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: HF/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 HF/6-311G*
 hartrees
Energy at 0K-210.039856
Energy at 298.15K-210.047438
HF Energy-210.039856
Nuclear repulsion energy159.907159
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 HF/6-311G*
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' 3270 2957 57.45      
2 A' 3264 2952 66.50      
3 A' 3216 2908 3.25      
4 A' 3196 2890 23.89      
5 A' 2588 2341 14.70      
6 A' 1644 1487 10.68      
7 A' 1634 1478 6.68      
8 A' 1564 1414 3.14      
9 A' 1483 1342 8.92      
10 A' 1299 1174 3.26      
11 A' 1230 1112 5.82      
12 A' 989 894 0.45      
13 A' 813 735 3.14      
14 A' 602 545 1.61      
15 A' 380 343 0.45      
16 A' 314 284 1.77      
17 A' 244 221 2.47      
18 A" 3265 2953 26.21      
19 A" 3256 2944 0.80      
20 A" 3191 2886 27.34      
21 A" 1623 1467 3.63      
22 A" 1621 1466 0.02      
23 A" 1543 1395 2.10      
24 A" 1455 1316 0.21      
25 A" 1225 1108 1.84      
26 A" 1047 947 0.26      
27 A" 1018 921 1.27      
28 A" 633 572 0.02      
29 A" 245 222 0.01      
30 A" 212 192 6.23      

Unscaled Zero Point Vibrational Energy (zpe) 24030.3 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 21733.0 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 HF/6-311G*
ABC
0.26565 0.13361 0.09735

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.394 -2.160 0.000
C2 0.029 -1.090 0.000
C3 -0.437 0.310 0.000
C4 0.029 1.024 1.274
C5 0.029 1.024 -1.274
H6 -1.521 0.268 0.000
H7 -0.356 2.037 1.289
H8 -0.323 0.515 2.163
H9 1.111 1.071 1.318
H10 -0.356 2.037 -1.289
H11 -0.323 0.515 -2.163
H12 1.111 1.071 -1.318

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.12982.60633.44853.44853.09214.45393.51333.56284.45393.51333.5628
C21.12981.47652.46852.46852.06143.40452.71612.75343.40452.71612.7534
C32.60631.47651.53291.53291.08492.15602.17532.17112.15602.17532.1711
C43.44852.46851.53292.54802.14461.08411.08301.08382.78243.49202.8089
C53.44852.46851.53292.54802.14462.78243.49202.80891.08411.08301.0838
H63.09212.06141.08492.14462.14462.47972.48513.05172.47972.48513.0517
H74.45393.40452.15601.08412.78242.47971.75591.75662.57723.77233.1429
H83.51332.71612.17531.08303.49202.48511.75591.75483.77234.32543.8051
H93.56282.75342.17111.08382.80893.05171.75661.75483.14293.80512.6355
H104.45393.40452.15602.78241.08412.47972.57723.77233.14291.75591.7566
H113.51332.71612.17533.49201.08302.48513.77234.32543.80511.75591.7548
H123.56282.75342.17112.80891.08383.05173.14293.80512.63551.75661.7548

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 179.610 C2 C3 C4 110.206
C2 C3 C5 110.206 C2 C3 H6 106.171
C3 C4 H7 109.759 C3 C4 H8 111.362
C3 C4 H9 110.967 C3 C5 H10 109.759
C3 C5 H11 111.362 C3 C5 H12 110.967
C4 C3 C5 112.424 C4 C3 H6 108.809
C5 C3 H6 108.809 H7 C4 H8 108.244
H7 C4 H9 108.244 H8 C4 H9 108.164
H10 C5 H11 108.244 H10 C5 H12 108.244
H11 C5 H12 108.164
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.339      
2 C 0.184      
3 C -0.275      
4 C -0.597      
5 C -0.597      
6 H 0.255      
7 H 0.223      
8 H 0.234      
9 H 0.227      
10 H 0.223      
11 H 0.234      
12 H 0.227      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.216 4.040 0.000 4.219
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.905 1.781 0.000
y 1.781 -40.106 0.000
z 0.000 0.000 -30.528
Traceless
 xyz
x 4.412 1.781 0.000
y 1.781 -9.389 0.000
z 0.000 0.000 4.977
Polar
3z2-r29.954
x2-y29.201
xy1.781
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.619 -0.563 0.000
y -0.563 7.840 0.000
z 0.000 0.000 6.168


<r2> (average value of r2) Å2
<r2> 128.405
(<r2>)1/2 11.332