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/TZVP

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/TZVP
 hartrees
Energy at 0K-211.371568
Energy at 298.15K-211.378827
HF Energy-211.371568
Nuclear repulsion energy159.388289
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/TZVP
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' 3138 3026 19.01      
2 A' 3132 3020 31.49      
3 A' 3053 2944 16.14      
4 A' 3044 2935 2.49      
5 A' 2364 2280 11.73      
6 A' 1508 1454 11.59      
7 A' 1499 1445 10.52      
8 A' 1422 1372 3.88      
9 A' 1350 1302 5.54      
10 A' 1194 1152 3.58      
11 A' 1128 1088 5.13      
12 A' 934 901 0.97      
13 A' 776 749 0.45      
14 A' 556 536 1.26      
15 A' 351 338 0.21      
16 A' 283 273 1.02      
17 A' 219 211 1.83      
18 A" 3137 3025 12.20      
19 A" 3128 3017 0.37      
20 A" 3051 2942 15.29      
21 A" 1487 1434 4.43      
22 A" 1485 1432 0.50      
23 A" 1400 1350 5.44      
24 A" 1321 1273 0.19      
25 A" 1133 1092 3.27      
26 A" 974 940 0.16      
27 A" 940 907 2.14      
28 A" 580 559 0.06      
29 A" 223 216 0.03      
30 A" 190 183 4.39      

Unscaled Zero Point Vibrational Energy (zpe) 22499.7 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 21696.5 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 B3PW91/TZVP
ABC
0.26556 0.13289 0.09698

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.398 -2.172 0.000
C2 0.027 -1.081 0.000
C3 -0.433 0.308 0.000
C4 0.027 1.026 1.274
C5 0.027 1.026 -1.274
H6 -1.528 0.265 0.000
H7 -0.368 2.044 1.284
H8 -0.323 0.511 2.169
H9 1.117 1.080 1.314
H10 -0.368 2.044 -1.284
H11 -0.323 0.511 -2.169
H12 1.117 1.080 -1.314

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.15222.61533.46173.46173.10624.47273.52433.58004.47273.52433.5800
C21.15221.46322.46172.46172.05693.40122.71322.75373.40122.71322.7537
C32.61531.46321.53281.53281.09602.16022.18142.17382.16022.18142.1738
C43.46172.46171.53282.54742.14971.09191.09081.09172.78123.49872.8083
C53.46172.46171.53282.54742.14972.78123.49872.80831.09191.09081.0917
H63.10622.05691.09602.14972.14972.48212.49373.06412.48212.49373.0641
H74.47273.40122.16021.09192.78122.48211.77061.77022.56843.77863.1438
H83.52432.71322.18141.09083.49872.49371.77061.76883.77864.33833.8118
H93.58002.75372.17381.09172.80833.06411.77021.76883.14383.81182.6281
H104.47273.40122.16022.78121.09192.48212.56843.77863.14381.77061.7702
H113.52432.71322.18143.49871.09082.49373.77864.33833.81181.77061.7688
H123.58002.75372.17382.80831.09173.06413.14383.81182.62811.77021.7688

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 179.563 C2 C3 C4 110.483
C2 C3 C5 110.483 C2 C3 H6 106.090
C3 C4 H7 109.626 C3 C4 H8 111.380
C3 C4 H9 110.721 C3 C5 H10 109.626
C3 C5 H11 111.380 C3 C5 H12 110.721
C4 C3 C5 112.389 C4 C3 H6 108.580
C5 C3 H6 108.580 H7 C4 H8 108.425
H7 C4 H9 108.325 H8 C4 H9 108.278
H10 C5 H11 108.425 H10 C5 H12 108.325
H11 C5 H12 108.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.116      
2 C -0.030      
3 C -0.114      
4 C -0.380      
5 C -0.380      
6 H 0.168      
7 H 0.142      
8 H 0.148      
9 H 0.136      
10 H 0.142      
11 H 0.148      
12 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.178 3.974 0.000 4.145
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.595 1.773 0.000
y 1.773 -39.569 0.000
z 0.000 0.000 -30.035
Traceless
 xyz
x 4.207 1.773 0.000
y 1.773 -9.254 0.000
z 0.000 0.000 5.047
Polar
3z2-r210.095
x2-y28.974
xy1.773
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.275 -0.626 0.000
y -0.626 8.933 0.000
z 0.000 0.000 6.950


<r2> (average value of r2) Å2
<r2> 128.546
(<r2>)1/2 11.338