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All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-446.534727
Energy at 298.15K-446.532945
HF Energy-444.930234
Nuclear repulsion energy374.534146
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 MP2/6-31G(2df,p)
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 2156 2037 0.00      
2 Ag 1579 1491 0.00      
3 Ag 598 564 0.00      
4 Ag 528 498 0.00      
5 Ag 111 105 0.00      
6 Au 461 435 0.00      
7 Au 79 75 0.00      
8 B1g 374 353 0.00      
9 B1u 2181 2060 44.06      
10 B1u 962 908 7.24      
11 B1u 580 548 0.57      
12 B1u 142 135 15.41      
13 B2g 716 676 0.00      
14 B2g 258 244 0.00      
15 B2u 2173 2052 88.88      
16 B2u 1174 1109 21.15      
17 B2u 424 400 0.01      
18 B2u 99 93 3.47      
19 B3g 2168 2048 0.00      
20 B3g 1298 1226 0.00      
21 B3g 514 486 0.00      
22 B3g 244 231 0.00      
23 B3u 584 552 3.29      
24 B3u 150 141 27.46      

Unscaled Zero Point Vibrational Energy (zpe) 9774.9 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 9232.4 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 MP2/6-31G(2df,p)
ABC
0.05029 0.04797 0.02455

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.678
C2 0.000 0.000 -0.678
C3 0.000 1.218 1.425
C4 0.000 -1.218 1.425
C5 0.000 1.218 -1.425
C6 0.000 -1.218 -1.425
N7 0.000 2.209 2.045
N8 0.000 -2.209 2.045
N9 0.000 2.209 -2.045
N10 0.000 -2.209 -2.045

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.35691.42851.42852.43042.43042.59762.59763.50673.5067
C21.35692.43042.43041.42851.42853.50673.50672.59762.5976
C31.42852.43042.43632.84933.74891.16913.48303.60834.8769
C41.42852.43042.43633.74892.84933.48301.16914.87693.6083
C52.43041.42852.84933.74892.43633.60834.87691.16913.4830
C62.43041.42853.74892.84932.43634.87693.60833.48301.1691
N72.59763.50671.16913.48303.60834.87694.41834.08986.0206
N82.59763.50673.48301.16914.87693.60834.41836.02064.0898
N93.50672.59763.60834.87691.16913.48304.08986.02064.4183
N103.50672.59764.87693.60833.48301.16916.02064.08984.4183

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.490 C1 C2 C6 121.490
C1 C3 N7 179.447 C1 C4 N8 179.447
C2 C1 C3 121.490 C2 C1 C4 121.490
C2 C5 N9 179.447 C2 C6 N10 179.447
C3 C1 C4 117.021 C5 C2 C6 117.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability