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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-283.660325
Energy at 298.15K-283.666785
Nuclear repulsion energy220.635689
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 B1B95/3-21G
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 3338 3194 0.56      
2 A 3312 3169 0.18      
3 A 3178 3041 2.65      
4 A 3145 3009 7.07      
5 A 3081 2948 7.07      
6 A 1599 1530 19.03      
7 A 1548 1481 12.14      
8 A 1536 1470 13.30      
9 A 1462 1398 2.23      
10 A 1452 1389 24.14      
11 A 1411 1350 26.97      
12 A 1294 1238 1.21      
13 A 1147 1098 9.93      
14 A 1101 1053 7.88      
15 A 1056 1010 12.38      
16 A 1046 1001 3.13      
17 A 986 943 1.86      
18 A 937 896 0.07      
19 A 920 880 0.87      
20 A 850 814 15.33      
21 A 819 783 58.71      
22 A 670 641 0.08      
23 A 653 624 5.90      
24 A 583 558 6.08      
25 A 329 315 6.30      
26 A 272 261 5.94      
27 A 139 133 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18932.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 18112.3 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 B1B95/3-21G
ABC
0.29745 0.11572 0.08463

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.134 0.036 0.000
H2 -2.509 0.554 -0.887
H3 -2.513 -0.987 -0.000
H4 -2.509 0.554 0.887
C5 1.485 0.607 -0.000
O6 1.423 -0.767 0.000
N7 0.001 -1.143 -0.000
C8 -0.641 0.015 -0.000
C9 0.241 1.142 -0.000
H10 -0.037 2.179 -0.000
H11 2.470 1.038 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09361.09081.09363.66393.64692.43881.49292.62012.99854.7120
H21.09361.77811.77484.09144.24183.15662.13662.94873.08835.0804
H31.09081.77811.77814.30413.94262.51852.12283.48104.01925.3788
H41.09361.77481.77814.09144.24173.15662.13662.94873.08845.0804
C53.66394.09144.30414.09141.37532.29512.20741.35392.18791.0752
O63.64694.24183.94264.24171.37531.47172.20772.24503.28782.0863
N72.43883.15662.51853.15662.29511.47171.32392.29773.32253.2949
C81.49292.13662.12282.13662.20742.20771.32391.43162.24723.2755
C92.62012.94873.48102.94871.35392.24502.29771.43161.07382.2314
H102.99853.08834.01923.08842.18793.28783.32252.24721.07382.7545
H114.71205.08045.37885.08041.07522.08633.29493.27552.23142.7545

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 119.826 C1 C8 C9 127.242
H2 C1 H3 108.972 H2 C1 H4 108.472
H2 C1 C8 110.440 H3 C1 H4 108.972
H3 C1 C8 109.510 H4 C1 C8 110.440
C5 O6 N7 107.392 C5 C9 C8 104.801
C5 C9 H10 128.270 O6 C5 C9 110.690
O6 C5 H11 116.190 O6 N7 C8 104.185
N7 C8 C9 112.933 C8 C9 H10 126.929
C9 C5 H11 133.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.644      
2 H 0.238      
3 H 0.250      
4 H 0.238      
5 C 0.141      
6 O -0.366      
7 N -0.244      
8 C 0.250      
9 C -0.345      
10 H 0.221      
11 H 0.261      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.873 3.199 0.000 3.316
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.140 2.607 0.000
y 2.607 -36.156 0.000
z 0.000 0.000 -36.365
Traceless
 xyz
x 7.121 2.607 0.000
y 2.607 -3.403 0.000
z 0.000 0.000 -3.717
Polar
3z2-r2-7.435
x2-y27.016
xy2.607
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.665 0.142 0.000
y 0.142 6.640 0.000
z 0.000 0.000 3.169


<r2> (average value of r2) Å2
<r2> 138.637
(<r2>)1/2 11.774