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All results from a given calculation for C4H5NO (Isoxazole, 5-methyl-)

using model chemistry: B1B95/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-285.281002
Energy at 298.15K-285.287459
Nuclear repulsion energy 
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/aug-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 3310 3171 0.29      
2 A 3268 3131 2.42      
3 A 3183 3049 6.26      
4 A 3145 3013 5.48      
5 A 3073 2943 12.35      
6 A 1671 1601 42.43      
7 A 1553 1487 48.46      
8 A 1466 1405 6.91      
9 A 1450 1389 7.92      
10 A 1393 1334 1.44      
11 A 1385 1327 8.45      
12 A 1285 1231 22.16      
13 A 1211 1160 9.69      
14 A 1057 1013 2.68      
15 A 1048 1004 2.10      
16 A 1029 986 13.47      
17 A 1015 972 3.35      
18 A 953 912 6.51      
19 A 923 884 15.82      
20 A 905 867 6.77      
21 A 793 760 40.30      
22 A 669 640 0.35      
23 A 649 621 2.28      
24 A 647 620 0.32      
25 A 333 319 2.24      
26 A 254 243 2.36      
27 A 112 108 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 18890.1 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 18094.8 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/aug-cc-pVDZ
ABC
0.31106 0.11986 0.08795

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.096 0.015 -0.000
H2 2.450 -0.525 -0.885
H3 2.532 1.016 -0.000
H4 2.450 -0.524 0.886
C5 0.619 0.111 -0.000
O6 -0.065 -1.044 0.000
N7 -1.420 -0.789 0.000
C8 -1.525 0.513 -0.000
H9 -2.515 0.958 -0.000
C10 -0.260 1.151 0.000
H11 -0.037 2.209 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 H9 C10 H11
C11.09571.09221.09571.48052.40653.60673.65564.70642.61543.0600
H21.09571.77881.77132.13132.71653.97894.20325.25683.30693.8003
H31.09221.77881.77882.11723.31534.34504.08885.04762.79552.8329
H41.09571.77131.77882.13132.71693.97924.20325.25683.30663.7998
C51.48052.13132.11722.13131.34202.22822.18153.24601.36142.1980
O62.40652.71653.31532.71691.34201.37902.13533.16422.20363.2529
N73.60673.97894.34503.97922.22821.37901.30642.06172.25993.3008
C83.65564.20324.08884.20322.18152.13531.30641.08481.41692.2556
H94.70645.25685.04765.25683.24603.16422.06171.08482.26322.7751
C102.61543.30692.79553.30661.36142.20362.25991.41692.26321.0810
H113.06003.80032.83293.79982.19803.25293.30082.25562.77511.0810

picture of Isoxazole, 5-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 O6 116.907 C1 C5 C10 133.898
H2 C1 H3 108.783 H2 C1 H4 107.864
H2 C1 C5 110.756 H3 C1 H4 108.782
H3 C1 C5 109.837 H4 C1 C5 110.757
C5 O6 N7 109.939 C5 C10 C8 103.460
C5 C10 H11 127.932 O6 C5 C10 109.195
O6 N7 C8 105.306 N7 C8 H9 118.838
N7 C8 C10 112.099 C8 C10 H11 128.607
H9 C8 C10 129.064
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.707      
2 H -0.069      
3 H -0.151      
4 H -0.069      
5 C 0.013      
6 O -0.604      
7 N -0.301      
8 C 0.474      
9 H -0.370      
10 C 0.924      
11 H -0.556      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.988 2.616 0.000 3.286
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.519 -3.724 0.000
y -3.724 -35.662 0.000
z 0.000 0.000 -36.248
Traceless
 xyz
x 4.436 -3.724 0.000
y -3.724 -1.779 0.000
z 0.000 0.000 -2.658
Polar
3z2-r2-5.315
x2-y24.144
xy-3.724
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.752 -0.254 0.000
y -0.254 8.479 0.000
z 0.000 0.000 5.886


<r2> (average value of r2) Å2
<r2> 135.077
(<r2>)1/2 11.622