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

using model chemistry: mPW1PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G**
 hartrees
Energy at 0K-317.095508
Energy at 298.15K 
HF Energy-317.095508
Nuclear repulsion energy212.298613
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**
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' 3595 3421 125.03 412.07 0.31 0.47
2 A' 2391 2275 9.94 198.63 0.13 0.22
3 A' 2201 2094 567.99 9.06 0.35 0.52
4 A' 1363 1297 3.41 43.25 0.22 0.36
5 A' 844 803 466.64 9.53 0.75 0.86
6 A' 667 635 2.93 13.02 0.11 0.19
7 A' 632 601 16.85 6.45 0.71 0.83
8 A' 593 565 0.34 0.13 0.33 0.50
9 A' 443 422 33.89 1.24 0.45 0.62
10 A' 176 167 7.34 0.22 0.71 0.83
11 A' 135 128 8.56 9.51 0.73 0.84
12 A" 2381 2265 27.73 173.92 0.75 0.86
13 A" 1251 1190 1.26 7.41 0.75 0.86
14 A" 742 706 95.29 1.23 0.75 0.86
15 A" 632 601 2.87 1.27 0.75 0.86
16 A" 428 407 9.01 6.78 0.75 0.86
17 A" 392 373 0.49 0.26 0.75 0.86
18 A" 131 125 0.00 10.66 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9497.8 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 9037.2 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**
ABC
0.09410 0.09370 0.04711

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 -0.061 0.000
C2 -0.006 1.280 0.000
N3 0.126 2.474 0.000
C4 -0.006 -0.761 1.242
C5 -0.006 -0.761 -1.242
N6 -0.006 -1.329 2.254
N7 -0.006 -1.329 -2.254
H8 -0.662 3.116 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.34082.53851.42571.42572.58622.58623.2439
C21.34081.20162.38932.38933.44773.44771.9497
N32.53851.20163.46823.46824.42294.42291.0160
C41.42572.38933.46822.48351.16053.54154.1238
C51.42572.38933.46822.48353.54151.16054.1238
N62.58623.44774.42291.16053.54154.50795.0268
N72.58623.44774.42293.54151.16054.50795.0268
H83.24391.94971.01604.12384.12385.02685.0268

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 173.707 C1 C4 N6 179.860
C1 C5 N7 179.860 C2 C1 C4 119.426
C2 C1 C5 119.426 C2 N3 H8 122.879
C4 C1 C5 121.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.030      
2 C 0.512      
3 N -0.605      
4 C 0.364      
5 C 0.364      
6 N -0.469      
7 N -0.469      
8 H 0.334      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.442 5.271 0.000 5.465
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.272 -4.787 0.000
y -4.787 -33.941 0.000
z 0.000 0.000 -51.603
Traceless
 xyz
x 5.500 -4.787 0.000
y -4.787 10.496 0.000
z 0.000 0.000 -15.996
Polar
3z2-r2-31.992
x2-y2-3.331
xy-4.787
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.553 -0.042 0.000
y -0.042 11.691 0.000
z 0.000 0.000 8.934


<r2> (average value of r2) Å2
<r2> 209.844
(<r2>)1/2 14.486