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 C4H5NO (3-Methylisoxazole)

using model chemistry: B3LYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/TZVP
 hartrees
Energy at 0K-285.455260
Energy at 298.15K-285.461701
HF Energy-285.455260
Nuclear repulsion energy223.370077
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/TZVP
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 3278 3165 0.12      
2 A 3258 3145 0.02      
3 A 3134 3026 6.21      
4 A 3095 2988 11.65      
5 A 3043 2938 15.01      
6 A 1614 1559 29.27      
7 A 1499 1448 11.17      
8 A 1487 1435 9.86      
9 A 1478 1427 5.77      
10 A 1439 1389 45.05      
11 A 1414 1365 3.93      
12 A 1297 1252 2.40      
13 A 1148 1108 21.41      
14 A 1085 1048 12.65      
15 A 1067 1030 1.29      
16 A 1037 1001 1.64      
17 A 979 946 1.66      
18 A 930 898 0.44      
19 A 882 851 29.18      
20 A 879 848 0.59      
21 A 782 755 49.87      
22 A 659 636 6.02      
23 A 656 633 0.26      
24 A 605 584 3.89      
25 A 341 329 7.03      
26 A 270 260 4.96      
27 A 122 117 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 18737.2 cm-1
Scaled (by 0.9654) Zero Point Vibrational Energy (zpe) 18088.9 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/TZVP
ABC
0.30693 0.11748 0.08632

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.085 0.016 -0.001
H2 2.462 0.207 1.005
H3 2.475 -0.944 -0.340
H4 2.453 0.799 -0.663
C5 -1.447 0.605 -0.001
O6 -1.365 -0.744 0.002
N7 -0.076 -1.090 -0.002
C8 0.621 0.006 0.000
C9 -0.202 1.092 0.002
H10 0.072 2.094 -0.005
H11 -2.352 1.116 -0.005

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09051.09051.09043.58003.53212.42701.46372.52732.89304.5712
H21.09051.77031.76984.05514.06853.02242.10642.98053.20775.0019
H31.09051.77031.77344.23033.86042.57762.11103.38093.88815.2594
H41.09041.76981.77343.96024.17143.22542.10422.75312.78904.8605
C53.58004.05514.23033.96021.35152.18002.15271.33592.12661.0399
O63.53214.06853.86044.17141.35151.33462.12252.17263.18082.1060
N72.42703.02242.57763.22542.18001.33461.29842.18523.18743.1701
C81.46372.10642.11102.10422.15272.12251.29841.36282.15933.1738
C92.52732.98053.38092.75311.33592.17262.18521.36281.03922.1500
H102.89303.20773.88812.78902.12663.18083.18742.15931.03922.6139
H114.57125.00195.25944.86051.03992.10603.17013.17382.15002.6139

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 122.860 C1 C8 C9 126.763
H2 C1 H3 108.519 H2 C1 H4 108.484
H2 C1 C8 110.267 H3 C1 H4 108.804
H3 C1 C8 110.627 H4 C1 C8 110.085
C5 O6 N7 108.499 C5 C9 C8 105.811
C5 C9 H10 126.656 O6 C5 C9 107.886
O6 C5 H11 122.907 O6 N7 C8 107.426
N7 C8 C9 110.377 C8 C9 H10 127.529
C9 C5 H11 129.206
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.424      
2 H 0.138      
3 H 0.154      
4 H 0.138      
5 C -0.060      
6 O -0.094      
7 N -0.029      
8 C -0.021      
9 C -0.082      
10 H 0.143      
11 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.618 3.080 0.000 3.141
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.978 -2.147 0.000
y -2.147 -37.095 -0.000
z 0.000 -0.000 -36.525
Traceless
 xyz
x 6.831 -2.147 0.000
y -2.147 -3.843 -0.000
z 0.000 -0.000 -2.988
Polar
3z2-r2-5.976
x2-y27.116
xy-2.147
xz0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.912 -0.091 0.000
y -0.091 8.066 0.000
z 0.000 0.000 5.304


<r2> (average value of r2) Å2
<r2> 137.061
(<r2>)1/2 11.707