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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: BLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/6-31G**
 hartrees
Energy at 0K-151.144382
Energy at 298.15K-151.152323
HF Energy-151.144382
Nuclear repulsion energy82.144914
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 BLYP/6-31G**
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 3349 3323 11.00      
2 A1 2981 2958 42.99      
3 A1 1635 1622 26.89      
4 A1 1457 1446 0.00      
5 A1 1075 1066 25.72      
6 A1 825 819 0.08      
7 A1 436 433 6.36      
8 A2 3434 3408 0.00      
9 A2 1368 1357 0.00      
10 A2 1053 1045 0.00      
11 A2 271 269 0.00      
12 B1 3433 3406 7.10      
13 B1 3024 3001 30.53      
14 B1 1340 1329 0.64      
15 B1 829 823 0.26      
16 B1 406 403 91.55      
17 B2 3348 3323 0.47      
18 B2 1624 1611 0.31      
19 B2 1360 1349 22.04      
20 B2 1013 1005 34.80      
21 B2 778 772 445.97      

Unscaled Zero Point Vibrational Energy (zpe) 17518.6 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 17383.7 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 BLYP/6-31G**
ABC
1.16856 0.29345 0.26635

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.555
N2 0.000 1.283 -0.181
N3 0.000 -1.283 -0.181
H4 0.887 0.000 1.209
H5 -0.887 0.000 1.209
H6 0.819 1.321 -0.802
H7 -0.819 1.321 -0.802
H8 -0.819 -1.321 -0.802
H9 0.819 -1.321 -0.802

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47931.47931.10241.10242.06312.06312.06312.0631
N21.47932.56642.08962.08961.02811.02812.80002.8000
N31.47932.56642.08962.08962.80002.80001.02811.0281
H41.10242.08962.08961.77452.40692.94962.94962.4069
H51.10242.08962.08961.77452.94962.40692.40692.9496
H62.06311.02812.80002.40692.94961.63803.10942.6429
H72.06311.02812.80002.94962.40691.63802.64293.1094
H82.06312.80001.02812.94962.40693.10942.64291.6380
H92.06312.80001.02812.40692.94962.64293.10941.6380

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.416 C1 N2 H7 109.416
C1 N3 H8 109.416 C1 N3 H9 109.416
N2 C1 N3 120.331 N2 C1 H4 107.174
N2 C1 H5 107.174 N3 C1 H4 107.174
N3 C1 H5 107.174 H4 C1 H5 107.188
H6 N2 H7 105.615 H8 N3 H9 105.615
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.021      
2 N -0.533      
3 N -0.533      
4 H 0.103      
5 H 0.103      
6 H 0.210      
7 H 0.210      
8 H 0.210      
9 H 0.210      


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 -1.968 1.968
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.067 0.000 0.000
y 0.000 -25.861 0.000
z 0.000 0.000 -17.984
Traceless
 xyz
x 4.855 0.000 0.000
y 0.000 -8.335 0.000
z 0.000 0.000 3.480
Polar
3z2-r26.960
x2-y28.794
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.136 0.000 0.000
y 0.000 4.246 0.000
z 0.000 0.000 3.897


<r2> (average value of r2) Å2
<r2> 54.776
(<r2>)1/2 7.401