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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-151.187670
Energy at 298.15K-151.195293
HF Energy-151.187670
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.103928
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 B3LYP/SDD
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 3546 3409 0.47      
2 A1 3084 2964 54.23      
3 A1 1687 1621 54.05      
4 A1 1489 1432 4.73      
5 A1 1057 1017 68.52      
6 A1 655 629 117.09      
7 A1 443 426 8.21      
8 A2 3677 3535 0.00      
9 A2 1384 1330 0.00      
10 A2 1036 996 0.00      
11 A2 223 214 0.00      
12 B1 3678 3536 1.28      
13 B1 3143 3022 40.51      
14 B1 1333 1282 1.51      
15 B1 833 801 2.69      
16 B1 392 376 91.86      
17 B2 3548 3410 0.32      
18 B2 1677 1613 22.01      
19 B2 1402 1348 6.73      
20 B2 1068 1027 143.74      
21 B2 464 446 594.95      

Unscaled Zero Point Vibrational Energy (zpe) 17909.2 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 17216.1 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 B3LYP/SDD
ABC
1.19169 0.28855 0.26489

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.547
N2 0.000 1.269 -0.200
N3 0.000 -1.269 -0.200
H4 0.881 0.000 1.198
H5 -0.881 0.000 1.198
H6 0.848 1.482 -0.718
H7 -0.848 1.482 -0.718
H8 -0.848 -1.482 -0.718
H9 0.848 -1.482 -0.718

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47271.47271.09581.09582.12522.12522.12522.1252
N21.47272.53812.08392.08391.01611.01612.92502.9250
N31.47272.53812.08392.08392.92502.92501.01611.0161
H41.09582.08392.08391.76292.42292.97652.97652.4229
H51.09582.08392.08391.76292.97652.42292.42292.9765
H62.12521.01612.92502.42292.97651.69543.41472.9641
H72.12521.01612.92502.97652.42291.69542.96413.4147
H82.12522.92501.01612.97652.42293.41472.96411.6954
H92.12522.92501.01612.42292.97652.96413.41471.6954

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 116.064 C1 N2 H7 116.064
C1 N3 H8 116.064 C1 N3 H9 116.064
N2 C1 N3 119.017 N2 C1 H4 107.546
N2 C1 H5 107.546 N3 C1 H4 107.546
N3 C1 H5 107.546 H4 C1 H5 107.099
H6 N2 H7 113.079 H8 N3 H9 113.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.330      
2 N -0.570      
3 N -0.570      
4 H 0.208      
5 H 0.208      
6 H 0.264      
7 H 0.264      
8 H 0.264      
9 H 0.264      


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 -2.085 2.085
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.086 0.000 0.000
y 0.000 -24.648 0.000
z 0.000 0.000 -18.587
Traceless
 xyz
x 5.532 0.000 0.000
y 0.000 -7.311 0.000
z 0.000 0.000 1.780
Polar
3z2-r23.559
x2-y28.562
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.870 0.000 0.000
y 0.000 3.945 0.000
z 0.000 0.000 3.271


<r2> (average value of r2) Å2
<r2> 55.404
(<r2>)1/2 7.443