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: MP4/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/cc-pVTZ
 hartrees
Energy at 0K-211.014275
Energy at 298.15K-211.021455
HF Energy-210.066535
Nuclear repulsion energy158.768979
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 MP4/cc-pVTZ
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' 3135 3039        
2 A' 3129 3032        
3 A' 3056 2962        
4 A' 3044 2950        
5 A' 2166 2099        
6 A' 1515 1468        
7 A' 1506 1460        
8 A' 1422 1378        
9 A' 1350 1309        
10 A' 1196 1159        
11 A' 1125 1091        
12 A' 936 907        
13 A' 770 746        
14 A' 533 517        
15 A' 345 335        
16 A' 278 270        
17 A' 210 204        
18 A" 3134 3037        
19 A" 3125 3028        
20 A" 3043 2949        
21 A" 1495 1449        
22 A" 1493 1447        
23 A" 1401 1358        
24 A" 1328 1287        
25 A" 1138 1103        
26 A" 975 945        
27 A" 933 905        
28 A" 552 535        
29 A" 218 211        
30 A" 179 174        

Unscaled Zero Point Vibrational Energy (zpe) 22364.1 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 21675.3 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 MP4/cc-pVTZ
ABC
0.26587 0.13121 0.09642

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.150 -2.220 0.000
C2 -0.108 -1.077 0.000
C3 -0.409 0.365 0.000
C4 0.150 1.019 1.270
C5 0.150 1.019 -1.270
H6 -1.499 0.459 0.000
H7 -0.105 2.081 1.278
H8 -0.258 0.555 2.168
H9 1.238 0.924 1.297
H10 -0.105 2.081 -1.278
H11 -0.258 0.555 -2.168
H12 1.238 0.924 -1.297

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.17272.64553.48003.48003.14694.49433.54543.57124.49433.54543.5712
C21.17271.47292.46462.46462.07223.40622.71762.73823.40622.71762.7382
C32.64551.47291.53461.53461.09412.16082.18182.16972.16082.18182.1697
C43.48002.46461.53462.54072.15621.09161.09051.09182.77213.49382.7897
C53.48002.46461.53462.54072.15622.77213.49382.78971.09161.09051.0918
H63.14692.07221.09412.15622.15622.49132.50023.06432.49132.50023.0643
H74.49433.40622.16081.09162.77212.49131.77351.77212.55563.77203.1257
H83.54542.71762.18181.09053.49382.50021.77351.77003.77204.33653.7924
H93.57122.73822.16971.09182.78973.06431.77211.77003.12573.79242.5941
H104.49433.40622.16082.77211.09162.49132.55563.77203.12571.77351.7721
H113.54542.71762.18183.49381.09052.50023.77204.33653.79241.77351.7700
H123.57122.73822.16972.78971.09183.06433.12573.79242.59411.77211.7700

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 179.036 C2 C3 C4 110.052
C2 C3 C5 110.052 C2 C3 H6 106.724
C3 C4 H7 109.568 C3 C4 H8 111.303
C3 C4 H9 110.260 C3 C5 H10 109.568
C3 C5 H11 111.303 C3 C5 H12 110.260
C4 C3 C5 111.741 C4 C3 H6 109.066
C5 C3 H6 109.066 H7 C4 H8 108.734
H7 C4 H9 108.509 H8 C4 H9 108.404
H10 C5 H11 108.734 H10 C5 H12 108.509
H11 C5 H12 108.404
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability