return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-409.330291
Energy at 298.15K-409.328701
HF Energy-409.330291
Nuclear repulsion energy319.196569
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 BLYP/6-31+G**
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 2273 2261 0.00      
2 A1 558 555 0.00      
3 E 537 534 0.00      
3 E 537 534 0.00      
4 E 106 106 0.00      
4 E 106 106 0.00      
5 T1 320 319 0.00      
5 T1 320 319 0.00      
5 T1 320 319 0.00      
6 T2 2262 2250 9.96      
6 T2 2262 2250 9.96      
6 T2 2262 2250 9.96      
7 T2 1005 1000 39.17      
7 T2 1005 1000 39.17      
7 T2 1005 1000 39.17      
8 T2 525 522 0.07      
8 T2 525 522 0.07      
8 T2 525 522 0.07      
9 T2 140 140 11.27      
9 T2 140 140 11.27      
9 T2 140 140 11.27      

Unscaled Zero Point Vibrational Energy (zpe) 8438.2 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 8393.5 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 BLYP/6-31+G**
ABC
0.04984 0.04984 0.04984

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.865 0.865 0.865
C3 -0.865 -0.865 0.865
C4 -0.865 0.865 -0.865
C5 0.865 -0.865 -0.865
N6 1.542 1.542 1.542
N7 -1.542 -1.542 1.542
N8 -1.542 1.542 -1.542
N9 1.542 -1.542 -1.542

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49911.49911.49911.49912.67072.67072.67072.6707
C21.49912.44802.44802.44801.17173.47123.47123.4712
C31.49912.44802.44802.44803.47121.17173.47123.4712
C41.49912.44802.44802.44803.47123.47121.17173.4712
C51.49912.44802.44802.44803.47123.47123.47121.1717
N62.67071.17173.47123.47123.47124.36134.36134.3613
N72.67073.47121.17173.47123.47124.36134.36134.3613
N82.67073.47123.47121.17173.47124.36134.36134.3613
N92.67073.47123.47123.47121.17174.36134.36134.3613

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 BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.176      
2 C 0.325      
3 C 0.325      
4 C 0.325      
5 C 0.325      
6 N -0.369      
7 N -0.369      
8 N -0.369      
9 N -0.369      


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 -57.924 0.000 0.000
y 0.000 -57.924 0.000
z 0.000 0.000 -57.924
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 10.672 0.000 0.000
y 0.000 10.672 0.000
z 0.000 0.000 10.672


<r2> (average value of r2) Å2
<r2> 289.828
(<r2>)1/2 17.024