return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: LSDA/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 LSDA/aug-cc-pVDZ
 hartrees
Energy at 0K-150.442923
Energy at 298.15K-150.450764
HF Energy-150.442923
Nuclear repulsion energy83.241161
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/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 3413 3374 0.53      
2 A1 2984 2950 26.48      
3 A1 1570 1552 45.46      
4 A1 1384 1368 1.41      
5 A1 1079 1067 25.11      
6 A1 790 781 12.13      
7 A1 440 435 0.56      
8 A2 3509 3469 0.00      
9 A2 1323 1308 0.00      
10 A2 1022 1011 0.00      
11 A2 240 238 0.00      
12 B1 3505 3466 6.99      
13 B1 3031 2997 15.62      
14 B1 1296 1282 0.58      
15 B1 810 801 0.03      
16 B1 381 377 75.36      
17 B2 3415 3376 3.70      
18 B2 1561 1544 11.80      
19 B2 1304 1289 12.91      
20 B2 1110 1098 108.25      
21 B2 680 672 394.76      

Unscaled Zero Point Vibrational Energy (zpe) 17423.5 cm-1
Scaled (by 0.9887) Zero Point Vibrational Energy (zpe) 17226.6 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/aug-cc-pVDZ
ABC
1.18777 0.30466 0.27715

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.542
N2 0.000 1.250 -0.182
N3 0.000 -1.250 -0.182
H4 0.887 0.000 1.208
H5 -0.887 0.000 1.208
H6 0.828 1.342 -0.781
H7 -0.828 1.342 -0.781
H8 -0.828 -1.342 -0.781
H9 0.828 -1.342 -0.781

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.44421.44421.10901.10902.05812.05812.05812.0581
N21.44422.49902.06872.06871.02611.02612.78542.7854
N31.44422.49902.06872.06872.78542.78541.02611.0261
H41.10902.06872.06871.77402.39952.94892.94892.3995
H51.10902.06872.06871.77402.94892.39952.39952.9489
H62.05811.02612.78542.39952.94891.65633.15332.6833
H72.05811.02612.78542.94892.39951.65632.68333.1533
H82.05812.78541.02612.94892.39953.15332.68331.6563
H92.05812.78541.02612.39952.94892.68333.15331.6563

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.732 C1 N2 H7 111.732
C1 N3 H8 111.732 C1 N3 H9 111.732
N2 C1 N3 119.812 N2 C1 H4 107.515
N2 C1 H5 107.515 N3 C1 H4 107.515
N3 C1 H5 107.515 H4 C1 H5 106.232
H6 N2 H7 107.630 H8 N3 H9 107.630
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.669      
2 N 0.004      
3 N 0.004      
4 H -0.245      
5 H -0.245      
6 H -0.047      
7 H -0.047      
8 H -0.047      
9 H -0.047      


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 -1.748 1.748
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.331 0.000 0.000
y 0.000 -26.404 0.000
z 0.000 0.000 -19.199
Traceless
 xyz
x 5.470 0.000 0.000
y 0.000 -8.139 0.000
z 0.000 0.000 2.669
Polar
3z2-r25.337
x2-y29.073
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.130 0.000 0.000
y 0.000 6.569 0.000
z 0.000 0.000 5.620


<r2> (average value of r2) Å2
<r2> 54.061
(<r2>)1/2 7.353