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: B3LYP/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP/CEP-31G
 hartrees
Energy at 0K-43.482801
Energy at 298.15K-43.492129
Nuclear repulsion energy118.490549
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 B3LYP/CEP-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 3145 3046 43.03      
2 A 3140 3041 59.18      
3 A 3128 3030 95.77      
4 A 3118 3020 63.42      
5 A 3095 2997 4.78      
6 A 3052 2956 22.97      
7 A 3050 2953 30.22      
8 A 3045 2949 11.79      
9 A 3034 2939 37.88      
10 A 2242 2171 11.16      
11 A 1523 1475 4.31      
12 A 1517 1469 17.87      
13 A 1513 1465 10.05      
14 A 1507 1460 13.23      
15 A 1501 1454 0.21      
16 A 1431 1386 7.31      
17 A 1425 1380 7.67      
18 A 1381 1337 1.04      
19 A 1339 1296 1.07      
20 A 1320 1278 1.55      
21 A 1283 1242 0.43      
22 A 1187 1150 2.98      
23 A 1144 1108 0.37      
24 A 1120 1085 12.21      
25 A 1048 1014 2.25      
26 A 996 965 0.82      
27 A 982 951 11.57      
28 A 890 862 0.14      
29 A 810 784 2.65      
30 A 762 738 5.27      
31 A 550 533 1.09      
32 A 524 507 2.80      
33 A 388 376 0.45      
34 A 317 307 0.12      
35 A 272 263 0.13      
36 A 213 206 0.09      
37 A 200 194 1.53      
38 A 161 156 4.30      
39 A 79 76 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 28715.8 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 27808.3 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 B3LYP/CEP-31G
ABC
0.20986 0.07079 0.05674

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.609 -0.352 0.127
N2 -2.704 -0.771 -0.082
C3 -0.136 1.650 -0.147
H4 -0.265 1.684 -1.242
H5 -0.915 2.280 0.313
H6 0.847 2.079 0.104
C7 2.293 -0.407 0.085
H8 2.433 -0.397 1.181
H9 2.994 -1.148 -0.337
H10 2.581 0.584 -0.307
C11 0.829 -0.777 -0.290
H12 0.698 -0.751 -1.386
H13 0.620 -1.812 0.033
C14 -0.228 0.178 0.371
H15 -0.070 0.172 1.465

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6 C7 H8 H9 H10 C11 H12 H13 C14 H15
C11.19102.50052.79792.72863.45573.90174.17644.69344.31502.50962.78732.66591.49842.1054
N21.19103.52963.64983.55894.55705.01235.30255.71545.46053.53923.64303.48502.68943.1970
C32.50053.52961.10311.10231.10183.19103.54284.20222.92352.61572.82733.54801.56352.1884
H42.79793.64981.10311.78741.79043.56034.18114.41143.19212.85692.62233.82532.20773.1075
H52.72863.55891.10231.78741.78584.19044.37325.23913.93503.57073.83044.37932.21242.5470
H63.45574.55701.10181.79041.78582.87543.13083.90032.32612.88273.20153.89792.20062.5161
C73.90175.01233.19103.56034.19042.87541.10561.10351.10351.55502.19682.18462.60362.7969
H84.17645.30253.54284.18114.37323.13081.10561.78401.78802.20883.11902.56992.84012.5818
H94.69345.71544.20224.41145.23913.90031.10351.78401.78022.19622.55562.49203.55513.7912
H104.31505.46052.92353.19213.93502.32611.10351.78801.78022.21822.54853.11442.91863.2153
C112.50963.53922.61572.85693.57072.88271.55502.20882.19622.21821.10471.10421.57072.1886
H122.78733.64302.82732.62233.83043.20152.19683.11902.55562.54851.10471.77412.19283.0940
H132.66593.48503.54803.82534.37933.89792.18462.56992.49203.11441.10421.77412.18922.5421
C141.49842.68941.56352.20772.21242.20062.60362.84013.55512.91861.57072.19282.18921.1057
H152.10543.19702.18843.10752.54702.51612.79692.58183.79123.21532.18863.09402.54211.1057

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 109.479 C1 C14 C11 109.688
C1 C14 H15 106.929 N2 C1 C14 179.234
C3 C14 C11 113.139 C3 C14 H15 108.938
H4 C3 H5 108.280 H4 C3 H6 108.581
H4 C3 C14 110.577 H5 C3 H6 108.234
H5 C3 C14 110.996 H6 C3 C14 110.096
C7 C11 H12 110.222 C7 C11 H13 109.308
C7 C11 C14 112.812 H8 C7 H9 107.717
H8 C7 H10 108.074 H8 C7 C11 111.113
H9 C7 H10 107.529 H9 C7 C11 110.248
H10 C7 C11 111.989 C11 C14 H15 108.473
H12 C11 H13 106.868 H12 C11 C14 108.847
H13 C11 C14 108.595
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.640      
2 N 0.393      
3 C -0.512      
4 H 0.157      
5 H 0.177      
6 H 0.166      
7 C -0.417      
8 H 0.131      
9 H 0.178      
10 H 0.135      
11 C -0.264      
12 H 0.141      
13 H 0.156      
14 C 0.036      
15 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.130 1.463 0.536 4.414
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.161 -4.577 -0.951
y -4.577 -37.574 -0.165
z -0.951 -0.165 -36.492
Traceless
 xyz
x -13.129 -4.577 -0.951
y -4.577 5.753 -0.165
z -0.951 -0.165 7.376
Polar
3z2-r214.752
x2-y2-12.588
xy-4.577
xz-0.951
yz-0.165


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.386 0.621 0.287
y 0.621 7.680 0.079
z 0.287 0.079 6.601


<r2> (average value of r2) Å2
<r2> 164.898
(<r2>)1/2 12.841