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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/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 CCD/cc-pVDZ
 hartrees
Energy at 0K-150.785131
Energy at 298.15K-150.793249
HF Energy-150.256263
Counterpoise corrected energy-150.785131
CP Energy at 298.15K-150.793249
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.919544
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/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 3495 3344 3.53      
2 A1 3087 2953 45.08      
3 A1 1678 1605 31.75      
4 A1 1499 1434 0.01      
5 A1 1153 1103 27.41      
6 A1 924 884 0.59      
7 A1 461 441 7.97      
8 A2 3581 3426 0.00      
9 A2 1418 1356 0.00      
10 A2 1097 1049 0.00      
11 A2 285 272 0.00      
12 B1 3580 3425 1.11      
13 B1 3139 3003 32.08      
14 B1 1398 1337 1.20      
15 B1 867 829 1.63      
16 B1 414 396 91.18      
17 B2 3496 3344 0.00      
18 B2 1672 1600 1.51      
19 B2 1409 1348 33.61      
20 B2 1139 1090 60.00      
21 B2 884 846 339.35      

Unscaled Zero Point Vibrational Energy (zpe) 18336.5 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 17542.5 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/cc-pVDZ
ABC
1.15937 0.30424 0.27430

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.559
N2 0.000 1.262 -0.183
N3 0.000 -1.262 -0.183
H4 0.887 0.000 1.217
H5 -0.887 0.000 1.217
H6 0.812 1.275 -0.808
H7 -0.812 1.275 -0.808
H8 -0.812 -1.275 -0.808
H9 0.812 -1.275 -0.808

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46411.46411.10471.10472.03832.03832.03832.0383
N21.46412.52402.08352.08351.02461.02462.73652.7365
N31.46412.52402.08352.08352.73652.73651.02461.0246
H41.10472.08352.08351.77472.39432.93512.93512.3943
H51.10472.08352.08351.77472.93512.39432.39432.9351
H62.03831.02462.73652.39432.93511.62413.02402.5508
H72.03831.02462.73652.93512.39431.62412.55083.0240
H82.03832.73651.02462.93512.39433.02402.55081.6241
H92.03832.73651.02462.39432.93512.55083.02401.6241

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.685 C1 N2 H7 108.685
C1 N3 H8 108.685 C1 N3 H9 108.685
N2 C1 N3 119.072 N2 C1 H4 107.577
N2 C1 H5 107.577 N3 C1 H4 107.577
N3 C1 H5 107.577 H4 C1 H5 106.884
H6 N2 H7 104.854 H8 N3 H9 104.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability