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 CH3CH(CH3)CN (Propanenitrile, 2-methyl-)

using model chemistry: PBEPBEultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine/6-311G*
 hartrees
Energy at 0K-211.142988
Energy at 298.15K-211.150131
HF Energy-211.142988
Nuclear repulsion energy158.338504
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 PBEPBEultrafine/6-311G*
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' 3064 3032 24.73      
2 A' 3058 3026 41.25      
3 A' 2982 2951 19.36      
4 A' 2961 2930 5.29      
5 A' 2267 2244 7.49      
6 A' 1481 1466 14.12      
7 A' 1470 1455 10.46      
8 A' 1384 1370 4.33      
9 A' 1314 1300 4.48      
10 A' 1162 1150 3.66      
11 A' 1097 1086 4.62      
12 A' 914 905 1.43      
13 A' 760 752 0.38      
14 A' 541 535 1.14      
15 A' 344 341 0.13      
16 A' 279 276 0.69      
17 A' 215 213 1.61      
18 A" 3063 3031 15.86      
19 A" 3054 3022 0.26      
20 A" 2980 2949 18.71      
21 A" 1458 1443 2.69      
22 A" 1455 1440 2.73      
23 A" 1363 1349 6.70      
24 A" 1280 1267 0.47      
25 A" 1102 1090 2.81      
26 A" 950 940 0.11      
27 A" 914 905 2.38      
28 A" 562 556 0.10      
29 A" 222 220 0.01      
30 A" 183 181 3.88      

Unscaled Zero Point Vibrational Energy (zpe) 21939.7 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 21711.6 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 PBEPBEultrafine/6-311G*
ABC
0.26266 0.13117 0.09584

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.408 -2.187 0.000
C2 0.026 -1.085 0.000
C3 -0.437 0.307 0.000
C4 0.026 1.032 1.279
C5 0.026 1.032 -1.279
H6 -1.543 0.270 0.000
H7 -0.371 2.058 1.290
H8 -0.326 0.516 2.184
H9 1.124 1.086 1.322
H10 -0.371 2.058 -1.290
H11 -0.326 0.516 -2.184
H12 1.124 1.086 -1.322

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.16612.63303.48413.48413.13664.50423.55163.60164.50423.55163.6016
C21.16611.46702.47302.47302.07243.42052.73082.76893.42052.73082.7689
C32.63301.46701.54131.54131.10582.17602.19692.18892.17602.19692.1889
C43.48412.47301.54132.55872.16231.10051.09921.10022.79523.51932.8243
C53.48412.47301.54132.55872.16232.79523.51932.82431.10051.09921.1002
H63.13662.07241.10582.16232.16232.49712.51203.08592.49712.51203.0859
H74.50423.42052.17601.10052.79522.49711.78311.78282.58023.80143.1625
H83.55162.73082.19691.09923.51932.51201.78311.78063.80144.36843.8369
H93.60162.76892.18891.10022.82433.08591.78281.78063.16253.83692.6443
H104.50423.42052.17602.79521.10052.49712.58023.80143.16251.78311.7828
H113.55162.73082.19693.51931.09922.51203.80144.36843.83691.78311.7806
H123.60162.76892.18892.82431.10023.08593.16253.83692.64431.78281.7806

picture of Propanenitrile, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 179.276 C2 C3 C4 110.555
C2 C3 C5 110.555 C2 C3 H6 106.472
C3 C4 H7 109.777 C3 C4 H8 111.514
C3 C4 H9 110.816 C3 C5 H10 109.777
C3 C5 H11 111.514 C3 C5 H12 110.816
C4 C3 C5 112.207 C4 C3 H6 108.419
C5 C3 H6 108.419 H7 C4 H8 108.308
H7 C4 H9 108.212 H8 C4 H9 108.113
H10 C5 H11 108.308 H10 C5 H12 108.212
H11 C5 H12 108.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.238      
2 C 0.150      
3 C -0.321      
4 C -0.622      
5 C -0.622      
6 H 0.255      
7 H 0.227      
8 H 0.239      
9 H 0.233      
10 H 0.227      
11 H 0.239      
12 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.132 3.744 0.000 3.912
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.795 1.656 0.000
y 1.656 -39.240 0.000
z 0.000 0.000 -30.339
Traceless
 xyz
x 3.995 1.656 0.000
y 1.656 -8.673 0.000
z 0.000 0.000 4.678
Polar
3z2-r29.356
x2-y28.445
xy1.656
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.081 -0.642 0.000
y -0.642 8.778 0.000
z 0.000 0.000 6.865


<r2> (average value of r2) Å2
<r2> 129.920
(<r2>)1/2 11.398