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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-315.341150
Energy at 298.15K 
HF Energy-315.341150
Nuclear repulsion energy212.620735
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 mPW1PW91/3-21G*
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' 3558 3379 214.48 416.51 0.32 0.48
2 A' 2368 2248 4.18 149.86 0.13 0.22
3 A' 2256 2142 499.28 10.53 0.49 0.65
4 A' 1354 1286 0.70 40.19 0.25 0.40
5 A' 794 754 64.13 14.65 0.68 0.81
6 A' 695 660 507.43 13.40 0.24 0.38
7 A' 673 639 34.93 9.60 0.17 0.29
8 A' 632 600 0.04 0.19 0.17 0.29
9 A' 520 494 85.25 1.77 0.70 0.83
10 A' 187 178 3.09 0.47 0.75 0.86
11 A' 153 145 5.96 8.86 0.73 0.84
12 A" 2357 2238 24.20 139.69 0.75 0.86
13 A" 1234 1172 0.18 4.85 0.75 0.86
14 A" 774 735 112.91 0.47 0.75 0.86
15 A" 673 639 11.39 1.11 0.75 0.86
16 A" 514 489 13.80 5.92 0.75 0.86
17 A" 463 440 1.73 0.13 0.75 0.86
18 A" 149 142 0.49 10.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9675.9 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 9188.2 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 mPW1PW91/3-21G*
ABC
0.09511 0.09343 0.04725

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.001 -0.057 0.000
C2 0.001 1.283 0.000
N3 0.079 2.473 0.000
C4 0.001 -0.759 1.230
C5 0.001 -0.759 -1.230
N6 0.001 -1.341 2.239
N7 0.001 -1.341 -2.239
H8 -0.612 3.220 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.34022.53151.41631.41632.58142.58143.3346
C21.34021.19262.38372.38373.44983.44982.0323
N32.53151.19263.45893.45894.42374.42371.0180
C41.41632.38373.45892.46071.16513.51834.2100
C51.41632.38373.45892.46073.51831.16514.2100
N62.58143.44984.42371.16513.51834.47885.1186
N72.58143.44984.42373.51831.16514.47885.1186
H83.33462.03231.01804.21004.21005.11865.1186

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.258 C1 C4 N6 179.694
C1 C5 N7 179.694 C2 C1 C4 119.690
C2 C1 C5 119.690 C2 N3 H8 133.506
C4 C1 C5 120.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.025      
2 C 0.630      
3 N -0.769      
4 C 0.374      
5 C 0.374      
6 N -0.482      
7 N -0.482      
8 H 0.378      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.509 5.893 0.000 6.084
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -38.058 -5.004 0.000
y -5.004 -32.057 0.000
z 0.000 0.000 -51.720
Traceless
 xyz
x 3.830 -5.004 0.000
y -5.004 12.832 0.000
z 0.000 0.000 -16.662
Polar
3z2-r2-33.324
x2-y2-6.001
xy-5.004
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.653 -0.059 0.000
y -0.059 10.920 0.000
z 0.000 0.000 7.954


<r2> (average value of r2) Å2
<r2> 209.328
(<r2>)1/2 14.468