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All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-446.305630
Energy at 298.15K-446.303759
HF Energy-444.905105
Nuclear repulsion energy372.982393
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 QCISD/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 2337 2200 0.00      
2 Ag 1669 1571 0.00      
3 Ag 602 566 0.00      
4 Ag 533 502 0.00      
5 Ag 116 109 0.00      
6 Au 440 414 0.00      
7 Au 77 72 0.00      
8 B1g 360 339 0.00      
9 B1u 2347 2209 8.31      
10 B1u 968 911 9.83      
11 B1u 581 547 0.90      
12 B1u 144 136 13.56      
13 B2g 623 587 0.00      
14 B2g 247 232 0.00      
15 B2u 2344 2207 39.42      
16 B2u 1171 1103 31.57      
17 B2u 429 404 0.01      
18 B2u 104 98 3.76      
19 B3g 2340 2203 0.00      
20 B3g 1316 1239 0.00      
21 B3g 512 482 0.00      
22 B3g 245 231 0.00      
23 B3u 567 534 1.79      
24 B3u 149 140 27.13      

Unscaled Zero Point Vibrational Energy (zpe) 10109.6 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 9517.2 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 QCISD/6-31G**
ABC
0.04888 0.04815 0.02426

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.679
C2 0.000 0.000 -0.679
C3 0.000 1.230 1.439
C4 0.000 -1.230 1.439
C5 0.000 1.230 -1.439
C6 0.000 -1.230 -1.439
N7 0.000 2.216 2.061
N8 0.000 -2.216 2.061
N9 0.000 2.216 -2.061
N10 0.000 -2.216 -2.061

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.35871.44561.44562.44932.44932.61152.61153.52443.5244
C21.35872.44932.44931.44561.44563.52443.52442.61152.6115
C31.44562.44932.46022.87743.78581.16603.50173.63634.9118
C41.44562.44932.46023.78582.87743.50171.16604.91183.6363
C52.44931.44562.87743.78582.46023.63634.91181.16603.5017
C62.44931.44563.78582.87742.46024.91183.63633.50171.1660
N72.61153.52441.16603.50173.63634.91184.43174.12286.0529
N82.61153.52443.50171.16604.91183.63634.43176.05294.1228
N93.52442.61153.63634.91181.16603.50174.12286.05294.4317
N103.52442.61154.91183.63633.50171.16606.05294.12284.4317

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.689 C1 C2 C6 121.689
C1 C3 N7 179.409 C1 C4 N8 179.409
C2 C1 C3 121.689 C2 C1 C4 121.689
C2 C5 N9 179.409 C2 C6 N10 179.409
C3 C1 C4 116.623 C5 C2 C6 116.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability