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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCSD=FULL/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 CCSD=FULL/cc-pVDZ
 hartrees
Energy at 0K-150.794732
Energy at 298.15K-150.802849
HF Energy-150.256284
Nuclear repulsion energy82.931264
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 CCSD=FULL/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 3486 3486 4.14      
2 A1 3085 3085 45.72      
3 A1 1677 1677 31.07      
4 A1 1498 1498 0.01      
5 A1 1151 1151 26.61      
6 A1 921 921 0.71      
7 A1 460 460 8.04      
8 A2 3571 3571 0.00      
9 A2 1416 1416 0.00      
10 A2 1096 1096 0.00      
11 A2 285 285 0.00      
12 B1 3570 3570 1.52      
13 B1 3137 3137 32.53      
14 B1 1396 1396 1.32      
15 B1 866 866 1.68      
16 B1 416 416 90.45      
17 B2 3487 3487 0.00      
18 B2 1671 1671 1.23      
19 B2 1407 1407 33.51      
20 B2 1133 1133 60.08      
21 B2 882 882 345.00      

Unscaled Zero Point Vibrational Energy (zpe) 18305.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18305.1 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 CCSD=FULL/cc-pVDZ
ABC
1.16042 0.30422 0.27431

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/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 1.216
H5 -0.887 0.000 1.216
H6 0.812 1.275 -0.807
H7 -0.812 1.275 -0.807
H8 -0.812 -1.275 -0.807
H9 0.812 -1.275 -0.807

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46411.46411.10391.10392.03772.03772.03772.0377
N21.46412.52442.08262.08261.02451.02452.73622.7362
N31.46412.52442.08262.08262.73622.73621.02451.0245
H41.10392.08262.08261.77392.39302.93382.93382.3930
H51.10392.08262.08261.77392.93382.39302.39302.9338
H62.03771.02452.73622.39302.93381.62393.02312.5499
H72.03771.02452.73622.93382.39301.62392.54993.0231
H82.03772.73621.02452.93382.39303.02312.54991.6239
H92.03772.73621.02452.39302.93382.54993.02311.6239

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.645 C1 N2 H7 108.645
C1 N3 H8 108.645 C1 N3 H9 108.645
N2 C1 N3 119.106 N2 C1 H4 107.558
N2 C1 H5 107.558 N3 C1 H4 107.558
N3 C1 H5 107.558 H4 C1 H5 106.928
H6 N2 H7 104.846 H8 N3 H9 104.846
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability