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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HSEh1PBE/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 HSEh1PBE/cc-pVDZ
 hartrees
Energy at 0K-151.050554
Energy at 298.15K-151.058609
HF Energy-151.050554
Nuclear repulsion energy83.247175
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/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 3487 3354 2.44      
2 A1 3063 2947 44.96      
3 A1 1656 1593 31.78      
4 A1 1462 1407 0.20      
5 A1 1122 1080 30.34      
6 A1 891 857 0.41      
7 A1 456 439 5.64      
8 A2 3573 3436 0.00      
9 A2 1395 1342 0.00      
10 A2 1083 1041 0.00      
11 A2 274 263 0.00      
12 B1 3570 3434 0.09      
13 B1 3113 2994 28.28      
14 B1 1372 1320 1.21      
15 B1 853 820 0.17      
16 B1 413 397 86.48      
17 B2 3488 3355 0.07      
18 B2 1648 1585 2.42      
19 B2 1380 1327 28.16      
20 B2 1122 1079 78.86      
21 B2 819 788 376.91      

Unscaled Zero Point Vibrational Energy (zpe) 18118.7 cm-1
Scaled (by 0.9619) Zero Point Vibrational Energy (zpe) 17428.4 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/cc-pVDZ
ABC
1.18127 0.30510 0.27609

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.549
N2 0.000 1.257 -0.180
N3 0.000 -1.257 -0.180
H4 0.882 0.000 1.210
H5 -0.882 0.000 1.210
H6 0.813 1.295 -0.798
H7 -0.813 1.295 -0.798
H8 -0.813 -1.295 -0.798
H9 0.813 -1.295 -0.798

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45351.45351.10241.10242.03812.03812.03812.0381
N21.45352.51412.07182.07181.02151.02152.74912.7491
N31.45352.51412.07182.07182.74912.74911.02151.0215
H41.10242.07182.07181.76462.39082.92992.92992.3908
H51.10242.07182.07181.76462.92992.39082.39082.9299
H62.03811.02152.74912.39082.92991.62563.05872.5910
H72.03811.02152.74912.92992.39081.62562.59103.0587
H82.03812.74911.02152.92992.39083.05872.59101.6256
H92.03812.74911.02152.39082.92992.59103.05871.6256

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.637 C1 N2 H7 109.637
C1 N3 H8 109.637 C1 N3 H9 109.637
N2 C1 N3 119.733 N2 C1 H4 107.517
N2 C1 H5 107.517 N3 C1 H4 107.517
N3 C1 H5 107.517 H4 C1 H5 106.325
H6 N2 H7 105.439 H8 N3 H9 105.439
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.025      
2 N -0.213      
3 N -0.213      
4 H 0.052      
5 H 0.052      
6 H 0.074      
7 H 0.074      
8 H 0.074      
9 H 0.074      


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 -1.890 1.890
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.884 0.000 0.000
y 0.000 -25.358 0.000
z 0.000 0.000 -17.857
Traceless
 xyz
x 4.724 0.000 0.000
y 0.000 -7.988 0.000
z 0.000 0.000 3.264
Polar
3z2-r26.528
x2-y28.474
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.020 0.000 0.000
y 0.000 4.090 0.000
z 0.000 0.000 3.951


<r2> (average value of r2) Å2
<r2> 53.289
(<r2>)1/2 7.300