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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HSEh1PBE/3-21G*

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/3-21G*
 hartrees
Energy at 0K-150.200197
Energy at 298.15K-150.208086
HF Energy-150.200197
Nuclear repulsion energy82.391715
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/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 A1 3445 3306 4.27      
2 A1 3091 2967 38.78      
3 A1 1733 1663 36.42      
4 A1 1526 1465 3.50      
5 A1 1076 1033 55.52      
6 A1 725 696 25.40      
7 A1 444 426 1.85      
8 A2 3550 3408 0.00      
9 A2 1430 1372 0.00      
10 A2 1089 1046 0.00      
11 A2 284 272 0.00      
12 B1 3551 3408 0.74      
13 B1 3141 3015 24.95      
14 B1 1375 1320 0.21      
15 B1 835 802 0.35      
16 B1 439 422 116.93      
17 B2 3445 3307 0.79      
18 B2 1719 1650 3.20      
19 B2 1411 1354 3.19      
20 B2 1066 1023 45.48      
21 B2 577 554 600.12      

Unscaled Zero Point Vibrational Energy (zpe) 17974.9 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 17254.1 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/3-21G*
ABC
1.18717 0.29304 0.26787

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.548
N2 0.000 1.271 -0.189
N3 0.000 -1.271 -0.189
H4 0.882 0.000 1.196
H5 -0.882 0.000 1.196
H6 0.838 1.399 -0.759
H7 -0.838 1.399 -0.759
H8 -0.838 -1.399 -0.759
H9 0.838 -1.399 -0.759

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46911.46911.09421.09422.09032.09032.09032.0903
N21.46912.54192.07622.07621.02201.02202.85612.8561
N31.46912.54192.07622.07622.85612.85611.02201.0220
H41.09422.07622.07621.76312.40502.95622.95622.4050
H51.09422.07622.07621.76312.95622.40502.40502.9562
H62.09031.02202.85612.40502.95621.67623.26192.7983
H72.09031.02202.85612.95622.40501.67622.79833.2619
H82.09032.85611.02202.95622.40503.26192.79831.6762
H92.09032.85611.02202.40502.95622.79833.26191.6762

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 112.867 C1 N2 H7 112.867
C1 N3 H8 112.867 C1 N3 H9 112.867
N2 C1 N3 119.796 N2 C1 H4 107.283
N2 C1 H5 107.283 N3 C1 H4 107.283
N3 C1 H5 107.283 H4 C1 H5 107.349
H6 N2 H7 110.182 H8 N3 H9 110.182
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.161      
2 N -0.700      
3 N -0.700      
4 H 0.237      
5 H 0.237      
6 H 0.271      
7 H 0.271      
8 H 0.271      
9 H 0.271      


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 -2.198 2.198
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.283 0.000 0.000
y 0.000 -25.062 0.000
z 0.000 0.000 -17.678
Traceless
 xyz
x 5.086 0.000 0.000
y 0.000 -8.081 0.000
z 0.000 0.000 2.995
Polar
3z2-r25.990
x2-y28.778
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.608 0.000 0.000
y 0.000 3.459 0.000
z 0.000 0.000 3.017


<r2> (average value of r2) Å2
<r2> 54.566
(<r2>)1/2 7.387