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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: B3PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-264.208145
Energy at 298.15K-264.212067
Nuclear repulsion energy179.111079
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(2df,p)
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 3070 2952 0.00      
2 Ag 2374 2282 0.00      
3 Ag 1459 1402 0.00      
4 Ag 1374 1321 0.00      
5 Ag 1038 998 0.00      
6 Ag 973 935 0.00      
7 Ag 523 502 0.00      
8 Ag 227 218 0.00      
9 Au 3133 3012 0.10      
10 Au 1202 1155 0.09      
11 Au 767 737 4.12      
12 Au 414 398 0.35      
13 Au 79 76 21.13      
14 Bg 3113 2993 0.00      
15 Bg 1308 1257 0.00      
16 Bg 1030 990 0.00      
17 Bg 377 362 0.00      
18 Bu 3080 2961 1.97      
19 Bu 2376 2284 10.59      
20 Bu 1467 1410 14.69      
21 Bu 1281 1232 2.39      
22 Bu 945 909 3.26      
23 Bu 537 516 0.79      
24 Bu 132 127 22.53      

Unscaled Zero Point Vibrational Energy (zpe) 16137.8 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 15514.9 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(2df,p)
ABC
0.85846 0.04950 0.04763

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

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 -1.358 1.301 0.000
C4 1.358 -1.301 0.000
N5 2.441 -1.705 0.000
N6 -2.441 1.705 0.000
H7 0.530 1.149 0.881
H8 0.530 1.149 -0.881
H9 -0.530 -1.149 0.881
H10 -0.530 -1.149 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.54311.45802.47823.47752.61351.09471.09472.17782.1778
C21.54312.47821.45802.61353.47752.17782.17781.09471.0947
C31.45802.47823.76204.84491.15562.08912.08912.73182.7318
C42.47821.45803.76201.15564.84492.73182.73182.08912.0891
N53.47752.61354.84491.15565.95533.54563.54563.14833.1483
N62.61353.47751.15564.84495.95533.14833.14833.54563.5456
H71.09472.17782.08912.73183.54563.14831.76112.52973.0824
H81.09472.17782.08912.73183.54563.14831.76113.08242.5297
H92.17781.09472.73182.08913.14833.54562.52973.08241.7611
H102.17781.09472.73182.08913.14833.54563.08242.52971.7611

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.299 C1 C2 H9 110.143
C1 C2 H10 110.143 C1 C3 N6 179.161
C2 C1 C3 111.299 C2 C1 H7 110.143
C2 C1 H8 110.143 C2 C4 N5 179.161
C3 C1 H7 109.022 C3 C1 H8 109.022
C4 C2 H9 109.022 C4 C2 H10 109.022
H7 C1 H8 107.108 H9 C2 H10 107.108
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.390      
2 C -0.390      
3 C 0.292      
4 C 0.292      
5 N -0.315      
6 N -0.315      
7 H 0.207      
8 H 0.207      
9 H 0.207      
10 H 0.207      


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 -52.373 12.915 0.000
y 12.915 -38.999 0.000
z 0.000 0.000 -32.193
Traceless
 xyz
x -16.777 12.915 0.000
y 12.915 3.284 0.000
z 0.000 0.000 13.493
Polar
3z2-r226.986
x2-y2-13.373
xy12.915
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.566 -2.221 0.000
y -2.221 6.657 0.000
z 0.000 0.000 5.054


<r2> (average value of r2) Å2
<r2> 208.956
(<r2>)1/2 14.455