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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-264.231284
Energy at 298.15K-264.235206
Nuclear repulsion energy179.048159
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 mPW1PW91/6-31G**
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 3099 2948 0.00      
2 Ag 2406 2289 0.00      
3 Ag 1481 1409 0.00      
4 Ag 1398 1330 0.00      
5 Ag 1051 1000 0.00      
6 Ag 986 938 0.00      
7 Ag 523 497 0.00      
8 Ag 225 214 0.00      
9 Au 3163 3010 0.07      
10 Au 1217 1158 0.12      
11 Au 775 738 4.67      
12 Au 413 393 0.10      
13 Au 81 77 21.10      
14 Bg 3145 2993 0.00      
15 Bg 1324 1259 0.00      
16 Bg 1040 989 0.00      
17 Bg 373 355 0.00      
18 Bu 3108 2957 1.93      
19 Bu 2407 2290 10.96      
20 Bu 1486 1414 16.70      
21 Bu 1297 1234 1.44      
22 Bu 956 909 4.70      
23 Bu 535 509 1.39      
24 Bu 132 126 22.33      

Unscaled Zero Point Vibrational Energy (zpe) 16309.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 15518.8 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 mPW1PW91/6-31G**
ABC
0.86009 0.04946 0.04759

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.770 0.000
C2 0.000 -0.770 0.000
C3 -1.360 1.299 0.000
C4 1.360 -1.299 0.000
N5 2.445 -1.704 0.000
N6 -2.445 1.704 0.000
H7 0.527 1.149 0.880
H8 0.527 1.149 -0.880
H9 -0.527 -1.149 0.880
H10 -0.527 -1.149 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.54061.45892.47613.47812.61681.09331.09332.17582.1758
C21.54062.47611.45892.61683.47812.17582.17581.09331.0933
C31.45892.47613.76114.84671.15792.08702.08702.73132.7313
C42.47611.45893.76111.15794.84672.73132.73132.08702.0870
N53.47812.61684.84671.15795.95953.54823.54823.14823.1482
N62.61683.47811.15794.84675.95953.14823.14823.54823.5482
H71.09332.17582.08702.73133.54823.14821.76052.52703.0798
H81.09332.17582.08702.73133.54823.14821.76053.07982.5270
H92.17581.09332.73132.08703.14823.54822.52703.07981.7605
H102.17581.09332.73132.08703.14823.54823.07982.52701.7605

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.251 C1 C2 H9 110.242
C1 C2 H10 110.242 C1 C3 N6 179.208
C2 C1 C3 111.251 C2 C1 H7 110.242
C2 C1 H8 110.242 C2 C4 N5 179.208
C3 C1 H7 108.875 C3 C1 H8 108.875
C4 C2 H9 108.875 C4 C2 H10 108.875
H7 C1 H8 107.252 H9 C2 H10 107.252
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.310      
2 C -0.310      
3 C 0.351      
4 C 0.351      
5 N -0.470      
6 N -0.470      
7 H 0.214      
8 H 0.214      
9 H 0.214      
10 H 0.214      


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 -52.550 12.963 0.000
y 12.963 -39.119 0.000
z 0.000 0.000 -32.357
Traceless
 xyz
x -16.812 12.963 0.000
y 12.963 3.334 0.000
z 0.000 0.000 13.478
Polar
3z2-r226.955
x2-y2-13.431
xy12.963
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> 209.170
(<r2>)1/2 14.463