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

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-317.114747
Energy at 298.15K 
HF Energy-317.114747
Nuclear repulsion energy212.993381
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 mPW1PW91/6-31G(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 A' 3586 3424 136.67 379.54 0.31 0.47
2 A' 2385 2277 9.07 206.51 0.11 0.20
3 A' 2195 2096 561.01 7.50 0.36 0.53
4 A' 1354 1293 1.66 40.33 0.21 0.35
5 A' 834 796 448.81 7.30 0.71 0.83
6 A' 665 635 2.21 14.19 0.09 0.16
7 A' 636 607 17.39 3.99 0.68 0.81
8 A' 595 568 0.16 0.23 0.48 0.64
9 A' 460 439 35.50 1.25 0.43 0.60
10 A' 181 173 7.98 0.24 0.71 0.83
11 A' 136 130 9.24 8.07 0.73 0.84
12 A" 2374 2267 28.11 164.19 0.75 0.86
13 A" 1242 1185 0.99 7.47 0.75 0.86
14 A" 745 711 82.49 1.07 0.75 0.86
15 A" 635 606 3.36 0.83 0.75 0.86
16 A" 436 416 8.03 3.88 0.75 0.86
17 A" 402 384 0.59 0.18 0.75 0.86
18 A" 132 126 0.02 9.25 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9495.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 9065.5 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 mPW1PW91/6-31G(2df,p)
ABC
0.09482 0.09418 0.04741

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 -0.062 0.000
C2 -0.006 1.275 0.000
N3 0.125 2.465 0.000
C4 -0.006 -0.759 1.240
C5 -0.006 -0.759 -1.240
N6 -0.006 -1.323 2.248
N7 -0.006 -1.323 -2.248
H8 -0.657 3.111 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.33632.52951.42251.42252.57782.57783.2386
C21.33631.19702.38202.38203.43553.43551.9483
N32.52951.19703.45653.45654.40664.40661.0147
C41.42252.38203.45652.47921.15533.53274.1157
C51.42252.38203.45652.47923.53271.15534.1157
N62.57783.43554.40661.15533.53274.49575.0139
N72.57783.43554.40663.53271.15534.49575.0139
H83.23861.94831.01474.11574.11575.01395.0139

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.740 C1 C4 N6 179.848
C1 C5 N7 179.848 C2 C1 C4 119.375
C2 C1 C5 119.375 C2 N3 H8 123.296
C4 C1 C5 121.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.224      
2 C 0.477      
3 N -0.506      
4 C 0.297      
5 C 0.297      
6 N -0.338      
7 N -0.338      
8 H 0.335      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.315 5.229 0.000 5.392
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.996 -4.460 0.000
y -4.460 -33.835 0.000
z 0.000 0.000 -51.547
Traceless
 xyz
x 5.695 -4.460 0.000
y -4.460 10.437 0.000
z 0.000 0.000 -16.132
Polar
3z2-r2-32.263
x2-y2-3.161
xy-4.460
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.201 -0.060 0.000
y -0.060 11.899 0.000
z 0.000 0.000 9.269


<r2> (average value of r2) Å2
<r2> 208.604
(<r2>)1/2 14.443