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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HSEh1PBE/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-151.109328
Energy at 298.15K-151.117285
HF Energy-151.109328
Nuclear repulsion energy83.444331
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/aug-cc-pVTZ
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 3526 3391 0.66      
2 A1 3063 2946 32.60      
3 A1 1663 1599 44.09      
4 A1 1484 1427 0.45      
5 A1 1095 1053 35.81      
6 A1 839 807 6.35      
7 A1 458 441 1.41      
8 A2 3613 3475 0.00      
9 A2 1398 1345 0.00      
10 A2 1071 1030 0.00      
11 A2 251 241 0.00      
12 B1 3611 3473 3.99      
13 B1 3105 2987 22.32      
14 B1 1367 1315 0.29      
15 B1 846 813 0.07      
16 B1 378 363 78.53      
17 B2 3527 3392 3.52      
18 B2 1652 1589 8.59      
19 B2 1387 1334 17.11      
20 B2 1096 1054 93.30      
21 B2 762 733 382.47      

Unscaled Zero Point Vibrational Energy (zpe) 18095.5 cm-1
Scaled (by 0.9618) Zero Point Vibrational Energy (zpe) 17404.3 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/aug-cc-pVTZ
ABC
1.19692 0.30405 0.27605

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.547
N2 0.000 1.254 -0.184
N3 0.000 -1.254 -0.184
H4 0.876 0.000 1.199
H5 -0.876 0.000 1.199
H6 0.816 1.336 -0.776
H7 -0.816 1.336 -0.776
H8 -0.816 -1.336 -0.776
H9 0.816 -1.336 -0.776

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45131.45131.09181.09182.04952.04952.04952.0495
N21.45132.50752.06182.06181.01161.01162.77872.7787
N31.45132.50752.06182.06182.77872.77871.01161.0116
H41.09182.06182.06181.75212.38492.92352.92352.3849
H51.09182.06182.06181.75212.92352.38492.38492.9235
H62.04951.01162.77872.38492.92351.63193.13012.6710
H72.04951.01162.77872.92352.38491.63192.67103.1301
H82.04952.77871.01162.92352.38493.13012.67101.6319
H92.04952.77871.01162.38492.92352.67103.13011.6319

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.392 C1 N2 H7 111.392
C1 N3 H8 111.392 C1 N3 H9 111.392
N2 C1 N3 119.515 N2 C1 H4 107.494
N2 C1 H5 107.494 N3 C1 H4 107.494
N3 C1 H5 107.494 H4 C1 H5 106.713
H6 N2 H7 107.527 H8 N3 H9 107.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.061      
2 N -0.434      
3 N -0.434      
4 H 0.278      
5 H 0.278      
6 H 0.063      
7 H 0.063      
8 H 0.063      
9 H 0.063      


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 -1.742 1.742
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.986 0.000 0.000
y 0.000 -26.167 0.000
z 0.000 0.000 -18.737
Traceless
 xyz
x 5.465 0.000 0.000
y 0.000 -8.305 0.000
z 0.000 0.000 2.839
Polar
3z2-r25.679
x2-y29.180
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.777 0.000 0.000
y 0.000 5.982 0.000
z 0.000 0.000 5.171


<r2> (average value of r2) Å2
<r2> 53.777
(<r2>)1/2 7.333