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 C4H4N2 (Succinonitrile)

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 C2H 1Ag
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-44.764227
Energy at 298.15K-44.767971
Nuclear repulsion energy90.335312
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
(Å4/u)
Dep P Dep U
1 Ag 3081 2975 0.00      
2 Ag 2351 2270 0.00      
3 Ag 1471 1421 0.00      
4 Ag 1380 1332 0.00      
5 Ag 1024 989 0.00      
6 Ag 955 922 0.00      
7 Ag 500 483 0.00      
8 Ag 216 209 0.00      
9 Au 3147 3039 7.30      
10 Au 1204 1163 0.13      
11 Au 755 729 3.93      
12 Au 387 374 0.49      
13 Au 75 73 21.05      
14 Bg 3126 3019 0.00      
15 Bg 1309 1264 0.00      
16 Bg 1007 972 0.00      
17 Bg 346 334 0.00      
18 Bu 3088 2982 7.85      
19 Bu 2352 2272 15.88      
20 Bu 1480 1429 15.58      
21 Bu 1279 1235 3.03      
22 Bu 920 889 9.22      
23 Bu 509 491 4.13      
24 Bu 127 123 20.32      

Unscaled Zero Point Vibrational Energy (zpe) 16044.2 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 15493.8 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 B3LYP/CEP-31G*
ABC
0.83320 0.04793 0.04612

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.781 0.000
C2 0.000 -0.781 0.000
C3 -1.392 1.307 0.000
C4 1.392 -1.307 0.000
N5 2.500 -1.708 0.000
N6 -2.500 1.708 0.000
H7 0.522 1.166 0.890
H8 0.522 1.166 -0.890
H9 -0.522 -1.166 0.890
H10 -0.522 -1.166 -0.890

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.56101.48842.50923.52792.66691.10151.10152.20282.2028
C21.56102.50921.48842.66693.52792.20282.20281.10151.1015
C31.48842.50923.81924.92381.17862.11562.11562.76852.7685
C42.50921.48843.81921.17864.92382.76852.76852.11562.1156
N53.52792.66694.92381.17866.05653.60113.60113.19693.1969
N62.66693.52791.17864.92386.05653.19693.19693.60113.6011
H71.10152.20282.11562.76853.60113.19691.78062.55433.1136
H81.10152.20282.11562.76853.60113.19691.78063.11362.5543
H92.20281.10152.76852.11563.19693.60112.55433.11361.7806
H102.20281.10152.76852.11563.19693.60113.11362.55431.7806

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.717 C1 C2 H9 110.470
C1 C2 H10 110.470 C1 C3 N6 179.191
C2 C1 C3 110.717 C2 C1 H7 110.470
C2 C1 H8 110.470 C2 C4 N5 179.191
C3 C1 H7 108.623 C3 C1 H8 108.623
C4 C2 H9 108.623 C4 C2 H10 108.623
H7 C1 H8 107.858 H9 C2 H10 107.858
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C -0.238      
3 C -0.550      
4 C -0.550      
5 N 0.393      
6 N 0.393      
7 H 0.198      
8 H 0.198      
9 H 0.198      
10 H 0.198      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -53.616 13.234 0.000
y 13.234 -39.648 0.000
z 0.000 0.000 -32.655
Traceless
 xyz
x -17.464 13.234 0.000
y 13.234 3.488 0.000
z 0.000 0.000 13.977
Polar
3z2-r227.953
x2-y2-13.968
xy13.234
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.894 -2.372 0.000
y -2.372 6.715 0.000
z 0.000 0.000 4.841


<r2> (average value of r2) Å2
<r2> 161.657
(<r2>)1/2 12.714