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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: QCISD(T)/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 QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-150.846418
Energy at 298.15K-150.854366
HF Energy-150.271169
Nuclear repulsion energy82.435369
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 QCISD(T)/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 3450 3374        
2 A1 3050 2982        
3 A1 1647 1610        
4 A1 1473 1441        
5 A1 1093 1069        
6 A1 852 833        
7 A1 445 435        
8 A2 3542 3464        
9 A2 1384 1353        
10 A2 1063 1040        
11 A2 248 243        
12 B1 3541 3462        
13 B1 3098 3029        
14 B1 1359 1329        
15 B1 842 824        
16 B1 371 363        
17 B2 3451 3374        
18 B2 1639 1603        
19 B2 1373 1342        
20 B2 1085 1061        
21 B2 803 786        

Unscaled Zero Point Vibrational Energy (zpe) 17905.1 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 17507.6 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 QCISD(T)/aug-cc-pVDZ
ABC
1.15918 0.29792 0.26966

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.560
N2 0.000 1.271 -0.185
N3 0.000 -1.271 -0.185
H4 0.890 0.000 1.213
H5 -0.890 0.000 1.213
H6 0.820 1.320 -0.797
H7 -0.820 1.320 -0.797
H8 -0.820 -1.320 -0.797
H9 0.820 -1.320 -0.797

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47331.47331.10461.10462.06292.06292.06292.0629
N21.47332.54232.08922.08921.02411.02412.78582.7858
N31.47332.54232.08922.08922.78582.78581.02411.0241
H41.10462.08922.08921.78072.40622.95112.95112.4062
H51.10462.08922.08921.78072.95112.40622.40622.9511
H62.06291.02412.78582.40622.95111.63933.10772.6402
H72.06291.02412.78582.95112.40621.63932.64023.1077
H82.06292.78581.02412.95112.40623.10772.64021.6393
H92.06292.78581.02412.40622.95112.64023.10771.6393

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.082 C1 N2 H7 110.082
C1 N3 H8 110.082 C1 N3 H9 110.082
N2 C1 N3 119.260 N2 C1 H4 107.411
N2 C1 H5 107.411 N3 C1 H4 107.411
N3 C1 H5 107.411 H4 C1 H5 107.427
H6 N2 H7 106.333 H8 N3 H9 106.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability