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: B3PW91/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVDZ
 hartrees
Energy at 0K-211.311562
Energy at 298.15K-211.318807
HF Energy-211.311562
Nuclear repulsion energy158.660199
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 B3PW91/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3151 3041 15.78      
2 A' 3145 3035 27.07      
3 A' 3055 2948 15.96      
4 A' 3048 2941 4.64      
5 A' 2362 2279 9.62      
6 A' 1482 1430 8.96      
7 A' 1469 1418 9.37      
8 A' 1400 1351 2.19      
9 A' 1334 1288 7.51      
10 A' 1185 1144 3.55      
11 A' 1115 1076 4.75      
12 A' 939 906 0.96      
13 A' 781 754 0.62      
14 A' 551 532 1.19      
15 A' 350 338 0.13      
16 A' 286 276 0.74      
17 A' 221 213 1.64      
18 A" 3150 3040 9.86      
19 A" 3142 3032 0.37      
20 A" 3053 2946 16.64      
21 A" 1458 1407 3.16      
22 A" 1455 1405 0.82      
23 A" 1379 1331 2.99      
24 A" 1311 1265 0.72      
25 A" 1137 1097 2.77      
26 A" 970 936 0.39      
27 A" 930 897 2.32      
28 A" 572 552 0.08      
29 A" 227 219 0.02      
30 A" 188 181 3.86      

Unscaled Zero Point Vibrational Energy (zpe) 22422.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 21637.6 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 B3PW91/cc-pVDZ
ABC
0.26408 0.13167 0.09623

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.401 -2.183 0.000
C2 0.027 -1.083 0.000
C3 -0.434 0.312 0.000
C4 0.027 1.029 1.276
C5 0.027 1.029 -1.276
H6 -1.538 0.267 0.000
H7 -0.370 2.056 1.289
H8 -0.327 0.509 2.178
H9 1.125 1.083 1.319
H10 -0.370 2.056 -1.289
H11 -0.327 0.509 -2.178
H12 1.125 1.083 -1.319

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.16222.63153.47683.47683.12504.49733.53873.59604.49733.53873.5960
C21.16221.46942.46762.46762.06703.41622.72092.76333.41622.72092.7633
C32.63151.46941.53451.53451.10472.16932.18952.18282.16932.18952.1828
C43.47682.46761.53452.55202.15801.10061.09951.10072.79133.51072.8182
C53.47682.46761.53452.55202.15802.79133.51072.81821.10061.09951.1007
H63.12502.06701.10472.15802.15802.49482.50373.08172.49482.50373.0817
H74.49733.41622.16931.10062.79132.49481.78421.78412.57853.79673.1597
H83.53872.72092.18951.09953.51072.50371.78421.78223.79674.35593.8294
H93.59602.76332.18281.10072.81823.08171.78411.78223.15973.82942.6374
H104.49733.41622.16932.79131.10062.49482.57853.79673.15971.78421.7841
H113.53872.72092.18953.51071.09952.50373.79674.35593.82941.78421.7822
H123.59602.76332.18282.81821.10073.08173.15973.82942.63741.78411.7822

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 179.516 C2 C3 C4 110.448
C2 C3 C5 110.448 C2 C3 H6 105.970
C3 C4 H7 109.725 C3 C4 H8 111.379
C3 C4 H9 110.784 C3 C5 H10 109.725
C3 C5 H11 111.379 C3 C5 H12 110.784
C4 C3 C5 112.514 C4 C3 H6 108.606
C5 C3 H6 108.606 H7 C4 H8 108.375
H7 C4 H9 108.291 H8 C4 H9 108.195
H10 C5 H11 108.375 H10 C5 H12 108.291
H11 C5 H12 108.195
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.144      
2 C -0.015      
3 C -0.188      
4 C -0.035      
5 C -0.035      
6 H 0.074      
7 H 0.050      
8 H 0.062      
9 H 0.060      
10 H 0.050      
11 H 0.062      
12 H 0.060      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.097 3.740 0.000 3.897
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.262 1.601 0.000
y 1.601 -38.479 0.000
z 0.000 0.000 -29.728
Traceless
 xyz
x 3.841 1.601 0.000
y 1.601 -8.483 0.000
z 0.000 0.000 4.642
Polar
3z2-r29.285
x2-y28.216
xy1.601
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.803 -0.580 0.000
y -0.580 8.305 0.000
z 0.000 0.000 6.543


<r2> (average value of r2) Å2
<r2> 129.068
(<r2>)1/2 11.361