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All results from a given calculation for C4H5N ((E)-2-Butenenitrile)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-208.727901
Energy at 298.15K-208.732392
Nuclear repulsion energy137.322881
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 PBEPBE/3-21G
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' 3106 3078 11.14      
2 A' 3091 3063 0.59      
3 A' 3064 3036 7.22      
4 A' 2971 2944 7.88      
5 A' 2235 2214 9.01      
6 A' 1649 1634 15.67      
7 A' 1499 1486 21.22      
8 A' 1411 1399 9.68      
9 A' 1324 1312 0.62      
10 A' 1310 1298 0.02      
11 A' 1118 1107 1.65      
12 A' 1025 1015 7.06      
13 A' 905 897 10.63      
14 A' 582 577 0.11      
15 A' 405 402 1.13      
16 A' 187 185 2.01      
17 A" 3022 2994 8.06      
18 A" 1494 1480 12.47      
19 A" 1063 1053 2.42      
20 A" 965 956 54.21      
21 A" 816 808 0.85      
22 A" 548 543 2.71      
23 A" 192 190 1.78      
24 A" 174 172 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 17076.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 16920.8 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 PBEPBE/3-21G
ABC
1.26783 0.07540 0.07214

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.660 0.409 0.000
H2 2.645 -1.151 0.890
H3 2.645 -1.151 -0.890
C4 2.258 -0.618 0.000
H5 0.255 -1.597 0.000
C6 0.753 -0.619 0.000
H7 0.480 1.490 0.000
C8 0.000 0.504 0.000
N9 -2.603 0.491 0.000
C10 -1.422 0.493 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.79561.79561.10273.13132.16652.43382.66175.26374.0828
H21.79561.77911.10682.58872.15723.52923.24435.57044.4761
H31.79561.77911.10682.58872.15723.52923.24435.57044.4761
C41.10271.10681.10682.22911.50502.75812.52134.98603.8441
H53.13132.58872.58872.22911.09683.09512.11603.53972.6799
C62.16652.15722.15721.50501.09682.12721.35233.53502.4431
H72.43383.52923.52922.75813.09512.12721.09683.24052.1470
C82.66173.24433.24432.52132.11601.35231.09682.60311.4220
N95.26375.57045.57044.98603.53973.53503.24052.60311.1811
C104.08284.47614.47613.84412.67992.44312.14701.42201.1811

picture of (E)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H2 108.713 H1 C4 H3 108.713
H1 C4 C6 111.432 H2 C4 H3 106.974
H2 C4 C6 110.440 H3 C4 C6 110.440
C4 C6 H5 117.043 C4 C6 C8 123.787
H5 C6 C8 119.170 C6 C8 H7 120.229
C6 C8 C10 123.421 H7 C8 C10 116.350
C8 C10 N9 179.691
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.223      
2 H 0.236      
3 H 0.236      
4 C -0.652      
5 H 0.226      
6 C -0.132      
7 H 0.242      
8 C -0.195      
9 N -0.485      
10 C 0.301      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  4.247 -0.679 0.000 4.301
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.863 0.853 0.000
y 0.853 -26.996 0.000
z 0.000 0.000 -30.926
Traceless
 xyz
x -7.902 0.853 0.000
y 0.853 6.898 0.000
z 0.000 0.000 1.003
Polar
3z2-r22.007
x2-y2-9.867
xy0.853
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.514 -1.798 0.000
y -1.798 5.876 0.000
z 0.000 0.000 3.179


<r2> (average value of r2) Å2
<r2> 153.088
(<r2>)1/2 12.373