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: B1B95/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 B1B95/cc-pVDZ
 hartrees
Energy at 0K-286.497265
Energy at 298.15K-286.506149
Nuclear repulsion energy241.747183
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 B1B95/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 3207 3082 2.93      
2 A 3076 2956 10.80      
3 A 3070 2951 49.70      
4 A 3054 2936 44.23      
5 A 1782 1713 146.40      
6 A 1500 1442 5.65      
7 A 1470 1413 0.11      
8 A 1445 1389 9.11      
9 A 1411 1357 78.12      
10 A 1365 1312 4.06      
11 A 1325 1273 12.35      
12 A 1256 1208 76.22      
13 A 1092 1050 6.19      
14 A 1054 1014 91.76      
15 A 1000 961 0.96      
16 A 960 922 15.42      
17 A 925 889 21.66      
18 A 761 731 5.54      
19 A 672 646 2.73      
20 A 344 330 5.24      
21 A 3151 3029 5.68      
22 A 3122 3001 41.69      
23 A 3089 2969 6.16      
24 A 1440 1384 8.99      
25 A 1235 1187 0.03      
26 A 1207 1160 1.91      
27 A 1106 1063 0.00      
28 A 1044 1003 3.73      
29 A 822 790 0.08      
30 A 595 572 3.85      
31 A 237 227 9.65      
32 A 144 138 1.19      
33 A 48 46 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 24002.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 23071.2 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 B1B95/cc-pVDZ
ABC
0.25970 0.11541 0.08368

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.332 2.119 0.000
C2 0.544 -1.491 0.000
C3 -0.981 -1.281 0.000
N4 -1.166 0.167 0.000
O5 1.076 -0.159 0.000
C6 0.000 0.673 0.000
H7 0.918 -2.012 0.892
H8 0.918 -2.012 -0.892
H9 -1.468 -1.720 0.884
H10 -1.468 -1.720 -0.884
H11 0.934 2.368 0.885
H12 0.934 2.368 -0.885
H13 -0.589 2.708 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 C6 H7 H8 H9 H10 H11 H12 H13
C13.61663.64492.46022.39651.48324.26704.26704.33134.33131.09861.09861.0933
C23.61661.53952.38211.43482.23211.09891.09892.20982.20983.97823.97824.3497
C33.64491.53951.46022.34362.18702.22192.22191.10041.10044.21484.21484.0086
N42.46022.38211.46022.26581.27103.14463.14462.10582.10583.16763.16762.6055
O52.39651.43482.34362.26581.36072.06312.06313.11353.11352.68072.68073.3158
C61.48322.23212.18701.27101.36072.97522.97522.94382.94382.12732.12732.1183
H74.26701.09892.22193.14462.06312.97521.78482.40432.98914.37994.72665.0349
H84.26701.09892.22193.14462.06312.97521.78482.98912.40434.72664.37995.0349
H94.33132.20981.10042.10583.11352.94382.40432.98911.76724.74145.06044.6003
H104.33132.20981.10042.10583.11352.94382.98912.40431.76725.06044.74144.6003
H111.09863.97824.21483.16762.68072.12734.37994.72664.74145.06041.76911.7941
H121.09863.97824.21483.16762.68072.12734.72664.37995.06044.74141.76911.7941
H131.09334.34974.00862.60553.31582.11835.03495.03494.60034.60031.79411.7941

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 126.398 C1 C6 O5 114.785
C2 C3 N4 105.114 C2 C3 H9 112.607
C2 C3 H10 112.607 C2 O5 C6 105.936
C3 C2 O5 103.935 C3 C2 H7 113.688
C3 C2 H8 113.688 C3 N4 C6 106.198
N4 C3 H9 109.846 N4 C3 H10 109.846
N4 C6 O5 118.817 O5 C2 H7 108.299
O5 C2 H8 108.299 C6 C1 H11 110.072
C6 C1 H12 110.072 C6 C1 H13 109.676
H7 C2 H8 108.603 H9 C3 H10 106.831
H11 C1 H12 107.251 H11 C1 H13 109.869
H12 C1 H13 109.869
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.033      
2 C 0.103      
3 C 0.027      
4 N -0.278      
5 O -0.290      
6 C 0.080      
7 H 0.039      
8 H 0.039      
9 H 0.037      
10 H 0.037      
11 H 0.058      
12 H 0.058      
13 H 0.056      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.944 -0.777 0.000 1.223
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -40.298 1.702 0.000
y 1.702 -29.788 0.000
z 0.000 0.000 -34.873
Traceless
 xyz
x -7.967 1.702 0.000
y 1.702 7.797 0.000
z 0.000 0.000 0.171
Polar
3z2-r20.341
x2-y2-10.510
xy1.702
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.465 0.712 0.000
y 0.712 9.212 0.000
z 0.000 0.000 5.725


<r2> (average value of r2) Å2
<r2> 147.470
(<r2>)1/2 12.144