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

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-283.704282
Energy at 298.15K-283.710762
Nuclear repulsion energy220.603077
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 mPW1PW91/3-21G
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 3347 3195 0.59      
2 A 3320 3169 0.20      
3 A 3182 3038 2.29      
4 A 3149 3006 6.47      
5 A 3085 2945 7.15      
6 A 1605 1532 19.47      
7 A 1554 1483 12.62      
8 A 1542 1472 14.15      
9 A 1469 1402 5.44      
10 A 1459 1392 21.22      
11 A 1418 1354 29.06      
12 A 1302 1242 1.33      
13 A 1153 1100 10.09      
14 A 1108 1058 8.70      
15 A 1064 1015 12.69      
16 A 1054 1006 2.49      
17 A 993 948 2.16      
18 A 944 902 0.21      
19 A 930 888 0.84      
20 A 859 820 16.01      
21 A 823 786 60.41      
22 A 676 646 0.11      
23 A 659 629 5.81      
24 A 589 563 6.48      
25 A 332 317 6.53      
26 A 274 262 6.19      
27 A 133 127 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 19010.4 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 18147.3 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 mPW1PW91/3-21G
ABC
0.29758 0.11559 0.08458

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.136 0.035 -0.000
H2 2.510 0.554 0.888
H3 2.516 -0.988 -0.000
H4 2.510 0.554 -0.888
C5 -1.486 0.607 0.000
O6 -1.424 -0.766 -0.000
N7 -0.004 -1.142 0.000
C8 0.643 0.014 -0.000
C9 -0.241 1.142 0.000
H10 0.038 2.180 0.000
H11 -2.470 1.041 -0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 O6 N7 C8 C9 H10 H11
C11.09461.09171.09463.66623.64812.44171.49312.62153.00014.7140
H21.09461.77941.77634.09384.24313.15982.13742.95003.08965.0820
H31.09171.77941.77944.30813.94592.52442.12453.48414.02235.3831
H41.09461.77631.77944.09384.24313.15982.13742.95003.08965.0820
C53.66624.09384.30814.09381.37412.29272.20951.35542.19001.0756
O63.64814.24313.94594.24311.37411.46902.20822.24513.28832.0880
N72.44173.15982.52443.15982.29271.46901.32432.29703.32253.2939
C81.49312.13742.12452.13742.20952.20821.32431.43332.24913.2776
C92.62152.95003.48412.95001.35542.24512.29701.43331.07432.2315
H103.00013.08964.02233.08962.19003.28833.32252.24911.07432.7541
H114.71405.08205.38315.08201.07562.08803.29393.27762.23152.7541

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 120.030 C1 C8 C9 127.219
H2 C1 H3 108.952 H2 C1 H4 108.466
H2 C1 C8 110.428 H3 C1 H4 108.952
H3 C1 C8 109.579 H4 C1 C8 110.428
C5 O6 N7 107.448 C5 C9 C8 104.771
C5 C9 H10 128.298 O6 C5 C9 110.674
O6 C5 H11 116.408 O6 N7 C8 104.355
N7 C8 C9 112.751 C8 C9 H10 126.930
C9 C5 H11 132.917
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.673      
2 H 0.246      
3 H 0.258      
4 H 0.246      
5 C 0.145      
6 O -0.373      
7 N -0.253      
8 C 0.272      
9 C -0.371      
10 H 0.232      
11 H 0.271      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.880 3.243 0.000 3.360
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.080 -2.646 0.000
y -2.646 -36.228 0.000
z 0.000 0.000 -36.455
Traceless
 xyz
x 7.261 -2.646 0.000
y -2.646 -3.460 0.000
z 0.000 0.000 -3.801
Polar
3z2-r2-7.602
x2-y27.147
xy-2.646
xz0.000
yz0.000


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> 138.743
(<r2>)1/2 11.779