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 NH2CH2NH2 (diaminomethane)

using model chemistry: HSEh1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/6-311G*
 hartrees
Energy at 0K-151.072803
Energy at 298.15K-151.080855
HF Energy-151.072803
Nuclear repulsion energy83.340570
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 HSEh1PBE/6-311G*
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 3517 3375 5.06      
2 A1 3077 2952 46.13      
3 A1 1726 1656 64.45      
4 A1 1495 1435 1.21      
5 A1 1122 1077 38.83      
6 A1 887 851 2.45      
7 A1 463 444 4.59      
8 A2 3603 3458 0.00      
9 A2 1420 1362 0.00      
10 A2 1092 1048 0.00      
11 A2 269 258 0.00      
12 B1 3602 3456 1.46      
13 B1 3119 2993 33.30      
14 B1 1395 1339 0.76      
15 B1 856 822 0.46      
16 B1 419 402 103.90      
17 B2 3519 3377 0.18      
18 B2 1715 1646 2.57      
19 B2 1403 1346 22.15      
20 B2 1105 1061 82.62      
21 B2 802 770 481.00      

Unscaled Zero Point Vibrational Energy (zpe) 18303.4 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 17564.0 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 HSEh1PBE/6-311G*
ABC
1.19434 0.30337 0.27530

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.547
N2 0.000 1.258 -0.183
N3 0.000 -1.258 -0.183
H4 0.876 0.000 1.202
H5 -0.876 0.000 1.202
H6 0.815 1.322 -0.782
H7 -0.815 1.322 -0.782
H8 -0.815 -1.322 -0.782
H9 0.815 -1.322 -0.782

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45391.45391.09361.09362.04422.04422.04422.0442
N21.45392.51532.06532.06531.01391.01392.77112.7711
N31.45392.51532.06532.06532.77112.77111.01391.0139
H41.09362.06532.06531.75152.38492.92292.92292.3849
H51.09362.06532.06531.75152.92292.38492.38492.9229
H62.04421.01392.77112.38492.92291.63033.10652.6443
H72.04421.01392.77112.92292.38491.63032.64433.1065
H82.04422.77111.01392.92292.38493.10652.64431.6303
H92.04422.77111.01392.38492.92292.64433.10651.6303

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.592 C1 N2 H7 110.592
C1 N3 H8 110.592 C1 N3 H9 110.592
N2 C1 N3 119.761 N2 C1 H4 107.489
N2 C1 H5 107.489 N3 C1 H4 107.489
N3 C1 H5 107.489 H4 C1 H5 106.420
H6 N2 H7 107.030 H8 N3 H9 107.030
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.213      
2 N -0.737      
3 N -0.737      
4 H 0.233      
5 H 0.233      
6 H 0.306      
7 H 0.306      
8 H 0.306      
9 H 0.306      


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 -2.064 2.064
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.649 0.000 0.000
y 0.000 -26.324 0.000
z 0.000 0.000 -18.205
Traceless
 xyz
x 5.615 0.000 0.000
y 0.000 -8.897 0.000
z 0.000 0.000 3.282
Polar
3z2-r26.564
x2-y29.674
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.086 0.000 0.000
y 0.000 4.319 0.000
z 0.000 0.000 3.976


<r2> (average value of r2) Å2
<r2> 53.661
(<r2>)1/2 7.325