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

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-285.256952
Energy at 298.15K-285.263422
Nuclear repulsion energy223.603864
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 B3PW91/6-31G**
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 3305 3167 0.44      
2 A 3282 3145 0.08      
3 A 3171 3039 5.11      
4 A 3133 3003 11.10      
5 A 3064 2937 14.49      
6 A 1639 1571 26.23      
7 A 1515 1452 4.64      
8 A 1498 1436 18.91      
9 A 1490 1428 8.24      
10 A 1460 1400 38.16      
11 A 1413 1354 0.79      
12 A 1305 1250 1.70      
13 A 1174 1126 15.83      
14 A 1094 1048 8.82      
15 A 1062 1018 3.62      
16 A 1040 996 2.43      
17 A 984 943 3.36      
18 A 964 924 11.28      
19 A 917 879 18.32      
20 A 874 837 0.39      
21 A 790 757 40.87      
22 A 667 639 4.79      
23 A 666 639 0.33      
24 A 617 591 4.31      
25 A 336 322 6.75      
26 A 274 263 5.01      
27 A 129 124 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18930.6 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 18143.1 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 B3PW91/6-31G**
ABC
0.30659 0.11788 0.08652

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.126 0.025 0.000
H2 2.519 0.537 0.884
H3 2.496 -1.003 -0.001
H4 2.519 0.538 -0.883
C5 -1.483 0.571 -0.000
O6 -1.372 -0.765 0.000
N7 -0.028 -1.106 -0.000
C8 0.634 0.030 -0.000
C9 -0.254 1.146 -0.000
H10 -0.009 2.197 -0.000
H11 -2.490 0.962 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09461.09151.09463.65053.58642.43321.49272.63193.04624.7111
H21.09461.77601.76704.09864.19723.15752.14322.97403.15075.1046
H31.09151.77601.77604.27833.87482.52582.12883.49004.06345.3591
H41.09461.76701.77604.09854.19763.15802.14322.97353.14975.1044
C53.65054.09864.27834.09851.34032.22002.18481.35672.19531.0808
O63.58644.19723.87484.19761.34031.38652.15742.21393.26092.0576
N72.43323.15752.52583.15802.22001.38651.31452.26373.30353.2157
C81.49272.14322.12882.14322.18482.15741.31451.42682.26093.2604
C92.63192.97403.49002.97351.35672.21392.26371.42681.07942.2435
H103.04623.15074.06343.14972.19533.26093.30352.26091.07942.7721
H114.71115.10465.35915.10441.08082.05763.21573.26042.24352.7721

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 120.041 C1 C8 C9 128.690
H2 C1 H3 108.662 H2 C1 H4 107.634
H2 C1 C8 110.923 H3 C1 H4 108.663
H3 C1 C8 109.956 H4 C1 C8 110.925
C5 O6 N7 108.995 C5 C9 C8 103.397
C5 C9 H10 128.263 O6 C5 C9 110.352
O6 C5 H11 115.983 O6 N7 C8 105.987
N7 C8 C9 111.269 C8 C9 H10 128.341
C9 C5 H11 133.665
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.445      
2 H 0.155      
3 H 0.168      
4 H 0.155      
5 C 0.181      
6 O -0.327      
7 N -0.214      
8 C 0.280      
9 C -0.249      
10 H 0.138      
11 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.519 2.922 0.000 2.968
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.928 -2.003 0.000
y -2.003 -35.728 -0.000
z 0.000 -0.000 -35.580
Traceless
 xyz
x 6.726 -2.003 0.000
y -2.003 -3.474 -0.000
z 0.000 -0.000 -3.252
Polar
3z2-r2-6.503
x2-y26.800
xy-2.003
xz0.000
yz-0.000


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> 136.170
(<r2>)1/2 11.669