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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCSD(T)/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)/cc-pVDZ
 hartrees
Energy at 0K-150.801864
Energy at 298.15K-150.809961
HF Energy-150.255415
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.708557
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)/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 3448 3375        
2 A1 3063 2998        
3 A1 1662 1626        
4 A1 1483 1452        
5 A1 1146 1122        
6 A1 910 891        
7 A1 453 443        
8 A2 3535 3460        
9 A2 1403 1373        
10 A2 1087 1064        
11 A2 285 279        
12 B1 3533 3458        
13 B1 3115 3049        
14 B1 1386 1356        
15 B1 857 839        
16 B1 414 406        
17 B2 3448 3375        
18 B2 1655 1620        
19 B2 1390 1361        
20 B2 1113 1090        
21 B2 883 864        

Unscaled Zero Point Vibrational Energy (zpe) 18134.2 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 17749.7 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)/cc-pVDZ
ABC
1.15463 0.30255 0.27276

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.561
N2 0.000 1.267 -0.183
N3 0.000 -1.267 -0.183
H4 0.890 0.000 1.218
H5 -0.890 0.000 1.218
H6 0.813 1.269 -0.812
H7 -0.813 1.269 -0.812
H8 -0.813 -1.269 -0.812
H9 0.813 -1.269 -0.812

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46911.46911.10631.10632.03862.03862.03862.0386
N21.46912.53422.08792.08791.02771.02772.73682.7368
N31.46912.53422.08792.08792.73682.73681.02771.0277
H41.10632.08792.08791.77982.39542.93782.93782.3954
H51.10632.08792.08791.77982.93782.39542.39542.9378
H62.03861.02772.73682.39542.93781.62513.01452.5389
H72.03861.02772.73682.93782.39541.62512.53893.0145
H82.03862.73681.02772.93782.39543.01452.53891.6251
H92.03862.73681.02772.39542.93782.53893.01451.6251

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.169 C1 N2 H7 108.169
C1 N3 H8 108.169 C1 N3 H9 108.169
N2 C1 N3 119.197 N2 C1 H4 107.497
N2 C1 H5 107.497 N3 C1 H4 107.497
N3 C1 H5 107.497 H4 C1 H5 107.102
H6 N2 H7 104.494 H8 N3 H9 104.494
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability