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All results from a given calculation for C(CN)4 (tetracyanomethane)

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 TD 1A1
Energy calculated at B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-409.270696
Energy at 298.15K-409.269496
HF Energy-409.270696
Nuclear repulsion energy324.607590
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 A1 2422 2320 0.00      
2 A1 597 571 0.00      
3 E 579 554 0.00      
3 E 579 554 0.00      
4 E 112 107 0.00      
4 E 112 107 0.00      
5 T1 358 343 0.00      
5 T1 358 343 0.00      
5 T1 358 343 0.00      
6 T2 2415 2312 5.90      
6 T2 2415 2312 5.90      
6 T2 2415 2312 5.90      
7 T2 1095 1049 29.59      
7 T2 1095 1049 29.59      
7 T2 1095 1049 29.59      
8 T2 561 537 0.29      
8 T2 561 537 0.29      
8 T2 561 537 0.29      
9 T2 149 142 13.83      
9 T2 149 142 13.83      
9 T2 149 142 13.83      

Unscaled Zero Point Vibrational Energy (zpe) 9065.6 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 8682.1 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 B1B95/6-31G(2df,p)
ABC
0.05152 0.05152 0.05152

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.852 0.852 0.852
C3 -0.852 -0.852 0.852
C4 -0.852 0.852 -0.852
C5 0.852 -0.852 -0.852
N6 1.516 1.516 1.516
N7 -1.516 -1.516 1.516
N8 -1.516 1.516 -1.516
N9 1.516 -1.516 -1.516

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.47631.47631.47631.47632.62592.62592.62592.6259
C21.47632.41082.41082.41081.14963.41463.41463.4146
C31.47632.41082.41082.41083.41461.14963.41463.4146
C41.47632.41082.41082.41083.41463.41461.14963.4146
C51.47632.41082.41082.41083.41463.41463.41461.1496
N62.62591.14963.41463.41463.41464.28814.28814.2881
N72.62593.41461.14963.41463.41464.28814.28814.2881
N82.62593.41463.41461.14963.41464.28814.28814.2881
N92.62593.41463.41463.41461.14964.28814.28814.2881

picture of tetracyanomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 180.000 C1 C3 N7 180.000
C1 C4 N8 180.000 C1 C5 N9 180.000
C2 C1 C3 109.471 C2 C1 C4 109.471
C2 C1 C5 109.471 C3 C1 C4 109.471
C3 C1 C5 109.471 C4 C1 C5 109.471
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 -0.402      
2 C 0.381      
3 C 0.381      
4 C 0.381      
5 C 0.381      
6 N -0.280      
7 N -0.280      
8 N -0.280      
9 N -0.280      


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 -55.624 0.000 0.000
y 0.000 -55.624 0.000
z 0.000 0.000 -55.624
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.010 0.000 0.000
y 0.000 9.010 0.000
z 0.000 0.000 9.010


<r2> (average value of r2) Å2
<r2> 280.119
(<r2>)1/2 16.737