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

using model chemistry: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-408.730829
Energy at 298.15K-408.729408
HF Energy-407.156310
Nuclear repulsion energy322.066270
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 CCSD(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2299 2241        
2 A1 581 567        
3 E 559 545        
3 E 559 545        
4 E 106 104        
4 E 104 102        
5 T1 322 314        
5 T1 322 314        
5 T1 322 314        
6 T2 2295 2237        
6 T2 2295 2237        
6 T2 2295 2237        
7 T2 1078 1051        
7 T2 1078 1051        
7 T2 1078 1051        
8 T2 546 533        
8 T2 546 533        
8 T2 546 532        
9 T2 143 139        
9 T2 143 139        
9 T2 142 138        

Unscaled Zero Point Vibrational Energy (zpe) 8679.2 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 8460.5 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 CCSD(T)/cc-pVTZ
ABC
0.05073 0.05073 0.05073

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.858 0.858 0.858
C3 -0.858 -0.858 0.858
C4 -0.858 0.858 -0.858
C5 0.858 -0.858 -0.858
N6 1.528 1.528 1.528
N7 -1.528 -1.528 1.528
N8 -1.528 1.528 -1.528
N9 1.528 -1.528 -1.528

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48571.48571.48571.48572.64712.64712.64712.6471
C21.48572.42622.42622.42621.16143.44043.44043.4404
C31.48572.42622.42622.42623.44041.16143.44043.4404
C41.48572.42622.42622.42623.44043.44041.16143.4404
C51.48572.42622.42622.42623.44043.44043.44041.1614
N62.64711.16143.44043.44043.44044.32274.32274.3227
N72.64713.44041.16143.44043.44044.32274.32274.3227
N82.64713.44043.44041.16143.44044.32274.32274.3227
N92.64713.44043.44043.44041.16144.32274.32274.3227

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