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All results from a given calculation for C6N4 (Tetracyanoethylene)

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

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/6-31+G**
 hartrees
Energy at 0K-446.325457
Energy at 298.15K-446.322988
HF Energy-444.913756
Nuclear repulsion energy372.771322
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/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2338 2210 6.64      
2 A' 2335 2207 39.08      
3 A' 2331 2204 0.00      
4 A' 2327 2200 0.00      
5 A' 1664 1573 0.00      
6 A' 1309 1238 0.00      
7 A' 1166 1103 33.26      
8 A' 961 909 12.33      
9 A' 599 567 0.00      
10 A' 570 539 0.38      
11 A' 531 502 0.00      
12 A' 506 478 0.00      
13 A' 425 402 0.03      
14 A' 239 226 0.00      
15 A' 144 136 13.00      
16 A' 116 110 0.00      
17 A' 103 97 3.67      
18 A" 521 492 0.33      
19 A" 392 371 0.00      
20 A" 342 323 0.00      
21 A" 298 282 0.00      
22 A" 145 137 25.93      
23 A" 121 114 0.00      
24 A" 75 70 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 9778.3 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 9244.4 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/6-31+G**
ABC
0.04875 0.04815 0.02422

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.680 0.000
C2 -0.000 -0.680 0.000
C3 -1.230 1.441 0.000
C4 1.230 1.441 0.000
C5 -1.230 -1.441 0.000
C6 1.230 -1.441 0.000
N7 -2.217 2.062 0.000
N8 2.217 2.062 0.000
N9 -2.217 -2.062 0.000
N10 2.217 -2.062 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.35981.44621.44622.45142.45142.61242.61243.52613.5261
C21.35982.45142.45141.44621.44623.52613.52612.61242.6124
C31.44622.45142.45992.88123.78851.16623.50223.63924.9142
C41.44622.45142.45993.78852.88123.50221.16624.91423.6392
C52.45141.44622.88123.78852.45993.63924.91421.16623.5022
C62.45141.44623.78852.88122.45994.91423.63923.50221.1662
N72.61243.52611.16623.50223.63924.91424.43324.12476.0553
N82.61243.52613.50221.16624.91423.63924.43326.05534.1247
N93.52612.61243.63924.91421.16623.50224.12476.05534.4332
N103.52612.61244.91423.63923.50221.16626.05534.12474.4332

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.737 C1 C2 C6 121.736
C1 C3 N7 179.520 C1 C4 N8 179.519
C2 C1 C3 121.736 C2 C1 C4 121.736
C2 C5 N9 179.519 C2 C6 N10 179.520
C3 C1 C4 116.527 C5 C2 C6 116.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability