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: PBEPBE/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 PBEPBE/6-311G*
 hartrees
Energy at 0K-211.142992
Energy at 298.15K-211.150134
HF Energy-211.142992
Nuclear repulsion energy158.334176
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 PBEPBE/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' 3065 3033 25.17      
2 A' 3058 3027 40.71      
3 A' 2983 2952 19.40      
4 A' 2962 2931 5.30      
5 A' 2267 2244 7.48      
6 A' 1481 1466 13.90      
7 A' 1470 1454 10.77      
8 A' 1384 1370 4.25      
9 A' 1313 1300 4.52      
10 A' 1162 1150 3.64      
11 A' 1097 1086 4.59      
12 A' 914 905 1.44      
13 A' 760 752 0.38      
14 A' 541 535 1.15      
15 A' 344 341 0.14      
16 A' 279 276 0.69      
17 A' 215 213 1.60      
18 A" 3064 3032 15.54      
19 A" 3054 3023 0.57      
20 A" 2980 2949 18.70      
21 A" 1457 1442 3.40      
22 A" 1456 1441 2.05      
23 A" 1362 1348 6.66      
24 A" 1280 1266 0.48      
25 A" 1102 1090 2.82      
26 A" 949 940 0.12      
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) 21940.6 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 21712.4 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 PBEPBE/6-311G*
ABC
0.26271 0.13114 0.09582

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.406 -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 -1.542 0.270 0.000
H7 -0.372 2.058 1.291
H8 -0.324 0.515 2.184
H9 1.124 1.089 1.321
H10 -0.372 2.058 -1.291
H11 -0.324 0.515 -2.184
H12 1.124 1.089 -1.321

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.16612.63313.48473.48473.13594.50453.55083.60424.50453.55083.6042
C21.16611.46702.47322.47322.07223.42062.73022.77033.42062.73022.7703
C32.63311.46701.54131.54131.10582.17582.19702.18892.17582.19702.1889
C43.48472.47321.54132.55872.16231.10051.09921.10022.79583.51932.8232
C53.48472.47321.54132.55872.16232.79583.51932.82321.10051.09921.1002
H63.13592.07221.10582.16232.16232.49602.51283.08582.49602.51283.0858
H74.50453.42062.17581.10052.79582.49601.78311.78282.58163.80233.1621
H83.55082.73022.19701.09923.51932.51281.78311.78073.80234.36853.8357
H93.60422.77032.18891.10022.82323.08581.78281.78073.16213.83572.6419
H104.50453.42062.17582.79581.10052.49602.58163.80233.16211.78311.7828
H113.55082.73022.19703.51931.09922.51283.80234.36853.83571.78311.7807
H123.60422.77032.18892.82321.10023.08583.16213.83572.64191.78281.7807

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 179.338 C2 C3 C4 110.572
C2 C3 C5 110.572 C2 C3 H6 106.454
C3 C4 H7 109.767 C3 C4 H8 111.521
C3 C4 H9 110.813 C3 C5 H10 109.767
C3 C5 H11 111.521 C3 C5 H12 110.813
C4 C3 C5 112.199 C4 C3 H6 108.414
C5 C3 H6 108.414 H7 C4 H8 108.310
H7 C4 H9 108.211 H8 C4 H9 108.119
H10 C5 H11 108.310 H10 C5 H12 108.211
H11 C5 H12 108.119
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/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
  -1.130 3.745 0.000 3.912
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.793 1.651 0.000
y 1.651 -39.244 0.000
z 0.000 0.000 -30.339
Traceless
 xyz
x 3.999 1.651 0.000
y 1.651 -8.678 0.000
z 0.000 0.000 4.679
Polar
3z2-r29.359
x2-y28.451
xy1.651
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.080 -0.640 0.000
y -0.640 8.779 0.000
z 0.000 0.000 6.865


<r2> (average value of r2) Å2
<r2> 129.936
(<r2>)1/2 11.399