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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: PBEPBEultrafine/aug-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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-151.045161
Energy at 298.15K-151.053028
HF Energy-151.045161
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.457101
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 PBEPBEultrafine/aug-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 3393 3372 4.15      
2 A1 2986 2968 32.08      
3 A1 1594 1584 37.43      
4 A1 1408 1399 0.62      
5 A1 1055 1049 27.36      
6 A1 803 798 3.51      
7 A1 435 432 1.71      
8 A2 3483 3462 0.00      
9 A2 1339 1331 0.00      
10 A2 1037 1030 0.00      
11 A2 250 248 0.00      
12 B1 3481 3460 0.40      
13 B1 3033 3015 22.56      
14 B1 1312 1304 0.68      
15 B1 819 814 0.05      
16 B1 373 371 74.47      
17 B2 3393 3372 2.58      
18 B2 1584 1574 5.65      
19 B2 1321 1313 15.27      
20 B2 1046 1039 88.30      
21 B2 735 731 377.15      

Unscaled Zero Point Vibrational Energy (zpe) 17438.6 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 17332.3 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
1.17572 0.29634 0.26943

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.550
N2 0.000 1.272 -0.182
N3 0.000 -1.272 -0.182
H4 0.890 0.000 1.208
H5 -0.890 0.000 1.208
H6 0.823 1.342 -0.791
H7 -0.823 1.342 -0.791
H8 -0.823 -1.342 -0.791
H9 0.823 -1.342 -0.791

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46751.46751.10691.10692.06772.06772.06772.0677
N21.46752.54372.08392.08391.02621.02622.80682.8068
N31.46752.54372.08392.08392.80682.80681.02621.0262
H41.10692.08392.08391.77982.40852.95482.95482.4085
H51.10692.08392.08391.77982.95482.40852.40852.9548
H62.06771.02622.80682.40852.95481.64633.14802.6832
H72.06771.02622.80682.95482.40851.64632.68323.1480
H82.06772.80681.02622.95482.40853.14802.68321.6463
H92.06772.80681.02622.40852.95482.68323.14801.6463

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.786 C1 N2 H7 110.786
C1 N3 H8 110.786 C1 N3 H9 110.786
N2 C1 N3 120.151 N2 C1 H4 107.257
N2 C1 H5 107.257 N3 C1 H4 107.257
N3 C1 H5 107.257 H4 C1 H5 107.020
H6 N2 H7 106.663 H8 N3 H9 106.663
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.896      
2 N -0.095      
3 N -0.095      
4 H -0.232      
5 H -0.232      
6 H -0.060      
7 H -0.060      
8 H -0.060      
9 H -0.060      


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 -1.713 1.713
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.448 0.000 0.000
y 0.000 -26.707 0.000
z 0.000 0.000 -19.125
Traceless
 xyz
x 5.468 0.000 0.000
y 0.000 -8.421 0.000
z 0.000 0.000 2.953
Polar
3z2-r25.905
x2-y29.260
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.102 0.000 0.000
y 0.000 6.675 0.000
z 0.000 0.000 5.589


<r2> (average value of r2) Å2
<r2> 55.015
(<r2>)1/2 7.417