C2 H8 113.744 C3 N4 C6 106.452
N4 C3 H9 109.756 N4 C3 H10 109.756
N4 C6 O5 118.691 O5 C2 H7 108.077
O5 C2 H8 108.077 C6 C1 H11 110.305
C6 C1 H12 110.305 C6 C1 H13 109.604
H7 C2 H8 109.025 H9 C3 H10 107.320
H11 C1 H12 107.372 H11 C1 H13 109.611
H12 C1 H13 109.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.528      
2 C -0.073      
3 C -0.195      
4 N -0.433      
5 O -0.460      
6 C 0.500      
7 H 0.159      
8 H 0.159      
9 H 0.161      
10 H 0.161      
11 H 0.180      
12 H 0.180      
13 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.948 -0.877 0.000 1.292
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.368 1.726 0.000
y 1.726 -29.414 0.000
z 0.000 0.000 -34.844
Traceless
 xyz
x -8.239 1.726 0.000
y 1.726 8.192 0.000
z 0.000 0.000 0.046
Polar
3z2-r20.093
x2-y2-10.954
xy1.726
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.505 0.671 0.000
y 0.671 9.181 0.000
z 0.000 0.000 5.613


<r2> (average value of r2) Å2
<r2> 149.693
(<r2>)1/2 12.235