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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCSD(T)=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(T)=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-150.854108
Energy at 298.15K-150.862060
HF Energy-150.271416
Nuclear repulsion energy82.516200
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(T)=FULL/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 3455 3356        
2 A1 3055 2967        
3 A1 1649 1602        
4 A1 1476 1433        
5 A1 1095 1064        
6 A1 853 829        
7 A1 446 433        
8 A2 3548 3446        
9 A2 1387 1347        
10 A2 1064 1034        
11 A2 248 241        
12 B1 3547 3444        
13 B1 3103 3014        
14 B1 1361 1322        
15 B1 844 820        
16 B1 372 361        
17 B2 3456 3356        
18 B2 1641 1594        
19 B2 1376 1336        
20 B2 1089 1057        
21 B2 802 779        

Unscaled Zero Point Vibrational Energy (zpe) 17934.0 cm-1
Scaled (by 0.9712) Zero Point Vibrational Energy (zpe) 17417.5 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 CCSD(T)=FULL/aug-cc-pVDZ
ABC
1.16143 0.29853 0.27022

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-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 1.270 -0.185
N3 0.000 -1.270 -0.185
H4 0.889 0.000 1.212
H5 -0.889 0.000 1.212
H6 0.819 1.320 -0.796
H7 -0.819 1.320 -0.796
H8 -0.819 -1.320 -0.796
H9 0.819 -1.320 -0.796

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47171.47171.10351.10352.06132.06132.06132.0613
N21.47172.53942.08722.08721.02321.02322.78382.7838
N31.47172.53942.08722.08722.78382.78381.02321.0232
H41.10352.08722.08721.77842.40452.94872.94872.4045
H51.10352.08722.08721.77842.94872.40452.40452.9487
H62.06131.02322.78382.40452.94871.63843.10652.6393
H72.06131.02322.78382.94872.40451.63842.63933.1065
H82.06132.78381.02322.94872.40453.10652.63931.6384
H92.06132.78381.02322.40452.94872.63933.10651.6384

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.126 C1 N2 H7 110.126
C1 N3 H8 110.126 C1 N3 H9 110.126
N2 C1 N3 119.257 N2 C1 H4 107.424
N2 C1 H5 107.424 N3 C1 H4 107.424
N3 C1 H5 107.424 H4 C1 H5 107.368
H6 N2 H7 106.374 H8 N3 H9 106.374
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability