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: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-210.706174
Energy at 298.15K-210.713486
HF Energy-209.995098
Nuclear repulsion energy158.592337
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 CCD/6-31G*
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' 3175 3006 20.31      
2 A' 3171 3001 34.67      
3 A' 3087 2922 14.12      
4 A' 3084 2919 4.16      
5 A' 2376 2249 0.72      
6 A' 1561 1477 11.04      
7 A' 1553 1470 7.16      
8 A' 1479 1400 4.27      
9 A' 1400 1325 6.24      
10 A' 1236 1169 2.50      
11 A' 1163 1101 5.47      
12 A' 965 913 0.40      
13 A' 791 749 1.01      
14 A' 557 527 1.12      
15 A' 364 344 0.23      
16 A' 295 279 0.88      
17 A' 223 211 2.46      
18 A" 3174 3004 12.64      
19 A" 3167 2997 0.22      
20 A" 3085 2920 14.56      
21 A" 1542 1459 3.50      
22 A" 1540 1458 0.35      
23 A" 1459 1381 5.20      
24 A" 1382 1308 0.22      
25 A" 1176 1113 1.83      
26 A" 1007 953 0.37      
27 A" 966 915 1.88      
28 A" 570 540 0.03      
29 A" 238 225 0.01      
30 A" 187 177 4.81      

Unscaled Zero Point Vibrational Energy (zpe) 22985.9 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 21756.2 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 CCD/6-31G*
ABC
0.26489 0.13098 0.09603

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.406 -2.188 0.000
C2 0.027 -1.087 0.000
C3 -0.442 0.315 0.000
C4 0.027 1.032 1.274
C5 0.027 1.032 -1.274
H6 -1.540 0.276 0.000
H7 -0.363 2.056 1.285
H8 -0.326 0.515 2.173
H9 1.121 1.077 1.308
H10 -0.363 2.056 -1.285
H11 -0.326 0.515 -2.173
H12 1.121 1.077 -1.308

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.16472.64283.48373.48373.14044.50083.54493.58954.50083.54493.5895
C21.16471.47812.47242.47242.07713.41792.72262.75523.41792.72262.7552
C32.64281.47811.53511.53511.09892.16552.18502.17592.16552.18502.1759
C43.48372.47241.53512.54772.15601.09601.09501.09582.78353.50282.8046
C53.48372.47241.53512.54772.15602.78353.50282.80461.09601.09501.0958
H63.14042.07711.09892.15602.15602.49072.50033.07142.49072.50033.0714
H74.50083.41792.16551.09602.78352.49071.77871.77822.56953.78543.1438
H83.54492.72262.18501.09503.50282.50031.77871.77683.78544.34533.8111
H93.58952.75522.17591.09582.80463.07141.77821.77683.14383.81112.6159
H104.50083.41792.16552.78351.09602.49072.56953.78543.14381.77871.7782
H113.54492.72262.18503.50281.09502.50033.78544.34533.81111.77871.7768
H123.58952.75522.17592.80461.09583.07143.14383.81112.61591.77821.7768

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 179.496 C2 C3 C4 110.257
C2 C3 C5 110.257 C2 C3 H6 106.490
C3 C4 H7 109.649 C3 C4 H8 111.251
C3 C4 H9 110.481 C3 C5 H10 109.649
C3 C5 H11 111.251 C3 C5 H12 110.481
C4 C3 C5 112.160 C4 C3 H6 108.746
C5 C3 H6 108.746 H7 C4 H8 108.548
H7 C4 H9 108.447 H8 C4 H9 108.396
H10 C5 H11 108.548 H10 C5 H12 108.447
H11 C5 H12 108.396
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability