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

using model chemistry: B2PLYP=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-406.677078
Energy at 298.15K-406.676437
HF Energy-406.344914
Nuclear repulsion energy321.407186
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 B2PLYP=FULL/3-21G
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 2279 2169 0.00      
2 A1 588 560 0.00      
3 E 646 615 0.00      
3 E 646 615 0.00      
4 E 135 129 0.00      
4 E 135 129 0.00      
5 T1 438 417 0.00      
5 T1 438 417 0.00      
5 T1 438 417 0.00      
6 T2 2273 2163 16.41      
6 T2 2273 2163 16.41      
6 T2 2273 2163 16.41      
7 T2 1065 1014 34.22      
7 T2 1065 1014 34.22      
7 T2 1065 1014 34.22      
8 T2 594 566 0.26      
8 T2 594 566 0.26      
8 T2 594 566 0.26      
9 T2 175 167 9.03      
9 T2 175 167 9.03      
9 T2 175 167 9.03      

Unscaled Zero Point Vibrational Energy (zpe) 9030.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 8597.4 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 B2PLYP=FULL/3-21G
ABC
0.05060 0.05060 0.05060

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.856 0.856 0.856
C3 -0.856 -0.856 0.856
C4 -0.856 0.856 -0.856
C5 0.856 -0.856 -0.856
N6 1.532 1.532 1.532
N7 -1.532 -1.532 1.532
N8 -1.532 1.532 -1.532
N9 1.532 -1.532 -1.532

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48181.48181.48181.48182.65342.65342.65342.6534
C21.48182.41972.41972.41971.17163.44343.44343.4434
C31.48182.41972.41972.41973.44341.17163.44343.4434
C41.48182.41972.41972.41973.44343.44341.17163.4434
C51.48182.41972.41972.41973.44343.44343.44341.1716
N62.65341.17163.44343.44343.44344.33304.33304.3330
N72.65343.44341.17163.44343.44344.33304.33304.3330
N82.65343.44343.44341.17163.44344.33304.33304.3330
N92.65343.44343.44343.44341.17164.33304.33304.3330

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