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All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: CCSD(T)/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 CCSD(T)/6-31G*
 hartrees
Energy at 0K-446.370889
Energy at 298.15K-446.368784
HF Energy-444.899693
Nuclear repulsion energy372.133224
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)/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 2274 2188        
2 Ag 1605 1544        
3 Ag 593 570        
4 Ag 521 501        
5 Ag 108 103        
6 Au 420 404        
7 Au 73 70        
8 B1g 346 333        
9 B1u 2289 2202        
10 B1u 957 921        
11 B1u 567 545        
12 B1u 137 132        
13 B2g 572 551        
14 B2g 237 228        
15 B2u 2283 2196        
16 B2u 1161 1117        
17 B2u 413 397        
18 B2u 99 95        
19 B3g 2278 2192        
20 B3g 1300 1250        
21 B3g 503 484        
22 B3g 235 226        
23 B3u 542 522        
24 B3u 144 139        

Unscaled Zero Point Vibrational Energy (zpe) 9827.4 cm-1
Scaled (by 0.9621) Zero Point Vibrational Energy (zpe) 9454.9 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)/6-31G*
ABC
0.04880 0.04788 0.02417

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.686
C2 0.000 0.000 -0.686
C3 0.000 1.232 1.434
C4 0.000 -1.232 1.434
C5 0.000 1.232 -1.434
C6 0.000 -1.232 -1.434
N7 0.000 2.233 2.050
N8 0.000 -2.233 2.050
N9 0.000 2.233 -2.050
N10 0.000 -2.233 -2.050

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.37131.44141.44142.45172.45172.61682.61683.53143.5314
C21.37132.45172.45171.44141.44143.53143.53142.61682.6168
C31.44142.45172.46372.86813.78101.17543.51913.62524.9137
C41.44142.45172.46373.78102.86813.51911.17544.91373.6252
C52.45171.44142.86813.78102.46373.62524.91371.17543.5191
C62.45171.44143.78102.86812.46374.91373.62523.51911.1754
N72.61683.53141.17543.51913.62524.91374.46574.10046.0627
N82.61683.53143.51911.17544.91373.62524.46576.06274.1004
N93.53142.61683.62524.91371.17543.51914.10046.06274.4657
N103.53142.61684.91373.62523.51911.17546.06274.10044.4657

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.280 C1 C2 C6 121.280
C1 C3 N7 179.666 C1 C4 N8 179.666
C2 C1 C3 121.280 C2 C1 C4 121.280
C2 C5 N9 179.666 C2 C6 N10 179.666
C3 C1 C4 117.440 C5 C2 C6 117.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability