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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-29.022293
Energy at 298.15K-29.029996
HF Energy-29.022293
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy49.605170
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 B3LYP/CEP-121G
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 3484 3395 6.26      
2 A1 3031 2954 57.60      
3 A1 1697 1653 56.91      
4 A1 1488 1450 1.88      
5 A1 1046 1019 59.52      
6 A1 680 663 85.44      
7 A1 441 430 1.94      
8 A2 3617 3525 0.00      
9 A2 1387 1351 0.00      
10 A2 1040 1014 0.00      
11 A2 220 215 0.00      
12 B1 3618 3526 1.27      
13 B1 3089 3011 41.73      
14 B1 1336 1302 0.49      
15 B1 830 808 0.53      
16 B1 393 383 87.63      
17 B2 3486 3397 0.09      
18 B2 1687 1644 18.59      
19 B2 1398 1363 15.82      
20 B2 1057 1030 142.95      
21 B2 511 498 600.58      

Unscaled Zero Point Vibrational Energy (zpe) 17767.3 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 17314.2 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 B3LYP/CEP-121G
ABC
1.18130 0.28708 0.26307

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.552
N2 0.000 1.275 -0.200
N3 0.000 -1.275 -0.200
H4 0.883 0.000 1.201
H5 -0.883 0.000 1.201
H6 0.846 1.470 -0.730
H7 -0.846 1.470 -0.730
H8 -0.846 -1.470 -0.730
H9 0.846 -1.470 -0.730

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.48011.48011.09621.09622.12582.12582.12582.1258
N21.48012.55062.09002.09001.01701.01702.92152.9215
N31.48012.55062.09002.09002.92152.92151.01701.0170
H41.09622.09002.09001.76602.42742.97982.97982.4274
H51.09622.09002.09001.76602.97982.42742.42742.9798
H62.12581.01702.92152.42742.97981.69143.39242.9407
H72.12581.01702.92152.97982.42741.69142.94073.3924
H82.12582.92151.01702.97982.42743.39242.94071.6914
H92.12582.92151.01702.42742.97982.94073.39241.6914

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 115.456 C1 N2 H7 115.456
C1 N3 H8 115.456 C1 N3 H9 115.456
N2 C1 N3 119.007 N2 C1 H4 107.503
N2 C1 H5 107.503 N3 C1 H4 107.503
N3 C1 H5 107.503 H4 C1 H5 107.312
H6 N2 H7 112.508 H8 N3 H9 112.508
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.290      
2 N -0.523      
3 N -0.523      
4 H 0.164      
5 H 0.164      
6 H 0.252      
7 H 0.252      
8 H 0.252      
9 H 0.252      


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 -1.998 1.998
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.422 0.000 0.000
y 0.000 -25.117 0.000
z 0.000 0.000 -19.060
Traceless
 xyz
x 5.666 0.000 0.000
y 0.000 -7.375 0.000
z 0.000 0.000 1.709
Polar
3z2-r23.418
x2-y28.694
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.277 0.000 0.000
y 0.000 4.652 0.000
z 0.000 0.000 3.986


<r2> (average value of r2) Å2
<r2> 48.580
(<r2>)1/2 6.970