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 CH3NNCH3 ((Z)-1,2-Dimethyldiazene)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-189.201321
Energy at 298.15K-189.208715
HF Energy-189.201321
Nuclear repulsion energy122.577535
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 B3PW91/6-31G(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 A1 3159 3037 0.79      
2 A1 3022 2906 12.10      
3 A1 1685 1620 11.65      
4 A1 1467 1410 0.44      
5 A1 1390 1337 20.12      
6 A1 1093 1051 3.91      
7 A1 888 854 0.08      
8 A1 368 353 0.74      
9 A2 3102 2982 0.00      
10 A2 1473 1416 0.00      
11 A2 1086 1044 0.00      
12 A2 482 463 0.00      
13 A2 77 74 0.00      
14 B1 3094 2974 27.87      
15 B1 1498 1441 21.15      
16 B1 931 895 1.45      
17 B1 194 187 0.01      
18 B2 3158 3037 31.48      
19 B2 3024 2907 2.17      
20 B2 1454 1398 10.77      
21 B2 1373 1320 2.74      
22 B2 1174 1129 16.39      
23 B2 962 924 18.06      
24 B2 632 608 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 18392.9 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 17682.9 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 B3PW91/6-31G(2df,p)
ABC
0.54894 0.22655 0.17066

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.618 -0.779
N2 0.000 -0.618 -0.779
C3 0.000 1.351 0.498
C4 0.000 -1.351 0.498
H5 0.000 2.417 0.271
H6 0.000 -2.417 0.271
H7 -0.887 1.110 1.097
H8 0.887 1.110 1.097
H9 0.887 -1.110 1.097
H10 -0.887 -1.110 1.097

Atom - Atom Distances (Å)
  N1 N2 C3 C4 H5 H6 H7 H8 H9 H10
N11.23631.47222.34682.08323.21202.13302.13302.70092.7009
N21.23632.34681.47223.21202.08322.70092.70092.13302.1330
C31.47222.34682.70161.09033.77491.09721.09722.68372.6837
C42.34681.47222.70163.77491.09032.68372.68371.09721.0972
H52.08323.21201.09033.77494.83461.78261.78263.72993.7299
H63.21202.08323.77491.09034.83463.72993.72991.78261.7826
H72.13302.70091.09722.68371.78263.72991.77392.84202.2204
H82.13302.70091.09722.68371.78263.72991.77392.22042.8420
H92.70092.13302.68371.09723.72991.78262.84202.22041.7739
H102.70092.13302.68371.09723.72991.78262.22042.84201.7739

picture of (Z)-1,2-Dimethyldiazene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 N2 C4 119.843 N1 C3 H5 107.840
N1 C3 H7 111.393 N1 C3 H8 111.393
N2 N1 C3 119.843 N2 C4 H6 107.840
N2 C4 H9 111.393 N2 C4 H10 111.393
H5 C3 H7 109.153 H5 C3 H8 109.153
H6 C4 H9 109.153 H6 C4 H10 109.153
H7 C3 H8 107.871 H9 C4 H10 107.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.099      
2 N -0.099      
3 C -0.381      
4 C -0.381      
5 H 0.163      
6 H 0.163      
7 H 0.158      
8 H 0.158      
9 H 0.158      
10 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.044 3.044
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.150 0.000 0.000
y 0.000 -23.092 0.000
z 0.000 0.000 -28.228
Traceless
 xyz
x 1.510 0.000 0.000
y 0.000 3.096 0.000
z 0.000 0.000 -4.606
Polar
3z2-r2-9.212
x2-y2-1.058
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.208 0.000 0.000
y 0.000 7.173 0.000
z 0.000 0.000 4.997


<r2> (average value of r2) Å2
<r2> 79.157
(<r2>)1/2 8.897