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All results from a given calculation for C4H5NO (3-Methylisoxazole)

using model chemistry: PBEPBE/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 PBEPBE/3-21G
 hartrees
Energy at 0K-283.447376
Energy at 298.15K-283.453654
Nuclear repulsion energy218.062273
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 PBEPBE/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 3241 3211 0.29      
2 A 3212 3183 0.17      
3 A 3086 3058 3.25      
4 A 3054 3026 7.75      
5 A 2992 2965 8.35      
6 A 1531 1517 14.33      
7 A 1506 1492 11.36      
8 A 1488 1474 14.32      
9 A 1413 1400 4.49      
10 A 1393 1380 30.37      
11 A 1345 1333 11.51      
12 A 1250 1238 1.42      
13 A 1103 1093 8.25      
14 A 1063 1053 7.27      
15 A 1014 1005 7.92      
16 A 998 989 6.46      
17 A 954 945 0.97      
18 A 886 878 1.35      
19 A 867 859 0.36      
20 A 790 782 9.37      
21 A 770 763 57.08      
22 A 641 635 0.20      
23 A 629 623 5.46      
24 A 564 559 4.67      
25 A 318 315 5.78      
26 A 259 257 6.06      
27 A 137 136 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18251.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 18085.3 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 PBEPBE/3-21G
ABC
0.29039 0.11326 0.08277

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.153 0.034 0.000
H2 -2.533 0.555 -0.896
H3 -2.533 -1.000 -0.000
H4 -2.533 0.555 0.896
C5 1.496 0.619 0.000
O6 1.450 -0.772 0.000
N7 -0.001 -1.161 -0.000
C8 -0.650 0.016 0.000
C9 0.235 1.153 -0.000
H10 -0.048 2.199 -0.000
H11 2.486 1.064 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.10431.10151.10433.69583.69242.46111.50322.63783.02004.7527
H21.10431.79531.79194.12824.29353.18732.15412.97083.11145.1244
H31.10151.79531.79534.34213.98972.53662.13993.50704.05105.4273
H41.10431.79191.79534.12824.29353.18732.15412.97083.11145.1244
C53.69584.12824.34214.12821.39212.32602.22901.36882.20921.0859
O63.69244.29353.98974.29351.39211.50272.24352.27623.32772.1085
N72.46113.18732.53663.18732.32601.50271.34422.32563.36023.3376
C81.50322.15412.13992.15412.22902.24351.34421.44052.26413.3068
C92.63782.97083.50702.97081.36882.27622.32561.44051.08412.2527
H103.02003.11144.05103.11142.20923.32773.36022.26411.08412.7771
H114.75275.12445.42735.12441.08592.10853.33763.30682.25272.7771

picture of 3-Methylisoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C8 N7 119.506 C1 C8 C9 127.278
H2 C1 H3 108.955 H2 C1 H4 108.447
H2 C1 C8 110.466 H3 C1 H4 108.955
H3 C1 C8 109.516 H4 C1 C8 110.466
C5 O6 N7 106.869 C5 C9 C8 104.987
C5 C9 H10 128.107 O6 C5 C9 111.062
O6 C5 H11 116.075 O6 N7 C8 103.865
N7 C8 C9 113.216 C8 C9 H10 126.906
C9 C5 H11 132.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.650      
2 H 0.234      
3 H 0.243      
4 H 0.234      
5 C 0.112      
6 O -0.312      
7 N -0.246      
8 C 0.254      
9 C -0.319      
10 H 0.203      
11 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.840 3.006 0.000 3.121
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.197 2.396 0.000
y 2.396 -36.074 0.000
z 0.000 0.000 -36.511
Traceless
 xyz
x 7.095 2.396 0.000
y 2.396 -3.220 0.000
z 0.000 0.000 -3.875
Polar
3z2-r2-7.750
x2-y26.877
xy2.396
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.104 0.222 0.000
y 0.222 6.903 0.000
z 0.000 0.000 3.237


<r2> (average value of r2) Å2
<r2> 141.238
(<r2>)1/2 11.884