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All results from a given calculation for HN=C=C(CN)2 (Dicyanoketenimine)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-316.888472
Energy at 298.15K 
HF Energy-316.556076
Nuclear repulsion energy211.223929
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3542 3362 98.42 439.89 0.32 0.48
2 A' 2290 2174 6.06 183.04 0.12 0.22
3 A' 2156 2046 478.23 10.09 0.21 0.35
4 A' 1340 1272 4.01 47.86 0.23 0.38
5 A' 865 821 508.15 12.21 0.72 0.84
6 A' 658 624 1.97 13.21 0.11 0.19
7 A' 601 571 11.52 7.11 0.71 0.83
8 A' 583 553 0.38 0.14 0.31 0.47
9 A' 430 408 28.63 1.45 0.39 0.56
10 A' 172 163 7.16 0.32 0.72 0.84
11 A' 134 127 8.37 9.17 0.73 0.84
12 A" 2286 2170 11.26 162.48 0.75 0.86
13 A" 1232 1169 1.29 7.61 0.75 0.86
14 A" 744 707 97.14 1.68 0.75 0.86
15 A" 624 592 2.05 1.00 0.75 0.86
16 A" 411 391 7.95 6.54 0.75 0.86
17 A" 381 362 0.29 0.25 0.75 0.86
18 A" 131 124 0.01 10.89 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9289.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 8817.8 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 B2PLYP/6-31G*
ABC
0.09316 0.09290 0.04668

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.009 -0.059 0.000
C2 -0.009 1.284 0.000
N3 0.141 2.486 0.000
C4 -0.009 -0.763 1.245
C5 -0.009 -0.763 -1.245
N6 -0.009 -1.338 2.265
N7 -0.009 -1.338 -2.265
H8 -0.642 3.138 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.34362.54931.42991.42992.60072.60073.2595
C21.34361.21072.39622.39623.46463.46461.9590
N32.54931.21073.48253.48254.44614.44611.0195
C41.42992.39623.48252.48911.17073.55604.1439
C51.42992.39623.48252.48913.55601.17074.1439
N62.60073.46464.44611.17073.55604.52975.0559
N72.60073.46464.44613.55601.17074.52975.0559
H83.25951.95901.01954.14394.14395.05595.0559

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 172.874 C1 C4 N6 179.864
C1 C5 N7 179.864 C2 C1 C4 119.500
C2 C1 C5 119.500 C2 N3 H8 122.675
C4 C1 C5 120.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.048      
2 C 0.451      
3 N -0.599      
4 C 0.314      
5 C 0.314      
6 N -0.411      
7 N -0.411      
8 H 0.391      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.442 5.246 0.000 5.440
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.567 -4.806 0.000
y -4.806 -34.241 0.049
z 0.000 0.049 -52.025
Traceless
 xyz
x 5.566 -4.806 0.000
y -4.806 10.555 0.049
z 0.000 0.049 -16.121
Polar
3z2-r2-32.242
x2-y2-3.327
xy-4.806
xz0.000
yz0.049


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.546 0.003 -0.000
y 0.003 11.836 -0.004
z -0.000 -0.004 8.759


<r2> (average value of r2) Å2
<r2> 211.788
(<r2>)1/2 14.553