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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-264.244663
Energy at 298.15K-264.248594
Nuclear repulsion energy178.887397
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/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 3090 2962 0.00      
2 Ag 2398 2298 0.00      
3 Ag 1447 1387 0.00      
4 Ag 1384 1326 0.00      
5 Ag 1058 1014 0.00      
6 Ag 985 944 0.00      
7 Ag 524 502 0.00      
8 Ag 227 217 0.00      
9 Au 3156 3025 0.00      
10 Au 1199 1149 0.01      
11 Au 770 738 4.00      
12 Au 411 394 0.00      
13 Au 81 77 19.70      
14 Bg 3138 3007 0.00      
15 Bg 1307 1252 0.00      
16 Bg 1024 981 0.00      
17 Bg 371 355 0.00      
18 Bu 3098 2969 1.60      
19 Bu 2399 2299 11.95      
20 Bu 1453 1392 16.47      
21 Bu 1275 1222 2.88      
22 Bu 960 920 4.18      
23 Bu 534 511 1.32      
24 Bu 132 127 20.40      

Unscaled Zero Point Vibrational Energy (zpe) 16209.1 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 15533.2 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/cc-pVDZ
ABC
0.85928 0.04939 0.04754

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.769 0.000
C2 0.000 -0.769 0.000
C3 -1.358 1.302 0.000
C4 1.358 -1.302 0.000
N5 2.444 -1.709 0.000
N6 -2.444 1.709 0.000
H7 0.529 1.151 0.885
H8 0.529 1.151 -0.885
H9 -0.529 -1.151 0.885
H10 -0.529 -1.151 -0.885

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.53811.45922.47673.48002.61811.09951.09952.17952.1795
C21.53812.47671.45922.61813.48002.17952.17951.09951.0995
C31.45922.47673.76314.84971.15892.09022.09022.73642.7364
C42.47671.45923.76311.15894.84972.73642.73642.09022.0902
N53.48002.61814.84971.15895.96353.55343.55343.15143.1514
N62.61813.48001.15894.84975.96353.15143.15143.55343.5534
H71.09952.17952.09022.73643.55343.15141.76982.53383.0907
H81.09952.17952.09022.73643.55343.15141.76983.09072.5338
H92.17951.09952.73642.09023.15143.55342.53383.09071.7698
H102.17951.09952.73642.09023.15143.55343.09072.53381.7698

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.413 C1 C2 H9 110.332
C1 C2 H10 110.332 C1 C3 N6 179.135
C2 C1 C3 111.413 C2 C1 H7 110.332
C2 C1 H8 110.332 C2 C4 N5 179.135
C3 C1 H7 108.732 C3 C1 H8 108.732
C4 C2 H9 108.732 C4 C2 H10 108.732
H7 C1 H8 107.182 H9 C2 H10 107.182
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.019      
2 C -0.019      
3 C -0.077      
4 C -0.077      
5 N -0.125      
6 N -0.125      
7 H 0.111      
8 H 0.111      
9 H 0.111      
10 H 0.111      


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 -52.004 12.585 0.000
y 12.585 -39.238 0.000
z 0.000 0.000 -32.583
Traceless
 xyz
x -16.094 12.585 0.000
y 12.585 3.055 0.000
z 0.000 0.000 13.038
Polar
3z2-r226.076
x2-y2-12.766
xy12.585
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> 209.386
(<r2>)1/2 14.470