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: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-264.197667
Energy at 298.15K-264.201560
Nuclear repulsion energy178.713052
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 B3PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3079 2951 0.00      
2 Ag 2383 2284 0.00      
3 Ag 1473 1412 0.00      
4 Ag 1388 1330 0.00      
5 Ag 1039 996 0.00      
6 Ag 978 937 0.00      
7 Ag 518 496 0.00      
8 Ag 224 215 0.00      
9 Au 3142 3011 0.22      
10 Au 1210 1160 0.12      
11 Au 771 739 4.62      
12 Au 410 393 0.09      
13 Au 80 77 20.89      
14 Bg 3124 2994 0.00      
15 Bg 1316 1261 0.00      
16 Bg 1033 990 0.00      
17 Bg 369 354 0.00      
18 Bu 3088 2960 2.39      
19 Bu 2384 2285 10.18      
20 Bu 1478 1417 16.21      
21 Bu 1290 1236 1.45      
22 Bu 948 909 4.25      
23 Bu 530 508 1.50      
24 Bu 132 126 22.05      

Unscaled Zero Point Vibrational Energy (zpe) 16193.6 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 15520.0 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 B3PW91/6-31G**
ABC
0.85833 0.04925 0.04740

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.772 0.000
C2 0.000 -0.772 0.000
C3 -1.360 1.304 0.000
C4 1.360 -1.304 0.000
N5 2.447 -1.712 0.000
N6 -2.447 1.712 0.000
H7 0.528 1.150 0.881
H8 0.528 1.150 -0.881
H9 -0.528 -1.150 0.881
H10 -0.528 -1.150 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.54391.46062.48173.48652.62101.09501.09502.17952.1795
C21.54392.48171.46062.62103.48652.17952.17951.09501.0950
C31.46062.48173.76844.85661.16042.08992.08992.73682.7368
C42.48171.46063.76841.16044.85662.73682.73682.08992.0899
N53.48652.62104.85661.16045.97213.55633.55633.15333.1533
N62.62103.48651.16044.85665.97213.15333.15333.55633.5563
H71.09502.17952.08992.73683.55633.15331.76262.53143.0846
H81.09502.17952.08992.73683.55633.15331.76263.08462.5314
H92.17951.09502.73682.08993.15333.55632.53143.08461.7626
H102.17951.09502.73682.08993.15333.55633.08462.53141.7626

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.353 C1 C2 H9 110.205
C1 C2 H10 110.205 C1 C3 N6 179.240
C2 C1 C3 111.353 C2 C1 H7 110.205
C2 C1 H8 110.205 C2 C4 N5 179.240
C3 C1 H7 108.887 C3 C1 H8 108.887
C4 C2 H9 108.887 C4 C2 H10 108.887
H7 C1 H8 107.197 H9 C2 H10 107.197
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.305      
2 C -0.305      
3 C 0.353      
4 C 0.353      
5 N -0.470      
6 N -0.470      
7 H 0.211      
8 H 0.211      
9 H 0.211      
10 H 0.211      


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 -52.501 12.988 0.000
y 12.988 -39.162 0.000
z 0.000 0.000 -32.355
Traceless
 xyz
x -16.742 12.988 0.000
y 12.988 3.266 0.000
z 0.000 0.000 13.476
Polar
3z2-r226.952
x2-y2-13.339
xy12.988
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 209.919
(<r2>)1/2 14.489