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All results from a given calculation for C6N4 (Tetracyanoethylene)

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

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)/cc-pVDZ
 hartrees
Energy at 0K-446.387522
Energy at 298.15K-446.385554
HF Energy-444.930901
Nuclear repulsion energy370.371257
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-pVDZ
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 2249 2202        
2 Ag 1598 1564        
3 Ag 590 577        
4 Ag 516 506        
5 Ag 108 106        
6 Au 432 423        
7 Au 74 73        
8 B1g 349 342        
9 B1u 2264 2216        
10 B1u 951 930        
11 B1u 568 556        
12 B1u 137 134        
13 B2g 665 651        
14 B2g 242 237        
15 B2u 2259 2211        
16 B2u 1156 1131        
17 B2u 411 403        
18 B2u 99 97        
19 B3g 2255 2207        
20 B3g 1288 1260        
21 B3g 501 491        
22 B3g 237 232        
23 B3u 554 542        
24 B3u 144 141        

Unscaled Zero Point Vibrational Energy (zpe) 9824.0 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 9615.7 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-pVDZ
ABC
0.04832 0.04742 0.02393

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.689
C2 0.000 0.000 -0.689
C3 0.000 1.240 1.440
C4 0.000 -1.240 1.440
C5 0.000 1.240 -1.440
C6 0.000 -1.240 -1.440
N7 0.000 2.243 2.061
N8 0.000 -2.243 2.061
N9 0.000 2.243 -2.061
N10 0.000 -2.243 -2.061

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.37861.44921.44922.46392.46392.62892.62893.54873.5487
C21.37862.46392.46391.44921.44923.54873.54872.62892.6289
C31.44922.46392.47912.88033.80031.17973.53723.64194.9380
C41.44922.46392.47913.80032.88033.53721.17974.93803.6419
C52.46391.44922.88033.80032.47913.64194.93801.17973.5372
C62.46391.44923.80032.88032.47914.93803.64193.53721.1797
N72.62893.54871.17973.53723.64194.93804.48564.12186.0917
N82.62893.54873.53721.17974.93803.64194.48566.09174.1218
N93.54872.62893.64194.93801.17973.53724.12186.09174.4856
N103.54872.62894.93803.64193.53721.17976.09174.12184.4856

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.204 C1 C2 C6 121.204
C1 C3 N7 179.456 C1 C4 N8 179.456
C2 C1 C3 121.204 C2 C1 C4 121.204
C2 C5 N9 179.456 C2 C6 N10 179.456
C3 C1 C4 117.591 C5 C2 C6 117.591
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability