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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HF/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/aug-cc-pVDZ
 hartrees
Energy at 0K-150.273719
Energy at 298.15K-150.281847
HF Energy-150.273719
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.704645
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 HF/aug-cc-pVDZ
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 3716 3384 0.05      
2 A1 3210 2923 49.22      
3 A1 1784 1625 49.37      
4 A1 1602 1459 0.12      
5 A1 1163 1059 52.18      
6 A1 932 848 5.88      
7 A1 486 443 2.07      
8 A2 3801 3461 0.00      
9 A2 1501 1366 0.00      
10 A2 1141 1039 0.00      
11 A2 265 241 0.00      
12 B1 3800 3461 3.22      
13 B1 3251 2961 40.55      
14 B1 1472 1340 0.00      
15 B1 913 831 0.52      
16 B1 390 355 88.73      
17 B2 3716 3384 3.60      
18 B2 1779 1620 14.58      
19 B2 1499 1365 27.56      
20 B2 1178 1073 113.37      
21 B2 851 775 354.77      

Unscaled Zero Point Vibrational Energy (zpe) 19223.4 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 17504.9 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 HF/aug-cc-pVDZ
ABC
1.18990 0.30729 0.27792

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.554
N2 0.000 1.247 -0.188
N3 0.000 -1.247 -0.188
H4 0.876 0.000 1.201
H5 -0.876 0.000 1.201
H6 0.809 1.328 -0.775
H7 -0.809 1.328 -0.775
H8 -0.809 -1.328 -0.775
H9 0.809 -1.328 -0.775

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45091.45091.08851.08852.04572.04572.04572.0457
N21.45092.49432.06132.06131.00321.00322.76272.7627
N31.45092.49432.06132.06132.76272.76271.00321.0032
H41.08852.06132.06131.75132.38132.91642.91642.3813
H51.08852.06132.06131.75132.91642.38132.38132.9164
H62.04571.00322.76272.38132.91641.61853.11072.6565
H72.04571.00322.76272.91642.38131.61852.65653.1107
H82.04572.76271.00322.91642.38133.11072.65651.6185
H92.04572.76271.00322.38132.91642.65653.11071.6185

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.633 C1 N2 H7 111.633
C1 N3 H8 111.633 C1 N3 H9 111.633
N2 C1 N3 118.537 N2 C1 H4 107.671
N2 C1 H5 107.671 N3 C1 H4 107.671
N3 C1 H5 107.671 H4 C1 H5 107.114
H6 N2 H7 107.541 H8 N3 H9 107.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.036      
2 N -0.341      
3 N -0.341      
4 H -0.114      
5 H -0.114      
6 H -0.032      
7 H -0.032      
8 H -0.032      
9 H -0.032      


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 -1.815 1.815
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.852 0.000 0.000
y 0.000 -26.474 0.000
z 0.000 0.000 -18.475
Traceless
 xyz
x 5.623 0.000 0.000
y 0.000 -8.811 0.000
z 0.000 0.000 3.188
Polar
3z2-r26.376
x2-y29.622
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.381 0.000 0.000
y 0.000 5.147 0.000
z 0.000 0.000 4.611


<r2> (average value of r2) Å2
<r2> 53.470
(<r2>)1/2 7.312