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All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: MP2/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-72.845935
Energy at 298.15K-72.843760
HF Energy-71.493989
Nuclear repulsion energy171.508099
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/CEP-31G*
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 2117 2010 0.00      
2 Ag 1590 1510 0.00      
3 Ag 584 555 0.00      
4 Ag 509 483 0.00      
5 Ag 103 98 0.00      
6 Au 432 410 0.00      
7 Au 78 75 0.00      
8 B1g 348 330 0.00      
9 B1u 2141 2032 42.95      
10 B1u 939 892 14.42      
11 B1u 548 520 0.45      
12 B1u 131 125 11.86      
13 B2g 585 555 0.00      
14 B2g 232 220 0.00      
15 B2u 2138 2030 82.87      
16 B2u 1167 1108 24.81      
17 B2u 397 376 0.47      
18 B2u 93 88 2.74      
19 B3g 2133 2025 0.00      
20 B3g 1287 1222 0.00      
21 B3g 489 464 0.00      
22 B3g 227 216 0.00      
23 B3u 551 523 0.55      
24 B3u 144 137 20.15      

Unscaled Zero Point Vibrational Energy (zpe) 9481.6 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 9001.9 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/CEP-31G*
ABC
0.04830 0.04602 0.02357

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.694
C2 0.000 0.000 -0.694
C3 0.000 1.239 1.456
C4 0.000 -1.239 1.456
C5 0.000 1.239 -1.456
C6 0.000 -1.239 -1.456
N7 0.000 2.248 2.090
N8 0.000 -2.248 2.090
N9 0.000 2.248 -2.090
N10 0.000 -2.248 -2.090

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.38811.45441.45442.48152.48152.64672.64673.57883.5788
C21.38812.48152.48151.45441.45443.57883.57882.64672.6467
C31.45442.48152.47742.91243.82351.19233.54433.68744.9737
C41.45442.48152.47743.82352.91243.54431.19234.97373.6874
C52.48151.45442.91243.82352.47743.68744.97371.19233.5443
C62.48151.45443.82352.91242.47744.97373.68743.54431.1923
N72.64673.57881.19233.54433.68744.97374.49684.18066.1400
N82.64673.57883.54431.19234.97373.68744.49686.14004.1806
N93.57882.64673.68744.97371.19233.54434.18066.14004.4968
N103.57882.64674.97373.68743.54431.19236.14004.18064.4968

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.603 C1 C2 C6 121.603
C1 C3 N7 179.474 C1 C4 N8 179.474
C2 C1 C3 121.603 C2 C1 C4 121.603
C2 C5 N9 179.474 C2 C6 N10 179.474
C3 C1 C4 116.794 C5 C2 C6 116.794
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability