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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-151.147193
Energy at 298.15K-151.155168
HF Energy-151.147193
Nuclear repulsion energy83.357933
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 B1B95/6-31+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 3553 3398 0.24      
2 A1 3095 2960 36.51      
3 A1 1677 1604 68.25      
4 A1 1491 1426 0.45      
5 A1 1095 1048 41.46      
6 A1 842 805 13.44      
7 A1 461 441 1.84      
8 A2 3653 3495 0.00      
9 A2 1400 1339 0.00      
10 A2 1068 1022 0.00      
11 A2 264 253 0.00      
12 B1 3651 3492 4.36      
13 B1 3145 3008 26.81      
14 B1 1367 1308 0.00      
15 B1 846 809 0.21      
16 B1 398 381 99.97      
17 B2 3554 3399 1.12      
18 B2 1667 1595 6.70      
19 B2 1394 1333 24.00      
20 B2 1106 1058 121.99      
21 B2 746 714 442.20      

Unscaled Zero Point Vibrational Energy (zpe) 18235.3 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 17443.8 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 B1B95/6-31+G**
ABC
1.19918 0.30275 0.27531

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.546
N2 0.000 1.255 -0.184
N3 0.000 -1.255 -0.184
H4 0.877 0.000 1.197
H5 -0.877 0.000 1.197
H6 0.819 1.346 -0.773
H7 -0.819 1.346 -0.773
H8 -0.819 -1.346 -0.773
H9 0.819 -1.346 -0.773

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45181.45181.09211.09212.05462.05462.05462.0546
N21.45182.51032.06172.06171.01271.01272.79012.7901
N31.45182.51032.06172.06172.79012.79011.01271.0127
H41.09212.06172.06171.75362.38632.92692.92692.3863
H51.09212.06172.06171.75362.92692.38632.38632.9269
H62.05461.01272.79012.38632.92691.63803.15172.6926
H72.05461.01272.79012.92692.38631.63802.69263.1517
H82.05462.79011.01272.92692.38633.15172.69261.6380
H92.05462.79011.01272.38632.92692.69263.15171.6380

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.713 C1 N2 H7 111.713
C1 N3 H8 111.713 C1 N3 H9 111.713
N2 C1 N3 119.658 N2 C1 H4 107.434
N2 C1 H5 107.434 N3 C1 H4 107.434
N3 C1 H5 107.434 H4 C1 H5 106.812
H6 N2 H7 107.943 H8 N3 H9 107.943
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 N -0.626      
3 N -0.626      
4 H 0.155      
5 H 0.155      
6 H 0.288      
7 H 0.288      
8 H 0.288      
9 H 0.288      


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 -1.972 1.972
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.766 0.000 0.000
y 0.000 -26.773 0.000
z 0.000 0.000 -18.649
Traceless
 xyz
x 5.945 0.000 0.000
y 0.000 -9.066 0.000
z 0.000 0.000 3.121
Polar
3z2-r26.241
x2-y210.007
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.230 0.000 0.000
y 0.000 5.363 0.000
z 0.000 0.000 4.524


<r2> (average value of r2) Å2
<r2> 53.986
(<r2>)1/2 7.348