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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-262.746559
Energy at 298.15K-262.750777
Nuclear repulsion energy180.426103
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 HF/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 3239 2929 0.00      
2 Ag 2604 2355 0.00      
3 Ag 1610 1456 0.00      
4 Ag 1536 1389 0.00      
5 Ag 1107 1001 0.00      
6 Ag 1034 935 0.00      
7 Ag 562 508 0.00      
8 Ag 251 227 0.00      
9 Au 3296 2981 5.99      
10 Au 1332 1204 0.01      
11 Au 835 755 2.72      
12 Au 451 408 0.65      
13 Au 87 78 24.56      
14 Bg 3276 2963 0.00      
15 Bg 1443 1305 0.00      
16 Bg 1146 1036 0.00      
17 Bg 411 371 0.00      
18 Bu 3245 2935 8.26      
19 Bu 2605 2356 17.64      
20 Bu 1618 1463 13.66      
21 Bu 1420 1285 2.91      
22 Bu 975 882 20.14      
23 Bu 588 532 0.23      
24 Bu 146 132 26.87      

Unscaled Zero Point Vibrational Energy (zpe) 17406.1 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 15742.1 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 HF/6-311G*
ABC
0.86691 0.05000 0.04810

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.768 0.000
C2 0.000 -0.768 0.000
C3 -1.372 1.292 0.000
C4 1.372 -1.292 0.000
N5 2.432 -1.680 0.000
N6 -2.432 1.680 0.000
H7 0.514 1.149 0.873
H8 0.514 1.149 -0.873
H9 -0.514 -1.149 0.873
H10 -0.514 -1.149 -0.873

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.53691.46862.47543.45092.59721.08191.08192.16872.1687
C21.53692.47541.46862.59723.45092.16872.16871.08191.0819
C31.46862.47543.76924.82731.12872.08302.08302.73082.7308
C42.47541.46863.76921.12874.82732.73082.73082.08302.0830
N53.45092.59724.82731.12875.91153.52763.52763.11793.1179
N62.59723.45091.12874.82735.91153.11793.11793.52763.5276
H71.08192.16872.08302.73083.52763.11791.74542.51773.0636
H81.08192.16872.08302.73083.52763.11791.74543.06362.5177
H92.16871.08192.73082.08303.11793.52762.51773.06361.7454
H102.16871.08192.73082.08303.11793.52763.06362.51771.7454

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.879 C1 C2 H9 110.604
C1 C2 H10 110.604 C1 C3 N6 179.219
C2 C1 C3 110.879 C2 C1 H7 110.604
C2 C1 H8 110.604 C2 C4 N5 179.219
C3 C1 H7 108.560 C3 C1 H8 108.560
C4 C2 H9 108.560 C4 C2 H10 108.560
H7 C1 H8 107.534 H9 C2 H10 107.534
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.425 0.041   -0.085
2 C -0.425 0.041   -0.062
3 C 0.165 0.315   0.326
4 C 0.165 0.315   0.319
5 N -0.317 -0.467   -0.458
6 N -0.317 -0.467   -0.460
7 H 0.289 0.056   0.107
8 H 0.289 0.056   0.107
9 H 0.289 0.056   0.102
10 H 0.289 0.056   0.102


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 0.000 -0.003 0.000 0.003


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -55.008 13.707 0.000
y 13.707 -40.379 0.000
z 0.000 0.000 -33.198
Traceless
 xyz
x -18.220 13.707 0.000
y 13.707 3.724 0.000
z 0.000 0.000 14.496
Polar
3z2-r228.992
x2-y2-14.629
xy13.707
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.886 -1.897 0.000
y -1.897 6.057 0.000
z 0.000 0.000 4.701


<r2> (average value of r2) Å2
<r2> 208.173
(<r2>)1/2 14.428