return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-316.839223
Energy at 298.15K 
HF Energy-316.839223
Nuclear repulsion energy211.170268
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 PBEPBE/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' 3447 3411 77.43 503.68 0.32 0.48
2 A' 2265 2242 3.48 216.15 0.12 0.21
3 A' 2117 2095 428.25 7.17 0.32 0.49
4 A' 1294 1281 3.01 36.60 0.21 0.34
5 A' 836 827 417.51 8.59 0.67 0.80
6 A' 646 639 1.54 17.16 0.09 0.16
7 A' 607 601 7.48 2.90 0.70 0.82
8 A' 568 562 0.18 0.39 0.60 0.75
9 A' 432 428 23.62 1.12 0.39 0.56
10 A' 175 173 6.77 0.21 0.67 0.81
11 A' 129 128 7.99 8.66 0.73 0.84
12 A" 2252 2228 19.27 173.93 0.75 0.86
13 A" 1191 1179 0.51 5.65 0.75 0.86
14 A" 712 704 76.14 1.99 0.75 0.86
15 A" 604 598 2.38 0.33 0.75 0.86
16 A" 416 412 7.74 3.38 0.75 0.86
17 A" 381 377 0.40 0.26 0.75 0.86
18 A" 125 123 0.00 9.91 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9097.6 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 9003.9 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 PBEPBE/6-31G(2df,p)
ABC
0.09303 0.09300 0.04667

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.010 -0.062 0.000
C2 -0.010 1.286 0.000
N3 0.146 2.487 0.000
C4 -0.010 -0.763 1.243
C5 -0.010 -0.763 -1.243
N6 -0.010 -1.339 2.263
N7 -0.010 -1.339 -2.263
H8 -0.638 3.148 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 C4 C5 N6 N7 H8
C11.34822.55371.42721.42722.59862.59863.2713
C21.34821.21072.39662.39663.46613.46611.9653
N32.55371.21073.48273.48274.44794.44791.0255
C41.42722.39663.48272.48681.17153.55374.1518
C51.42722.39663.48272.48683.55371.17154.1518
N62.59863.46614.44791.17153.55374.52645.0650
N72.59863.46614.44793.55371.17154.52645.0650
H83.27131.96531.02554.15184.15185.06505.0650

picture of Dicyanoketenimine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 172.601 C1 C4 N6 179.922
C1 C5 N7 179.922 C2 C1 C4 119.398
C2 C1 C5 119.398 C2 N3 H8 122.787
C4 C1 C5 121.204
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.120      
2 C 0.432      
3 N -0.485      
4 C 0.283      
5 C 0.283      
6 N -0.353      
7 N -0.353      
8 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.239 5.111 0.000 5.259
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.140 -4.265 0.000
y -4.265 -33.723 0.000
z 0.000 0.000 -51.123
Traceless
 xyz
x 5.283 -4.265 0.000
y -4.265 10.409 0.000
z 0.000 0.000 -15.692
Polar
3z2-r2-31.384
x2-y2-3.418
xy-4.265
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.273 -0.056 0.000
y -0.056 12.484 0.000
z 0.000 0.000 9.835


<r2> (average value of r2) Å2
<r2> 211.453
(<r2>)1/2 14.541