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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3LYP/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 B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-151.239839
Energy at 298.15K-151.247761
HF Energy-151.239839
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.814656
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/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 3480 3377 1.53      
2 A1 3056 2966 33.90      
3 A1 1646 1597 40.61      
4 A1 1464 1421 0.43      
5 A1 1074 1042 34.97      
6 A1 825 801 5.71      
7 A1 449 436 1.53      
8 A2 3567 3462 0.00      
9 A2 1383 1342 0.00      
10 A2 1065 1033 0.00      
11 A2 247 240 0.00      
12 B1 3566 3460 1.58      
13 B1 3100 3008 24.93      
14 B1 1351 1311 0.29      
15 B1 844 819 0.12      
16 B1 376 364 77.72      
17 B2 3481 3377 3.15      
18 B2 1637 1589 8.18      
19 B2 1374 1333 16.66      
20 B2 1067 1035 96.78      
21 B2 751 729 378.18      

Unscaled Zero Point Vibrational Energy (zpe) 17900.9 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 17371.0 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/aug-cc-pVDZ
ABC
1.18082 0.29904 0.27156

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.552
N2 0.000 1.264 -0.185
N3 0.000 -1.264 -0.185
H4 0.884 0.000 1.204
H5 -0.884 0.000 1.204
H6 0.820 1.347 -0.783
H7 -0.820 1.347 -0.783
H8 -0.820 -1.347 -0.783
H9 0.820 -1.347 -0.783

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46341.46341.09871.09872.06542.06542.06542.0654
N21.46342.52892.07592.07591.01791.01792.80122.8012
N31.46342.52892.07592.07592.80122.80121.01791.0179
H41.09872.07592.07591.76852.40062.94332.94332.4006
H51.09872.07592.07591.76852.94332.40062.40062.9433
H62.06541.01792.80122.40062.94331.63983.15312.6932
H72.06541.01792.80122.94332.40061.63982.69323.1531
H82.06542.80121.01792.94332.40063.15312.69321.6398
H92.06542.80121.01792.40062.94332.69323.15311.6398

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.425 C1 N2 H7 111.425
C1 N3 H8 111.425 C1 N3 H9 111.425
N2 C1 N3 119.546 N2 C1 H4 107.384
N2 C1 H5 107.384 N3 C1 H4 107.384
N3 C1 H5 107.384 H4 C1 H5 107.189
H6 N2 H7 107.314 H8 N3 H9 107.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.049      
2 N -0.020      
3 N -0.020      
4 H -0.307      
5 H -0.307      
6 H -0.099      
7 H -0.099      
8 H -0.099      
9 H -0.099      


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 -1.723 1.723
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.293 0.000 0.000
y 0.000 -26.622 0.000
z 0.000 0.000 -18.983
Traceless
 xyz
x 5.510 0.000 0.000
y 0.000 -8.484 0.000
z 0.000 0.000 2.974
Polar
3z2-r25.949
x2-y29.330
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.878 0.000 0.000
y 0.000 6.183 0.000
z 0.000 0.000 5.272


<r2> (average value of r2) Å2
<r2> 54.638
(<r2>)1/2 7.392