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 C5H9N (Butanenitrile, 2-methyl-)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-250.650273
Energy at 298.15K-250.659737
Nuclear repulsion energy220.467613
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 mPW1PW91/6-31G(2df,p)
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 3170 3026 13.45      
2 A 3162 3019 13.79      
3 A 3153 3010 26.32      
4 A 3144 3002 27.63      
5 A 3114 2973 4.16      
6 A 3077 2937 11.12      
7 A 3072 2933 22.06      
8 A 3064 2925 14.40      
9 A 3054 2916 2.34      
10 A 2384 2276 11.94      
11 A 1512 1443 2.98      
12 A 1505 1437 8.34      
13 A 1501 1433 6.02      
14 A 1494 1427 9.09      
15 A 1485 1418 0.25      
16 A 1415 1351 2.44      
17 A 1411 1347 5.14      
18 A 1382 1319 0.26      
19 A 1348 1287 1.40      
20 A 1318 1258 2.94      
21 A 1284 1226 1.36      
22 A 1190 1136 2.31      
23 A 1150 1098 0.18      
24 A 1119 1068 4.99      
25 A 1063 1015 1.39      
26 A 1003 958 1.72      
27 A 975 930 4.71      
28 A 910 869 0.39      
29 A 816 779 0.39      
30 A 770 735 3.67      
31 A 577 551 0.17      
32 A 547 522 1.26      
33 A 396 378 0.26      
34 A 329 314 0.89      
35 A 279 266 0.12      
36 A 220 210 0.16      
37 A 208 198 2.43      
38 A 165 158 5.76      
39 A 84 81 1.57      

Unscaled Zero Point Vibrational Energy (zpe) 28923.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 27613.5 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 mPW1PW91/6-31G(2df,p)
ABC
0.21674 0.07403 0.05912

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.516 -0.298 0.114
N2 -2.582 -0.694 -0.086
C3 -0.041 1.645 -0.148
H4 -0.155 1.686 -1.234
H5 -0.808 2.279 0.299
H6 0.936 2.055 0.113
C7 2.306 -0.421 0.080
H8 2.455 -0.393 1.163
H9 2.984 -1.174 -0.328
H10 2.612 0.547 -0.325
C11 0.864 -0.761 -0.272
H12 0.728 -0.759 -1.359
H13 0.634 -1.776 0.065
C14 -0.162 0.201 0.354
H15 -0.017 0.196 1.442

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6 C7 H8 H9 H10 C11 H12 H13 C14 H15
C11.15412.45382.75802.67933.39883.82434.10824.60604.23692.45532.72382.60951.46302.0629
N21.15413.45413.58743.48364.46904.89805.19755.59155.34533.45113.54653.39602.61703.1153
C32.45383.45411.09261.09121.09103.13413.47854.13792.87632.57292.79863.49281.53302.1511
H42.75803.58741.09261.76841.77253.49564.10884.34183.12752.81942.60213.78042.17393.0658
H52.67933.48361.09121.76841.76744.12674.30495.16623.88383.51593.78614.31002.17622.5040
H63.39884.46901.09101.77251.76742.83003.06723.84922.29742.84353.18283.84352.16832.4759
C73.82434.89803.13413.49564.12672.83001.09431.09231.09251.52302.16212.15232.56022.7626
H84.10825.19753.47854.10884.30493.06721.09431.76431.76782.17423.07862.53632.80302.5561
H94.60605.59154.13794.34185.16623.84921.09231.76431.76012.16072.51512.45763.50083.7437
H104.23695.34532.87633.12753.88382.29741.09251.76781.76012.18392.51483.07572.87733.1871
C112.45533.45112.57292.81943.51592.84351.52302.17422.16072.18391.09501.09391.54012.1521
H122.72383.54652.79862.60213.78613.18282.16213.07862.51512.51481.09501.75202.15643.0517
H132.60953.39603.49283.78044.31003.84352.15232.53632.45763.07571.09391.75202.15132.4922
C141.46302.61701.53302.17392.17622.16832.56022.80303.50082.87731.54012.15642.15131.0974
H152.06293.11532.15113.06582.50402.47592.76262.55613.74373.18712.15213.05172.49221.0974

picture of Butanenitrile, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C14 C3 109.951 C1 C14 C11 109.663
C1 C14 H15 106.476 N2 C1 C14 179.431
C3 C14 C11 113.695 C3 C14 H15 108.592
H4 C3 H5 108.149 H4 C3 H6 108.528
H4 C3 C14 110.665 H5 C3 H6 108.173
H5 C3 C14 110.930 H6 C3 C14 110.309
C7 C11 H12 110.279 C7 C11 H13 109.581
C7 C11 C14 113.399 H8 C7 H9 107.592
H8 C7 H10 107.885 H8 C7 C11 111.291
H9 C7 H10 107.347 H9 C7 C11 110.337
H10 C7 C11 112.188 C11 C14 H15 108.191
H12 C11 H13 106.341 H12 C11 C14 108.653
H13 C11 C14 108.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.298      
2 N -0.348      
3 C -0.459      
4 H 0.163      
5 H 0.168      
6 H 0.155      
7 C -0.469      
8 H 0.147      
9 H 0.155      
10 H 0.151      
11 C -0.235      
12 H 0.148      
13 H 0.153      
14 C -0.190      
15 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.859 1.304 0.491 4.103
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -47.794 -3.829 -0.870
y -3.829 -36.716 -0.115
z -0.870 -0.115 -36.052
Traceless
 xyz
x -11.410 -3.829 -0.870
y -3.829 5.207 -0.115
z -0.870 -0.115 6.204
Polar
3z2-r212.407
x2-y2-11.078
xy-3.829
xz-0.870
yz-0.115


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.355 0.444 0.224
y 0.444 7.985 0.097
z 0.224 0.097 6.960


<r2> (average value of r2) Å2
<r2> 197.727
(<r2>)1/2 14.062