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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-43.488844
Energy at 298.15K-43.493029
Nuclear repulsion energy91.030846
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/CEP-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 3278 2955 0.00      
2 Ag 2513 2265 0.00      
3 Ag 1629 1468 0.00      
4 Ag 1535 1384 0.00      
5 Ag 1126 1015 0.00      
6 Ag 1040 937 0.00      
7 Ag 550 496 0.00      
8 Ag 253 228 0.00      
9 Au 3355 3024 21.42      
10 Au 1335 1203 1.27      
11 Au 854 769 2.48      
12 Au 441 398 0.16      
13 Au 84 76 26.04      
14 Bg 3335 3006 0.00      
15 Bg 1436 1295 0.00      
16 Bg 1155 1041 0.00      
17 Bg 402 363 0.00      
18 Bu 3282 2958 22.26      
19 Bu 2515 2267 22.67      
20 Bu 1633 1472 23.68      
21 Bu 1444 1301 0.59      
22 Bu 985 888 38.28      
23 Bu 572 516 4.14      
24 Bu 146 132 25.48      

Unscaled Zero Point Vibrational Energy (zpe) 17448.3 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 15727.9 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 HF/CEP-31G
ABC
0.85040 0.04842 0.04660

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.777 0.000
C2 0.000 -0.777 0.000
C3 -1.393 1.301 0.000
C4 1.393 -1.301 0.000
N5 2.482 -1.702 0.000
N6 -2.482 1.702 0.000
H7 0.514 1.156 0.878
H8 0.514 1.156 -0.878
H9 -0.514 -1.156 0.878
H10 -0.514 -1.156 -0.878

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.55381.48792.50123.50812.64891.08551.08552.18442.1844
C21.55382.50121.48792.64893.50812.18442.18441.08551.0855
C31.48792.50123.81124.90221.16102.10382.10382.75312.7531
C42.50121.48793.81121.16104.90222.75312.75312.10382.1038
N53.50812.64894.90221.16106.01943.57983.57983.16923.1692
N62.64893.50811.16104.90226.01943.16923.16923.57983.5798
H71.08552.18442.10382.75313.57983.16921.75522.53083.0798
H81.08552.18442.10382.75313.57983.16921.75523.07982.5308
H92.18441.08552.75312.10383.16923.57982.53083.07981.7552
H102.18441.08552.75312.10383.16923.57983.07982.53081.7552

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 110.614 C1 C2 H9 110.460
C1 C2 H10 110.460 C1 C3 N6 179.623
C2 C1 C3 110.614 C2 C1 H7 110.460
C2 C1 H8 110.460 C2 C4 N5 179.623
C3 C1 H7 108.668 C3 C1 H8 108.668
C4 C2 H9 108.668 C4 C2 H10 108.668
H7 C1 H8 107.895 H9 C2 H10 107.895
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.128      
2 C -0.128      
3 C -0.564      
4 C -0.564      
5 N 0.371      
6 N 0.371      
7 H 0.161      
8 H 0.161      
9 H 0.161      
10 H 0.161      


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 -57.795 14.976 0.000
y 14.976 -41.366 0.000
z 0.000 0.000 -33.486
Traceless
 xyz
x -20.369 14.976 0.000
y 14.976 4.274 0.000
z 0.000 0.000 16.095
Polar
3z2-r232.189
x2-y2-16.429
xy14.976
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.037 -2.058 0.000
y -2.058 5.936 0.000
z 0.000 0.000 4.436


<r2> (average value of r2) Å2
<r2> 161.563
(<r2>)1/2 12.711