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: MP2=FULL/6-311G*

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=FULL/6-311G*
 hartrees
Energy at 0K-446.635141
Energy at 298.15K-446.633331
HF Energy-444.986585
Nuclear repulsion energy373.711796
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=FULL/6-311G*
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 2146 2032 0.00      
2 Ag 1579 1496 0.00      
3 Ag 599 567 0.00      
4 Ag 529 501 0.00      
5 Ag 112 107 0.00      
6 Au 457 433 0.00      
7 Au 78 74 0.00      
8 B1g 374 354 0.00      
9 B1u 2170 2055 53.26      
10 B1u 964 913 10.01      
11 B1u 580 549 0.13      
12 B1u 145 137 13.01      
13 B2g 666 631 0.00      
14 B2g 251 238 0.00      
15 B2u 2164 2050 96.83      
16 B2u 1172 1110 22.53      
17 B2u 428 406 0.06      
18 B2u 101 95 3.13      
19 B3g 2160 2045 0.00      
20 B3g 1304 1235 0.00      
21 B3g 515 488 0.00      
22 B3g 248 235 0.00      
23 B3u 580 549 2.22      
24 B3u 148 141 22.77      

Unscaled Zero Point Vibrational Energy (zpe) 9734.7 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 9219.7 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 MP2=FULL/6-311G*
ABC
0.04970 0.04801 0.02442

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

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 1.220 1.431
C4 0.000 -1.220 1.431
C5 0.000 1.220 -1.431
C6 0.000 -1.220 -1.431
N7 0.000 2.209 2.054
N8 0.000 -2.209 2.054
N9 0.000 2.209 -2.054
N10 0.000 -2.209 -2.054

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.36241.43201.43202.43902.43902.60082.60083.51573.5157
C21.36242.43902.43901.43201.43203.51573.51572.60082.6008
C31.43202.43902.44062.86113.76071.16883.48563.62194.8889
C41.43202.43902.44063.76072.86113.48561.16884.88893.6219
C52.43901.43202.86113.76072.44063.62194.88891.16883.4856
C62.43901.43203.76072.86112.44064.88893.62193.48561.1688
N72.60083.51571.16883.48563.62194.88894.41824.10766.0326
N82.60083.51573.48561.16884.88893.62194.41826.03264.1076
N93.51572.60083.62194.88891.16883.48564.10766.03264.4182
N103.51572.60084.88893.62193.48561.16886.03264.10764.4182

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.552 C1 C2 C6 121.552
C1 C3 N7 179.330 C1 C4 N8 179.330
C2 C1 C3 121.552 C2 C1 C4 121.552
C2 C5 N9 179.330 C2 C6 N10 179.330
C3 C1 C4 116.895 C5 C2 C6 116.895
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability