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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-150.727541
Energy at 298.15K-150.735651
HF Energy-150.235466
Counterpoise corrected energy-150.727541
CP Energy at 298.15K-150.735651
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.002568
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 CCD/6-31G*
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 3490 3304 2.14      
2 A1 3106 2939 37.22      
3 A1 1735 1642 50.54      
4 A1 1546 1463 0.16      
5 A1 1161 1099 36.88      
6 A1 921 871 0.00      
7 A1 468 443 7.65      
8 A2 3583 3392 0.00      
9 A2 1432 1355 0.00      
10 A2 1102 1043 0.00      
11 A2 291 275 0.00      
12 B1 3582 3390 0.66      
13 B1 3157 2988 27.58      
14 B1 1420 1344 0.34      
15 B1 872 825 0.93      
16 B1 415 392 114.79      
17 B2 3491 3304 0.02      
18 B2 1726 1633 1.85      
19 B2 1428 1352 23.41      
20 B2 1137 1076 58.45      
21 B2 869 823 432.59      

Unscaled Zero Point Vibrational Energy (zpe) 18464.5 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 17476.6 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 CCD/6-31G*
ABC
1.17026 0.30298 0.27396

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.557
N2 0.000 1.261 -0.184
N3 0.000 -1.261 -0.184
H4 0.882 0.000 1.208
H5 -0.882 0.000 1.208
H6 0.817 1.304 -0.794
H7 -0.817 1.304 -0.794
H8 -0.817 -1.304 -0.794
H9 0.817 -1.304 -0.794

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46281.46281.09561.09562.04822.04822.04822.0482
N21.46282.52182.07482.07481.02031.02032.76032.7603
N31.46282.52182.07482.07482.76032.76031.02031.0203
H41.09562.07482.07481.76342.39032.93152.93152.3903
H51.09562.07482.07481.76342.93152.39032.39032.9315
H62.04821.02032.76032.39032.93151.63343.07782.6086
H72.04821.02032.76032.93152.39031.63342.60863.0778
H82.04822.76031.02032.93152.39033.07782.60861.6334
H92.04822.76031.02032.39032.93152.60863.07781.6334

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.864 C1 N2 H7 109.864
C1 N3 H8 109.864 C1 N3 H9 109.864
N2 C1 N3 119.077 N2 C1 H4 107.515
N2 C1 H5 107.515 N3 C1 H4 107.515
N3 C1 H5 107.515 H4 C1 H5 107.169
H6 N2 H7 106.341 H8 N3 H9 106.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability