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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: HF/6-31G

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/6-31G
 hartrees
Energy at 0K-262.563985
Energy at 298.15K-262.568176
Nuclear repulsion energy179.628238
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/6-31G
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 3229 2915 0.00      
2 Ag 2559 2310 0.00      
3 Ag 1639 1479 0.00      
4 Ag 1538 1389 0.00      
5 Ag 1108 1001 0.00      
6 Ag 1051 949 0.00      
7 Ag 555 501 0.00      
8 Ag 249 225 0.00      
9 Au 3292 2973 2.43      
10 Au 1356 1225 0.06      
11 Au 864 781 3.02      
12 Au 438 396 0.04      
13 Au 84 75 24.39      
14 Bg 3271 2953 0.00      
15 Bg 1452 1311 0.00      
16 Bg 1180 1066 0.00      
17 Bg 396 358 0.00      
18 Bu 3236 2922 5.67      
19 Bu 2560 2312 20.10      
20 Bu 1641 1482 21.94      
21 Bu 1464 1322 0.93      
22 Bu 994 898 27.44      
23 Bu 575 519 3.24      
24 Bu 146 132 24.20      

Unscaled Zero Point Vibrational Energy (zpe) 17439.3 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 15745.9 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/6-31G
ABC
0.86586 0.04961 0.04774

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.772 0.000
C2 0.000 -0.772 0.000
C3 -1.364 1.299 0.000
C4 1.364 -1.299 0.000
N5 2.437 -1.701 0.000
N6 -2.437 1.701 0.000
H7 0.522 1.144 0.872
H8 0.522 1.144 -0.872
H9 -0.522 -1.144 0.872
H10 -0.522 -1.144 -0.872

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.54341.46212.47953.47172.60811.08261.08262.16892.1689
C21.54342.47951.46212.60813.47172.16892.16891.08261.0826
C31.46212.47953.76694.84201.14612.08342.08342.72762.7276
C42.47951.46213.76691.14614.84202.72762.72762.08342.0834
N53.47172.60814.84201.14615.94373.53873.53873.13473.1347
N62.60813.47171.14614.84205.94373.13473.13473.53873.5387
H71.08262.16892.08342.72763.53873.13471.74412.51573.0611
H81.08262.16892.08342.72763.53873.13471.74413.06112.5157
H92.16891.08262.72762.08343.13473.53872.51573.06111.7441
H102.16891.08262.72762.08343.13473.53873.06112.51571.7441

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.153 C1 C2 H9 110.135
C1 C2 H10 110.135 C1 C3 N6 179.362
C2 C1 C3 111.153 C2 C1 H7 110.135
C2 C1 H8 110.135 C2 C4 N5 179.362
C3 C1 H7 109.003 C3 C1 H8 109.003
C4 C2 H9 109.003 C4 C2 H10 109.003
H7 C1 H8 107.320 H9 C2 H10 107.320
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.314 -0.035    
2 C -0.314 -0.035    
3 C 0.115 0.396    
4 C 0.115 0.396    
5 N -0.295 -0.501    
6 N -0.295 -0.501    
7 H 0.247 0.070    
8 H 0.247 0.070    
9 H 0.247 0.070    
10 H 0.247 0.070    


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 0.000 0.000 0.000 0.000
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -56.096 14.347 0.000
y 14.347 -40.864 0.000
z 0.000 0.000 -33.377
Traceless
 xyz
x -18.975 14.347 0.000
y 14.347 3.872 0.000
z 0.000 0.000 15.103
Polar
3z2-r230.206
x2-y2-15.232
xy14.347
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.777 -2.072 0.000
y -2.072 5.604 0.000
z 0.000 0.000 4.294


<r2> (average value of r2) Å2
<r2> 209.865
(<r2>)1/2 14.487