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All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: QCISD(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 QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-446.390033
Energy at 298.15K-446.388063
HF Energy-444.930351
Nuclear repulsion energy370.258899
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(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 2244 2139        
2 Ag 1597 1522        
3 Ag 589 561        
4 Ag 516 492        
5 Ag 108 103        
6 Au 432 412        
7 Au 75 71        
8 B1g 349 333        
9 B1u 2259 2153        
10 B1u 949 904        
11 B1u 568 541        
12 B1u 136 130        
13 B2g 665 634        
14 B2g 242 231        
15 B2u 2254 2148        
16 B2u 1154 1100        
17 B2u 411 392        
18 B2u 99 95        
19 B3g 2249 2144        
20 B3g 1285 1225        
21 B3g 501 477        
22 B3g 237 226        
23 B3u 554 528        
24 B3u 144 137        

Unscaled Zero Point Vibrational Energy (zpe) 9808.4 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 9348.4 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 QCISD(T)/cc-pVDZ
ABC
0.04829 0.04739 0.02392

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 2.062
N8 0.000 -2.243 2.062
N9 0.000 2.243 -2.062
N10 0.000 -2.243 -2.062

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.37871.44961.44962.46432.46432.62992.62993.54983.5498
C21.37872.46432.46431.44961.44963.54983.54982.62992.6299
C31.44962.46432.47962.88083.80101.18033.53823.64304.9394
C41.44962.46432.47963.80102.88083.53821.18034.93943.6430
C52.46431.44962.88083.80102.47963.64304.93941.18033.5382
C62.46431.44963.80102.88082.47964.93943.64303.53821.1803
N72.62993.54981.18033.53823.64304.93944.48684.12336.0937
N82.62993.54983.53821.18034.93943.64304.48686.09374.1233
N93.54982.62993.64304.93941.18033.53824.12336.09374.4868
N103.54982.62994.93943.64303.53821.18036.09374.12334.4868

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.206 C1 C2 C6 121.206
C1 C3 N7 179.448 C1 C4 N8 179.448
C2 C1 C3 121.206 C2 C1 C4 121.206
C2 C5 N9 179.448 C2 C6 N10 179.448
C3 C1 C4 117.588 C5 C2 C6 117.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability