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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: PBE1PBE/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 PBE1PBE/cc-pVDZ
 hartrees
Energy at 0K-151.039115
Energy at 298.15K-151.047176
HF Energy-151.039115
Nuclear repulsion energy83.252357
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 PBE1PBE/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 3491 3356 2.12      
2 A1 3066 2948 43.92      
3 A1 1655 1592 32.32      
4 A1 1462 1406 0.25      
5 A1 1124 1080 30.48      
6 A1 892 858 0.48      
7 A1 457 439 5.59      
8 A2 3577 3439 0.00      
9 A2 1395 1342 0.00      
10 A2 1082 1040 0.00      
11 A2 276 265 0.00      
12 B1 3574 3437 0.03      
13 B1 3116 2996 27.36      
14 B1 1372 1319 1.19      
15 B1 853 820 0.15      
16 B1 414 398 86.83      
17 B2 3492 3358 0.06      
18 B2 1648 1584 2.54      
19 B2 1379 1326 28.15      
20 B2 1125 1082 79.03      
21 B2 819 788 375.92      

Unscaled Zero Point Vibrational Energy (zpe) 18133.8 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 17435.7 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 PBE1PBE/cc-pVDZ
ABC
1.18187 0.30509 0.27611

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/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 1.296 -0.798
H7 -0.813 1.296 -0.798
H8 -0.813 -1.296 -0.798
H9 0.813 -1.296 -0.798

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45331.45331.10241.10242.03802.03802.03802.0380
N21.45332.51412.07162.07161.02161.02162.74922.7492
N31.45332.51412.07162.07162.74922.74921.02161.0216
H41.10242.07162.07161.76442.39062.92972.92972.3906
H51.10242.07162.07161.76442.92972.39062.39062.9297
H62.03801.02162.74922.39062.92971.62563.05892.5912
H72.03801.02162.74922.92972.39061.62562.59123.0589
H82.03802.74921.02162.92972.39063.05892.59121.6256
H92.03802.74921.02162.39062.92972.59123.05891.6256

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.634 C1 N2 H7 109.634
C1 N3 H8 109.634 C1 N3 H9 109.634
N2 C1 N3 119.763 N2 C1 H4 107.511
N2 C1 H5 107.511 N3 C1 H4 107.511
N3 C1 H5 107.511 H4 C1 H5 106.312
H6 N2 H7 105.434 H8 N3 H9 105.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.027      
2 N -0.216      
3 N -0.216      
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 -1.894 1.894
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.868 0.000 0.000
y 0.000 -25.370 0.000
z 0.000 0.000 -17.845
Traceless
 xyz
x 4.739 0.000 0.000
y 0.000 -8.013 0.000
z 0.000 0.000 3.274
Polar
3z2-r26.549
x2-y28.501
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.008 0.000 0.000
y 0.000 4.081 0.000
z 0.000 0.000 3.939


<r2> (average value of r2) Å2
<r2> 53.283
(<r2>)1/2 7.300