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: MP2=FULL/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 MP2=FULL/6-31G
 hartrees
Energy at 0K-210.393437
Energy at 298.15K-210.400651
HF Energy-209.894603
Nuclear repulsion energy156.647011
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 MP2=FULL/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' 3161 3003 27.14      
2 A' 3157 2999 42.90      
3 A' 3066 2913 15.68      
4 A' 3053 2900 7.87      
5 A' 2093 1988 1.95      
6 A' 1579 1500 11.53      
7 A' 1573 1495 7.99      
8 A' 1494 1420 3.59      
9 A' 1399 1330 4.25      
10 A' 1244 1182 2.72      
11 A' 1174 1115 5.61      
12 A' 942 895 0.36      
13 A' 764 726 0.49      
14 A' 536 509 1.20      
15 A' 364 346 0.22      
16 A' 285 271 0.30      
17 A' 200 190 1.75      
18 A" 3159 3001 15.94      
19 A" 3152 2995 0.81      
20 A" 3065 2912 18.14      
21 A" 1564 1486 1.85      
22 A" 1562 1484 2.44      
23 A" 1476 1402 4.88      
24 A" 1385 1316 0.51      
25 A" 1161 1103 3.54      
26 A" 1008 958 0.06      
27 A" 978 930 1.94      
28 A" 539 512 0.82      
29 A" 238 226 0.02      
30 A" 170 161 3.30      

Unscaled Zero Point Vibrational Energy (zpe) 22768.5 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 21632.3 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 MP2=FULL/6-31G
ABC
0.26095 0.12670 0.09329

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.417 -2.232 0.000
C2 0.025 -1.096 0.000
C3 -0.443 0.315 0.000
C4 0.025 1.051 1.285
C5 0.025 1.051 -1.285
H6 -1.545 0.290 0.000
H7 -0.369 2.076 1.285
H8 -0.333 0.537 2.187
H9 1.122 1.097 1.321
H10 -0.369 2.076 -1.285
H11 -0.333 0.537 -2.187
H12 1.122 1.097 -1.321

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
N11.20162.68813.54713.54713.19574.56393.60783.65004.56393.60783.6500
C21.20161.48652.50222.50222.09453.44532.75322.78533.44532.75322.7853
C32.68811.48651.55311.55311.10282.18132.20102.19192.18132.20102.1919
C43.54712.50221.55312.57022.16701.09851.09761.09842.79473.52802.8279
C53.54712.50221.55312.57022.16702.79473.52802.82791.09851.09761.0984
H63.19572.09451.10282.16702.16702.49482.51273.08372.49482.51273.0837
H74.56393.44532.18131.09852.79472.49481.78401.78422.56933.79743.1578
H83.60782.75322.20101.09763.52802.51271.78401.78293.79744.37393.8386
H93.65002.78532.19191.09842.82793.08371.78421.78293.15783.83862.6421
H104.56393.44532.18132.79471.09852.49482.56933.79743.15781.78401.7842
H113.60782.75322.20103.52801.09762.51273.79744.37393.83861.78401.7829
H123.65002.78532.19192.82791.09843.08373.15783.83862.64211.78421.7829

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 179.276 C2 C3 C4 110.799
C2 C3 C5 110.799 C2 C3 H6 107.050
C3 C4 H7 109.509 C3 C4 H8 111.109
C3 C4 H9 110.346 C3 C5 H10 109.509
C3 C5 H11 111.109 C3 C5 H12 110.346
C4 C3 C5 111.681 C4 C3 H6 108.163
C5 C3 H6 108.163 H7 C4 H8 108.649
H7 C4 H9 108.610 H8 C4 H9 108.562
H10 C5 H11 108.649 H10 C5 H12 108.610
H11 C5 H12 108.562
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability