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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-264.293283
Energy at 298.15K-264.297236
Nuclear repulsion energy179.637820
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 mPW1PW91/6-311G**
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 3083 2950 0.00      
2 Ag 2394 2291 0.00      
3 Ag 1471 1408 0.00      
4 Ag 1391 1331 0.00      
5 Ag 1048 1003 0.00      
6 Ag 985 942 0.00      
7 Ag 526 504 0.00      
8 Ag 228 218 0.00      
9 Au 3143 3007 0.19      
10 Au 1216 1164 0.04      
11 Au 772 739 3.92      
12 Au 413 395 0.02      
13 Au 80 77 21.49      
14 Bg 3124 2988 0.00      
15 Bg 1322 1264 0.00      
16 Bg 1036 991 0.00      
17 Bg 374 358 0.00      
18 Bu 3092 2958 1.99      
19 Bu 2396 2292 11.55      
20 Bu 1478 1414 18.61      
21 Bu 1294 1238 1.46      
22 Bu 954 912 4.35      
23 Bu 541 517 1.26      
24 Bu 133 127 22.43      

Unscaled Zero Point Vibrational Energy (zpe) 16246.4 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 15542.9 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 mPW1PW91/6-311G**
ABC
0.86277 0.04978 0.04790

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.422 0.644 0.000
C2 -0.422 -0.644 0.000
C3 -0.422 1.829 0.000
C4 0.422 -1.829 0.000
N5 1.103 -2.756 0.000
N6 -1.103 2.756 0.000
H7 1.069 0.671 0.879
H8 1.069 0.671 -0.879
H9 -1.069 -0.671 0.879
H10 -1.069 -0.671 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.53901.45492.47243.46702.60541.09211.09212.17362.1736
C21.53902.47241.45492.60543.46702.17362.17361.09211.0921
C31.45492.47243.75374.83171.15062.08212.08212.72822.7282
C42.47241.45493.75371.15064.83172.72822.72822.08212.0821
N53.46702.60544.83171.15065.93713.53843.53843.13643.1364
N62.60543.46701.15064.83175.93713.13643.13643.53843.5384
H71.09212.17362.08212.72823.53843.13641.75892.52433.0767
H81.09212.17362.08212.72823.53843.13641.75893.07672.5243
H92.17361.09212.72822.08213.13643.53842.52433.07671.7589
H102.17361.09212.72822.08213.13643.53843.07672.52431.7589

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.313 C1 C2 H9 110.245
C1 C2 H10 110.245 C1 C3 N6 179.117
C2 C1 C3 111.313 C2 C1 H7 110.245
C2 C1 H8 110.245 C2 C4 N5 179.117
C3 C1 H7 108.829 C3 C1 H8 108.829
C4 C2 H9 108.829 C4 C2 H10 108.829
H7 C1 H8 107.273 H9 C2 H10 107.273
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.212      
2 C -0.212      
3 C 0.079      
4 C 0.079      
5 N -0.262      
6 N -0.262      
7 H 0.197      
8 H 0.197      
9 H 0.197      
10 H 0.197      


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 -37.074 11.414 0.000
y 11.414 -55.688 0.000
z 0.000 0.000 -32.748
Traceless
 xyz
x 7.144 11.414 0.000
y 11.414 -20.777 0.000
z 0.000 0.000 13.633
Polar
3z2-r227.266
x2-y218.614
xy11.414
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.646 -2.267 0.000
y -2.267 9.503 0.000
z 0.000 0.000 4.910


<r2> (average value of r2) Å2
<r2> 208.344
(<r2>)1/2 14.434