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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCSD=FULL/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 CCSD=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-150.836215
Energy at 298.15K-150.844198
HF Energy-150.272044
Nuclear repulsion energy82.725170
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3492 3492 1.69      
2 A1 3077 3077 33.45      
3 A1 1665 1665 39.80      
4 A1 1491 1491 0.09      
5 A1 1107 1107 33.46      
6 A1 866 866 1.39      
7 A1 453 453 2.96      
8 A2 3581 3581 0.00      
9 A2 1400 1400 0.00      
10 A2 1075 1075 0.00      
11 A2 251 251 0.00      
12 B1 3580 3580 0.68      
13 B1 3124 3124 25.98      
14 B1 1374 1374 0.51      
15 B1 853 853 0.97      
16 B1 376 376 82.96      
17 B2 3491 3491 3.25      
18 B2 1658 1658 6.60      
19 B2 1393 1393 22.32      
20 B2 1110 1110 79.22      
21 B2 808 808 340.28      

Unscaled Zero Point Vibrational Energy (zpe) 18112.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18112.4 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/aug-cc-pVDZ
ABC
1.16577 0.30027 0.27175

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.558
N2 0.000 1.265 -0.185
N3 0.000 -1.265 -0.185
H4 0.887 0.000 1.211
H5 -0.887 0.000 1.211
H6 0.818 1.321 -0.793
H7 -0.818 1.321 -0.793
H8 -0.818 -1.321 -0.793
H9 0.818 -1.321 -0.793

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46731.46731.10171.10172.05872.05872.05872.0587
N21.46732.53032.08272.08271.02071.02072.77932.7793
N31.46732.53032.08272.08272.77932.77931.02071.0207
H41.10172.08272.08271.77392.40122.94432.94432.4012
H51.10172.08272.08271.77392.94432.40122.40122.9443
H62.05871.02072.77932.40122.94431.63633.10702.6412
H72.05871.02072.77932.94432.40121.63632.64123.1070
H82.05872.77931.02072.94432.40123.10702.64121.6363
H92.05872.77931.02072.40122.94432.64123.10701.6363

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.391 C1 N2 H7 110.391
C1 N3 H8 110.391 C1 N3 H9 110.391
N2 C1 N3 119.139 N2 C1 H4 107.483
N2 C1 H5 107.483 N3 C1 H4 107.483
N3 C1 H5 107.483 H4 C1 H5 107.241
H6 N2 H7 106.565 H8 N3 H9 106.565
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability