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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-151.163476
Energy at 298.15K-151.171520
HF Energy-151.163476
Nuclear repulsion energy83.066671
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 B3PW91/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 3468 3347 2.85      
2 A1 3052 2945 45.24      
3 A1 1651 1593 30.67      
4 A1 1461 1409 0.22      
5 A1 1113 1074 30.49      
6 A1 881 850 0.37      
7 A1 454 438 5.48      
8 A2 3553 3428 0.00      
9 A2 1391 1342 0.00      
10 A2 1079 1042 0.00      
11 A2 274 265 0.00      
12 B1 3551 3426 0.21      
13 B1 3100 2992 28.36      
14 B1 1366 1318 1.13      
15 B1 850 820 0.13      
16 B1 412 398 85.43      
17 B2 3469 3348 0.16      
18 B2 1643 1586 2.07      
19 B2 1377 1329 26.70      
20 B2 1104 1066 75.16      
21 B2 814 786 379.12      

Unscaled Zero Point Vibrational Energy (zpe) 18031.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 17400.6 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 B3PW91/cc-pVDZ
ABC
1.18010 0.30307 0.27442

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.550
N2 0.000 1.261 -0.180
N3 0.000 -1.261 -0.180
H4 0.883 0.000 1.210
H5 -0.883 0.000 1.210
H6 0.814 1.302 -0.798
H7 -0.814 1.302 -0.798
H8 -0.814 -1.302 -0.798
H9 0.814 -1.302 -0.798

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45731.45731.10271.10272.04302.04302.04302.0430
N21.45732.52252.07472.07471.02251.02252.75932.7593
N31.45732.52252.07472.07472.75932.75931.02251.0225
H41.10272.07472.07471.76562.39482.93392.93392.3948
H51.10272.07472.07471.76562.93392.39482.39482.9339
H62.04301.02252.75932.39482.93391.62723.07052.6039
H72.04301.02252.75932.93392.39481.62722.60393.0705
H82.04302.75931.02252.93392.39483.07052.60391.6272
H92.04302.75931.02252.39482.93392.60393.07051.6272

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.706 C1 N2 H7 109.706
C1 N3 H8 109.706 C1 N3 H9 109.706
N2 C1 N3 119.879 N2 C1 H4 107.467
N2 C1 H5 107.467 N3 C1 H4 107.467
N3 C1 H5 107.467 H4 C1 H5 106.372
H6 N2 H7 105.440 H8 N3 H9 105.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.023      
2 N -0.215      
3 N -0.215      
4 H 0.053      
5 H 0.053      
6 H 0.075      
7 H 0.075      
8 H 0.075      
9 H 0.075      


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 -1.888 1.888
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.840 0.000 0.000
y 0.000 -25.282 0.000
z 0.000 0.000 -17.806
Traceless
 xyz
x 4.704 0.000 0.000
y 0.000 -7.959 0.000
z 0.000 0.000 3.255
Polar
3z2-r26.510
x2-y28.442
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.014 0.000 0.000
y 0.000 4.110 0.000
z 0.000 0.000 3.943


<r2> (average value of r2) Å2
<r2> 53.481
(<r2>)1/2 7.313