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All results from a given calculation for C4H4N2 (Succinonitrile)

using model chemistry: B1B95/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-264.206607
Energy at 298.15K-264.210516
Nuclear repulsion energy179.529194
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 B1B95/6-31G(2df,p)
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 3083 2953 0.00      
2 Ag 2388 2287 0.00      
3 Ag 1458 1396 0.00      
4 Ag 1372 1314 0.00      
5 Ag 1044 1000 0.00      
6 Ag 975 934 0.00      
7 Ag 524 502 0.00      
8 Ag 225 215 0.00      
9 Au 3147 3014 0.07      
10 Au 1198 1147 0.09      
11 Au 763 731 3.93      
12 Au 415 397 0.39      
13 Au 77 74 20.94      
14 Bg 3128 2995 0.00      
15 Bg 1305 1250 0.00      
16 Bg 1027 983 0.00      
17 Bg 376 360 0.00      
18 Bu 3093 2962 1.72      
19 Bu 2389 2288 10.61      
20 Bu 1466 1404 14.11      
21 Bu 1276 1222 2.54      
22 Bu 950 910 3.21      
23 Bu 535 512 0.68      
24 Bu 129 124 22.42      

Unscaled Zero Point Vibrational Energy (zpe) 16170.5 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 15486.5 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 B1B95/6-31G(2df,p)
ABC
0.86023 0.04977 0.04788

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.422 0.643 0.000
C2 -0.422 -0.643 0.000
C3 -0.422 1.828 0.000
C4 0.422 -1.828 0.000
N5 1.108 -2.755 0.000
N6 -1.108 2.755 0.000
H7 1.071 0.667 0.879
H8 1.071 0.667 -0.879
H9 -1.071 -0.667 0.879
H10 -1.071 -0.667 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C11.53891.45492.47063.46672.60841.09241.09242.17222.1722
C21.53892.47061.45492.60843.46672.17222.17221.09241.0924
C31.45492.47063.75144.83151.15362.08542.08542.72312.7231
C42.47061.45493.75141.15364.83152.72312.72312.08542.0854
N53.46672.60844.83151.15365.93933.53343.53343.14343.1434
N62.60843.46671.15364.83155.93933.14343.14343.53343.5334
H71.09242.17222.08542.72313.53343.14341.75762.52313.0750
H81.09242.17222.08542.72313.53343.14341.75763.07502.5231
H92.17221.09242.72312.08543.14343.53342.52313.07501.7576
H102.17221.09242.72312.08543.14343.53343.07502.52311.7576

picture of Succinonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 111.196 C1 C2 H9 110.133
C1 C2 H10 110.133 C1 C3 N6 179.025
C2 C1 C3 111.196 C2 C1 H7 110.133
C2 C1 H8 110.133 C2 C4 N5 179.025
C3 C1 H7 109.078 C3 C1 H8 109.078
C4 C2 H9 109.078 C4 C2 H10 109.078
H7 C1 H8 107.125 H9 C2 H10 107.125
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.362      
2 C -0.362      
3 C 0.278      
4 C 0.278      
5 N -0.302      
6 N -0.302      
7 H 0.193      
8 H 0.193      
9 H 0.193      
10 H 0.193      


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 -36.493 11.196 0.000
y 11.196 -54.569 0.000
z 0.000 0.000 -32.184
Traceless
 xyz
x 6.884 11.196 0.000
y 11.196 -20.231 0.000
z 0.000 0.000 13.347
Polar
3z2-r226.694
x2-y218.077
xy11.196
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.631 -2.207 0.000
y -2.207 9.506 0.000
z 0.000 0.000 5.031


<r2> (average value of r2) Å2
<r2> 207.903
(<r2>)1/2 14.419