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: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-407.794394
Energy at 298.15K-407.792988
HF Energy-406.829917
Nuclear repulsion energy313.427603
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 MP2/LANL2DZ
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 2008 1934 0.00      
2 A1 553 532 0.00      
3 E 559 539 0.00      
3 E 559 539 0.00      
4 E 114 109 0.00      
4 E 114 109 0.00      
5 T1 340 328 0.00      
5 T1 340 328 0.00      
5 T1 340 328 0.00      
6 T2 2018 1943 36.73      
6 T2 2018 1943 36.73      
6 T2 2018 1943 36.73      
7 T2 1039 1000 37.52      
7 T2 1039 1000 37.52      
7 T2 1039 1000 37.52      
8 T2 548 528 1.66      
8 T2 548 528 1.66      
8 T2 548 528 1.66      
9 T2 146 140 9.32      
9 T2 146 140 9.32      
9 T2 146 140 9.32      

Unscaled Zero Point Vibrational Energy (zpe) 8087.9 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 7789.4 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 MP2/LANL2DZ
ABC
0.04822 0.04822 0.04822

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.870 0.870 0.870
C3 -0.870 -0.870 0.870
C4 -0.870 0.870 -0.870
C5 0.870 -0.870 -0.870
N6 1.572 1.572 1.572
N7 -1.572 -1.572 1.572
N8 -1.572 1.572 -1.572
N9 1.572 -1.572 -1.572

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.50771.50771.50771.50772.72292.72292.72292.7229
C21.50772.46212.46212.46211.21523.52483.52483.5248
C31.50772.46212.46212.46213.52481.21523.52483.5248
C41.50772.46212.46212.46213.52483.52481.21523.5248
C51.50772.46212.46212.46213.52483.52483.52481.2152
N62.72291.21523.52483.52483.52484.44654.44654.4465
N72.72293.52481.21523.52483.52484.44654.44654.4465
N82.72293.52483.52481.21523.52484.44654.44654.4465
N92.72293.52483.52483.52481.21524.44654.44654.4465

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