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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-151.180266
Energy at 298.15K-151.188326
HF Energy-151.180266
Nuclear repulsion energy83.248123
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-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 3495 3349 2.01      
2 A1 3071 2943 44.80      
3 A1 1660 1591 31.97      
4 A1 1469 1408 0.23      
5 A1 1122 1076 31.49      
6 A1 891 853 0.54      
7 A1 457 438 5.44      
8 A2 3580 3431 0.00      
9 A2 1399 1341 0.00      
10 A2 1084 1039 0.00      
11 A2 275 264 0.00      
12 B1 3578 3429 0.03      
13 B1 3120 2990 28.08      
14 B1 1374 1317 1.06      
15 B1 855 819 0.15      
16 B1 413 396 86.34      
17 B2 3496 3350 0.08      
18 B2 1653 1584 2.52      
19 B2 1385 1328 27.95      
20 B2 1120 1073 79.12      
21 B2 820 786 375.42      

Unscaled Zero Point Vibrational Energy (zpe) 18158.3 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 17401.1 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-pVDZ
ABC
1.18267 0.30479 0.27586

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/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 1.258 -0.180
N3 0.000 -1.258 -0.180
H4 0.881 0.000 1.209
H5 -0.881 0.000 1.209
H6 0.812 1.298 -0.797
H7 -0.812 1.298 -0.797
H8 -0.812 -1.298 -0.797
H9 0.812 -1.298 -0.797

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45391.45391.10101.10102.03902.03902.03902.0390
N21.45392.51502.07112.07111.02061.02062.75182.7518
N31.45392.51502.07112.07112.75182.75181.02061.0206
H41.10102.07112.07111.76282.39052.92892.92892.3905
H51.10102.07112.07111.76282.92892.39052.39052.9289
H62.03901.02062.75182.39052.92891.62493.06312.5966
H72.03901.02062.75182.92892.39051.62492.59663.0631
H82.03902.75181.02062.92892.39053.06312.59661.6249
H92.03902.75181.02062.39052.92892.59663.06311.6249

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.736 C1 N2 H7 109.736
C1 N3 H8 109.736 C1 N3 H9 109.736
N2 C1 N3 119.744 N2 C1 H4 107.507
N2 C1 H5 107.507 N3 C1 H4 107.507
N3 C1 H5 107.507 H4 C1 H5 106.355
H6 N2 H7 105.510 H8 N3 H9 105.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.032      
2 N -0.219      
3 N -0.219      
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 -16.818 0.000 0.000
y 0.000 -25.303 0.000
z 0.000 0.000 -17.795
Traceless
 xyz
x 4.731 0.000 0.000
y 0.000 -7.996 0.000
z 0.000 0.000 3.266
Polar
3z2-r26.532
x2-y28.485
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.980 0.000 0.000
y 0.000 4.063 0.000
z 0.000 0.000 3.908


<r2> (average value of r2) Å2
<r2> 53.280
(<r2>)1/2 7.299