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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-263.989906
Energy at 298.15K-263.993674
Nuclear repulsion energy177.445925
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 PBEPBE/cc-pVDZ
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 2992 2975 0.00      
2 Ag 2280 2267 0.00      
3 Ag 1388 1380 0.00      
4 Ag 1318 1310 0.00      
5 Ag 1015 1009 0.00      
6 Ag 950 944 0.00      
7 Ag 503 500 0.00      
8 Ag 216 214 0.00      
9 Au 3053 3035 0.11      
10 Au 1150 1143 0.01      
11 Au 743 739 3.63      
12 Au 393 391 0.09      
13 Au 76 75 17.88      
14 Bg 3034 3016 0.00      
15 Bg 1255 1248 0.00      
16 Bg 980 974 0.00      
17 Bg 353 351 0.00      
18 Bu 3001 2983 2.32      
19 Bu 2282 2269 7.69      
20 Bu 1395 1387 15.19      
21 Bu 1224 1217 2.70      
22 Bu 931 926 1.78      
23 Bu 511 508 2.40      
24 Bu 126 125 17.90      

Unscaled Zero Point Vibrational Energy (zpe) 15583.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 15493.1 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 PBEPBE/cc-pVDZ
ABC
0.84604 0.04865 0.04683

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.423 0.650 0.000
C2 -0.423 -0.650 0.000
C3 -0.423 1.844 0.000
C4 0.423 -1.844 0.000
N5 1.118 -2.790 0.000
N6 -1.118 2.790 0.000
H7 1.083 0.676 0.891
H8 1.083 0.676 -0.891
H9 -1.083 -0.676 0.891
H10 -1.083 -0.676 -0.891

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.55061.46392.49403.50962.63781.10951.10952.19542.1954
C21.55062.49401.46392.63783.50962.19542.19541.10951.1095
C31.46392.49403.78444.88421.17392.10452.10452.75332.7533
C42.49401.46393.78441.17394.88422.75332.75332.10452.1045
N53.50962.63784.88421.17396.01213.57903.57903.18003.1800
N62.63783.50961.17394.88426.01213.18003.18003.57903.5790
H71.10952.19542.10452.75333.57903.18001.78282.55323.1141
H81.10952.19542.10452.75333.57903.18001.78283.11412.5532
H92.19541.10952.75332.10453.18003.57902.55323.11411.7828
H102.19541.10952.75332.10453.18003.57903.11412.55321.7828

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.617 C1 C2 H9 110.138
C1 C2 H10 110.138 C1 C3 N6 179.013
C2 C1 C3 111.617 C2 C1 H7 110.138
C2 C1 H8 110.138 C2 C4 N5 179.013
C3 C1 H7 108.952 C3 C1 H8 108.952
C4 C2 H9 108.952 C4 C2 H10 108.952
H7 C1 H8 106.918 H9 C2 H10 106.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.002      
2 C -0.002      
3 C -0.094      
4 C -0.094      
5 N -0.098      
6 N -0.098      
7 H 0.097      
8 H 0.097      
9 H 0.097      
10 H 0.097      


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 -36.614 10.525 0.000
y 10.525 -54.050 0.000
z 0.000 0.000 -32.745
Traceless
 xyz
x 6.784 10.525 0.000
y 10.525 -19.370 0.000
z 0.000 0.000 12.587
Polar
3z2-r225.173
x2-y217.436
xy10.525
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.743 -2.367 0.000
y -2.367 9.837 0.000
z 0.000 0.000 4.964


<r2> (average value of r2) Å2
<r2> 212.079
(<r2>)1/2 14.563