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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: LSDA/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/6-31+G**
 hartrees
Energy at 0K-150.436821
Energy at 298.15K-150.444699
HF Energy-150.436821
Nuclear repulsion energy83.245182
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 LSDA/6-31+G**
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 3440 3389 0.08      
2 A1 2990 2945 29.45      
3 A1 1598 1574 74.25      
4 A1 1412 1391 1.06      
5 A1 1076 1060 30.75      
6 A1 783 771 25.08      
7 A1 450 443 0.32      
8 A2 3545 3492 0.00      
9 A2 1334 1314 0.00      
10 A2 1023 1008 0.00      
11 A2 262 258 0.00      
12 B1 3542 3489 9.79      
13 B1 3040 2994 19.04      
14 B1 1307 1287 0.02      
15 B1 812 800 0.02      
16 B1 406 400 95.45      
17 B2 3442 3391 1.28      
18 B2 1588 1564 8.22      
19 B2 1325 1306 18.18      
20 B2 1107 1090 137.89      
21 B2 663 654 480.17      

Unscaled Zero Point Vibrational Energy (zpe) 17572.3 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 17308.7 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 LSDA/6-31+G**
ABC
1.19843 0.30296 0.27642

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.538
N2 0.000 1.251 -0.183
N3 0.000 -1.251 -0.183
H4 0.884 0.000 1.202
H5 -0.884 0.000 1.202
H6 0.832 1.362 -0.770
H7 -0.832 1.362 -0.770
H8 -0.832 -1.362 -0.770
H9 0.832 -1.362 -0.770

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.44351.44351.10521.10522.06362.06362.06362.0636
N21.44352.50122.06462.06461.02421.02422.80412.8041
N31.44352.50122.06462.06462.80412.80411.02421.0242
H41.10522.06462.06461.76702.39732.94732.94732.3973
H51.10522.06462.06461.76702.94732.39732.39732.9473
H62.06361.02422.80412.39732.94731.66343.19212.7244
H72.06361.02422.80412.94732.39731.66342.72443.1921
H82.06362.80411.02422.94732.39733.19212.72441.6634
H92.06362.80411.02422.39732.94732.72443.19211.6634

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 112.377 C1 N2 H7 112.377
C1 N3 H8 112.377 C1 N3 H9 112.377
N2 C1 N3 120.074 N2 C1 H4 107.461
N2 C1 H5 107.461 N3 C1 H4 107.461
N3 C1 H5 107.461 H4 C1 H5 106.148
H6 N2 H7 108.602 H8 N3 H9 108.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.321      
2 N -0.631      
3 N -0.631      
4 H 0.181      
5 H 0.181      
6 H 0.305      
7 H 0.305      
8 H 0.305      
9 H 0.305      


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 -1.992 1.992
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.989 0.000 0.000
y 0.000 -26.840 0.000
z 0.000 0.000 -19.208
Traceless
 xyz
x 6.035 0.000 0.000
y 0.000 -8.742 0.000
z 0.000 0.000 2.707
Polar
3z2-r25.413
x2-y29.851
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.506 0.000 0.000
y 0.000 6.029 0.000
z 0.000 0.000 4.972


<r2> (average value of r2) Å2
<r2> 54.237
(<r2>)1/2 7.365