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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-262.775545
Energy at 298.15K-262.779794
Nuclear repulsion energy178.941563
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 mPW1PW91/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3097 2956 0.00      
2 Ag 2380 2272 0.00      
3 Ag 1530 1460 0.00      
4 Ag 1409 1345 0.00      
5 Ag 1037 990 0.00      
6 Ag 999 954 0.00      
7 Ag 555 530 0.00      
8 Ag 262 250 0.00      
9 Au 3159 3016 0.06      
10 Au 1291 1233 0.07      
11 Au 802 765 5.38      
12 Au 487 465 1.06      
13 Au 87 83 18.23      
14 Bg 3138 2995 0.00      
15 Bg 1373 1310 0.00      
16 Bg 1078 1029 0.00      
17 Bg 448 428 0.00      
18 Bu 3107 2966 1.40      
19 Bu 2382 2274 3.53      
20 Bu 1529 1459 28.46      
21 Bu 1350 1289 6.70      
22 Bu 957 914 5.60      
23 Bu 596 568 5.05      
24 Bu 149 143 17.66      

Unscaled Zero Point Vibrational Energy (zpe) 16598.9 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 15845.3 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 mPW1PW91/3-21G
ABC
0.85213 0.04956 0.04767

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.777 0.000
C2 0.000 -0.777 0.000
C3 -1.359 1.290 0.000
C4 1.359 -1.290 0.000
N5 2.447 -1.698 0.000
N6 -2.447 1.698 0.000
H7 0.529 1.144 0.886
H8 0.529 1.144 -0.886
H9 -0.529 -1.144 0.886
H10 -0.529 -1.144 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.55341.45262.47363.48032.61481.09541.09542.18042.1804
C21.55342.47361.45262.61483.48032.18042.18041.09541.0954
C31.45262.47363.74764.83891.16222.09052.09052.72022.7202
C42.47361.45263.74761.16224.83892.72022.72022.09052.0905
N53.48032.61484.83891.16225.95713.54143.54143.15433.1543
N62.61483.48031.16224.83895.95713.15433.15433.54143.5414
H71.09542.18042.09052.72023.54143.15431.77212.52093.0814
H81.09542.18042.09052.72023.54143.15431.77213.08142.5209
H92.18041.09542.72022.09053.15433.54142.52093.08141.7721
H102.18041.09542.72022.09053.15433.54143.08142.52091.7721

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.706 C1 C2 H9 109.594
C1 C2 H10 109.594 C1 C3 N6 179.832
C2 C1 C3 110.706 C2 C1 H7 109.594
C2 C1 H8 109.594 C2 C4 N5 179.832
C3 C1 H7 109.462 C3 C1 H8 109.462
C4 C2 H9 109.462 C4 C2 H10 109.462
H7 C1 H8 107.974 H9 C2 H10 107.974
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.491      
2 C -0.491      
3 C 0.368      
4 C 0.368      
5 N -0.484      
6 N -0.484      
7 H 0.303      
8 H 0.303      
9 H 0.303      
10 H 0.303      


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 -52.335 12.503 0.000
y 12.503 -39.209 0.000
z 0.000 0.000 -32.687
Traceless
 xyz
x -16.388 12.503 0.000
y 12.503 3.302 0.000
z 0.000 0.000 13.086
Polar
3z2-r226.172
x2-y2-13.126
xy12.503
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> 208.935
(<r2>)1/2 14.455