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 C5H9N (Butanenitrile, 2-methyl-)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-249.927914
Energy at 298.15K-249.937424
HF Energy-249.074039
Nuclear repulsion energy219.923645
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 MP2/6-311G*
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 3189 3031 14.57      
2 A 3178 3020 16.18      
3 A 3176 3018 30.41      
4 A 3165 3007 25.90      
5 A 3137 2981 7.05      
6 A 3088 2935 11.62      
7 A 3086 2933 23.13      
8 A 3079 2926 4.16      
9 A 3079 2926 11.55      
10 A 2190 2081 0.16      
11 A 1554 1477 3.21      
12 A 1543 1466 18.57      
13 A 1537 1461 10.92      
14 A 1533 1457 7.14      
15 A 1523 1447 0.32      
16 A 1451 1379 6.55      
17 A 1447 1375 8.09      
18 A 1406 1337 0.66      
19 A 1377 1308 0.78      
20 A 1343 1276 0.86      
21 A 1310 1245 0.53      
22 A 1211 1151 1.77      
23 A 1170 1112 0.16      
24 A 1137 1081 5.87      
25 A 1079 1025 1.34      
26 A 1022 972 1.35      
27 A 992 942 5.22      
28 A 921 875 0.36      
29 A 825 784 0.69      
30 A 779 740 3.31      
31 A 561 533 0.10      
32 A 535 509 0.88      
33 A 409 389 0.25      
34 A 319 303 0.42      
35 A 304 289 0.18      
36 A 218 207 0.05      
37 A 203 193 1.95      
38 A 159 151 4.99      
39 A 96 92 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 29164.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 27714.9 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 MP2/6-311G*
ABC
0.21872 0.07346 0.05891

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.520 -0.285 0.133
N2 -2.601 -0.670 -0.111
C3 -0.014 1.633 -0.154
H4 -0.124 1.649 -1.241
H5 -0.778 2.281 0.279
H6 0.966 2.039 0.104
C7 2.302 -0.419 0.060
H8 2.469 -0.356 1.139
H9 2.974 -1.184 -0.337
H10 2.593 0.535 -0.385
C11 0.852 -0.779 -0.251
H12 0.689 -0.800 -1.335
H13 0.632 -1.785 0.120
C14 -0.156 0.201 0.374
H15 -0.004 0.207 1.462

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6 C7 H8 H9 H10 C11 H12 H13 C14 H15
C11.17332.45542.75292.67583.40273.82534.11414.60724.22612.45322.70202.62271.46772.0745
N21.17333.46363.57613.49104.48364.91295.23125.60375.33943.45793.51303.42782.64043.1600
C32.45543.46361.09291.09171.09123.10153.43384.11032.83832.56392.79383.48841.53302.1546
H42.75293.57611.09291.77131.77483.44354.05104.29473.05942.79772.58223.77032.17013.0657
H52.67583.49101.09171.77131.76864.10204.27045.14433.85423.50743.77494.30632.17392.5098
H63.40274.48361.09121.77481.76862.79803.01103.82272.26952.84193.19443.83772.17012.4774
C73.82534.91293.10153.44354.10202.79801.09401.09251.09191.52612.16602.15832.55462.7710
H84.11415.23123.43384.05104.27043.01101.09401.76581.76982.17383.07952.54002.79002.5570
H94.60725.60374.11034.29475.14433.82271.09251.76581.76102.16222.52302.46093.49583.7472
H104.22615.33942.83833.05943.85422.26951.09191.76981.76102.18522.51183.07922.87183.2040
C112.45323.45792.56392.79773.50742.84191.52612.17382.16222.18521.09581.09471.53842.1541
H122.70203.51302.79382.58223.77493.19442.16603.07952.52302.51181.09581.75802.15323.0521
H132.62273.42783.48843.77034.30633.83772.15832.54002.46093.07921.09471.75802.15082.4842
C141.46772.64041.53302.17012.17392.17012.55462.79003.49582.87181.53842.15322.15081.0978
H152.07453.16002.15463.06572.50982.47742.77102.55703.74723.20402.15413.05212.48421.0978

picture of Butanenitrile, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C14 C3 109.800 C1 C14 C11 109.360
C1 C14 H15 107.034 N2 C1 C14 177.426
C3 C14 C11 113.181 C3 C14 H15 108.836
H4 C3 H5 108.353 H4 C3 H6 108.695
H4 C3 C14 110.338 H5 C3 H6 108.234
H5 C3 C14 110.712 H6 C3 C14 110.440
C7 C11 H12 110.323 C7 C11 H13 109.781
C7 C11 C14 112.940 H8 C7 H9 107.725
H8 C7 H10 108.127 H8 C7 C11 111.053
H9 C7 H10 107.449 H9 C7 C11 110.218
H10 C7 C11 112.094 C11 C14 H15 108.434
H12 C11 H13 106.748 H12 C11 C14 108.481
H13 C11 C14 108.357
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability