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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: B3LYP/3-21G*

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/3-21G*
 hartrees
Energy at 0K-262.852828
Energy at 298.15K-262.857015
Nuclear repulsion energy178.342043
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/3-21G*
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 3074 2957 0.00      
2 Ag 2355 2266 0.00      
3 Ag 1532 1474 0.00      
4 Ag 1401 1347 0.00      
5 Ag 1006 968 0.00      
6 Ag 984 947 0.00      
7 Ag 543 522 0.00      
8 Ag 259 249 0.00      
9 Au 3129 3010 0.41      
10 Au 1285 1236 0.02      
11 Au 798 768 4.03      
12 Au 479 461 0.77      
13 Au 84 81 17.46      
14 Bg 3108 2990 0.00      
15 Bg 1366 1314 0.00      
16 Bg 1076 1035 0.00      
17 Bg 441 424 0.00      
18 Bu 3083 2966 2.61      
19 Bu 2358 2268 1.98      
20 Bu 1533 1475 22.26      
21 Bu 1346 1295 3.10      
22 Bu 938 902 5.83      
23 Bu 587 565 4.70      
24 Bu 148 142 16.97      

Unscaled Zero Point Vibrational Energy (zpe) 16456.1 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 15830.7 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/3-21G*
ABC
0.84819 0.04913 0.04726

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.782 0.000
C2 0.000 -0.782 0.000
C3 -1.362 1.302 0.000
C4 1.362 -1.302 0.000
N5 2.450 -1.713 0.000
N6 -2.450 1.713 0.000
H7 0.531 1.146 0.886
H8 0.531 1.146 -0.886
H9 -0.531 -1.146 0.886
H10 -0.531 -1.146 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.56311.45812.48923.49712.62171.09571.09572.18742.1874
C21.56312.48921.45812.62173.49712.18742.18741.09571.0957
C31.45812.48923.76844.86081.16362.09632.09632.73302.7330
C42.48921.45813.76841.16364.86082.73302.73302.09632.0963
N53.49712.62174.86081.16365.98023.55633.55633.16193.1619
N62.62173.49711.16364.86085.98023.16193.16193.55633.5563
H71.09572.18742.09632.73303.55633.16191.77212.52723.0866
H81.09572.18742.09632.73303.55633.16191.77213.08662.5272
H92.18741.09572.73302.09633.16193.55632.52723.08661.7721
H102.18741.09572.73302.09633.16193.55633.08662.52721.7721

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.907 C1 C2 H9 109.453
C1 C2 H10 109.453 C1 C3 N6 179.807
C2 C1 C3 110.907 C2 C1 H7 109.453
C2 C1 H8 109.453 C2 C4 N5 179.807
C3 C1 H7 109.522 C3 C1 H8 109.522
C4 C2 H9 109.522 C4 C2 H10 109.522
H7 C1 H8 107.930 H9 C2 H10 107.930
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.429      
2 C -0.429      
3 C 0.348      
4 C 0.348      
5 N -0.465      
6 N -0.465      
7 H 0.273      
8 H 0.273      
9 H 0.273      
10 H 0.273      


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 -52.104 12.371 0.000
y 12.371 -39.240 0.000
z 0.000 0.000 -32.723
Traceless
 xyz
x -16.122 12.371 0.000
y 12.371 3.173 0.000
z 0.000 0.000 12.949
Polar
3z2-r225.898
x2-y2-12.864
xy12.371
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.558 -2.126 0.000
y -2.126 5.576 0.000
z 0.000 0.000 4.159


<r2> (average value of r2) Å2
<r2> 210.458
(<r2>)1/2 14.507