return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-447.565683
Energy at 298.15K-447.564029
HF Energy-447.565683
Nuclear repulsion energy375.478099
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 TPSSh/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 2307 2226 0.00      
2 Ag 1563 1508 0.00      
3 Ag 606 585 0.00      
4 Ag 534 515 0.00      
5 Ag 116 112 0.00      
6 Au 477 460 0.00      
7 Au 75 72 0.00      
8 B1g 391 377 0.00      
9 B1u 2334 2252 8.20      
10 B1u 974 940 8.54      
11 B1u 595 575 1.98      
12 B1u 145 140 11.66      
13 B2g 734 708 0.00      
14 B2g 271 261 0.00      
15 B2u 2311 2230 33.64      
16 B2u 1159 1119 28.63      
17 B2u 437 422 0.00      
18 B2u 100 96 3.61      
19 B3g 2307 2226 0.00      
20 B3g 1287 1242 0.00      
21 B3g 523 505 0.00      
22 B3g 253 244 0.00      
23 B3u 602 581 3.09      
24 B3u 154 148 26.63      

Unscaled Zero Point Vibrational Energy (zpe) 10125.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 9771.4 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 TPSSh/6-31G(2df,p)
ABC
0.04930 0.04896 0.02457

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.681
C2 0.000 0.000 -0.681
C3 0.000 1.215 1.436
C4 0.000 -1.215 1.436
C5 0.000 1.215 -1.436
C6 0.000 -1.215 -1.436
N7 0.000 2.190 2.062
N8 0.000 -2.190 2.062
N9 0.000 2.190 -2.062
N10 0.000 -2.190 -2.062

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.36301.43031.43032.44122.44122.58842.58843.51003.5100
C21.36302.44122.44121.43031.43033.51003.51002.58842.5884
C31.43032.44122.43072.87143.76211.15823.46213.63074.8813
C41.43032.44122.43073.76212.87143.46211.15824.88133.6307
C52.44121.43032.87143.76212.43073.63074.88131.15823.4621
C62.44121.43033.76212.87142.43074.88133.63073.46211.1582
N72.58843.51001.15823.46213.63074.88134.37934.12366.0152
N82.58843.51003.46211.15824.88133.63074.37936.01524.1236
N93.51002.58843.63074.88131.15823.46214.12366.01524.3793
N103.51002.58844.88133.63073.46211.15826.01524.12364.3793

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.823 C1 C2 C6 121.823
C1 C3 N7 179.098 C1 C4 N8 179.098
C2 C1 C3 121.823 C2 C1 C4 121.823
C2 C5 N9 179.098 C2 C6 N10 179.098
C3 C1 C4 116.354 C5 C2 C6 116.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability