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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-151.233708
Energy at 298.15K-151.241692
HF Energy-151.233708
Nuclear repulsion energy83.477370
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 mPW1PW91/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 3527 3383 1.00      
2 A1 3068 2943 38.68      
3 A1 1670 1601 41.96      
4 A1 1491 1430 0.31      
5 A1 1106 1061 36.16      
6 A1 856 821 2.84      
7 A1 458 440 2.85      
8 A2 3613 3466 0.00      
9 A2 1403 1345 0.00      
10 A2 1077 1033 0.00      
11 A2 251 241 0.00      
12 B1 3611 3464 0.64      
13 B1 3109 2982 25.25      
14 B1 1374 1318 0.27      
15 B1 849 815 0.08      
16 B1 388 372 81.04      
17 B2 3527 3383 1.07      
18 B2 1659 1591 5.51      
19 B2 1392 1335 17.76      
20 B2 1098 1053 79.61      
21 B2 782 750 409.54      

Unscaled Zero Point Vibrational Energy (zpe) 18153.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 17413.2 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 mPW1PW91/cc-pVTZ
ABC
1.19553 0.30460 0.27624

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.548
N2 0.000 1.255 -0.183
N3 0.000 -1.255 -0.183
H4 0.875 0.000 1.200
H5 -0.875 0.000 1.200
H6 0.813 1.323 -0.781
H7 -0.813 1.323 -0.781
H8 -0.813 -1.323 -0.781
H9 0.813 -1.323 -0.781

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45221.45221.09081.09082.04362.04362.04362.0436
N21.45222.50922.06202.06201.01131.01132.76772.7677
N31.45222.50922.06202.06202.76772.76771.01131.0113
H41.09082.06202.06201.74972.38212.91902.91902.3821
H51.09082.06202.06201.74972.91902.38212.38212.9190
H62.04361.01132.76772.38212.91901.62653.10542.6454
H72.04361.01132.76772.91902.38211.62652.64543.1054
H82.04362.76771.01132.91902.38213.10542.64541.6265
H92.04362.76771.01132.38212.91902.64543.10541.6265

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.829 C1 N2 H7 110.829
C1 N3 H8 110.829 C1 N3 H9 110.829
N2 C1 N3 119.518 N2 C1 H4 107.507
N2 C1 H5 107.507 N3 C1 H4 107.507
N3 C1 H5 107.507 H4 C1 H5 106.648
H6 N2 H7 107.062 H8 N3 H9 107.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.003      
2 N -0.301      
3 N -0.301      
4 H 0.081      
5 H 0.081      
6 H 0.109      
7 H 0.109      
8 H 0.109      
9 H 0.109      


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 -1.798 1.798
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.757 0.000 0.000
y 0.000 -25.594 0.000
z 0.000 0.000 -18.240
Traceless
 xyz
x 5.160 0.000 0.000
y 0.000 -8.096 0.000
z 0.000 0.000 2.936
Polar
3z2-r25.871
x2-y28.837
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.362 0.000 0.000
y 0.000 4.856 0.000
z 0.000 0.000 4.441


<r2> (average value of r2) Å2
<r2> 53.413
(<r2>)1/2 7.308