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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-150.796767
Energy at 298.15K-150.804809
HF Energy-150.261570
Counterpoise corrected energy-150.796767
CP Energy at 298.15K-150.804809
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.135554
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 CCD/6-31+G**
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 3581 3374 0.36      
2 A1 3143 2962 33.72      
3 A1 1718 1619 67.30      
4 A1 1545 1455 0.01      
5 A1 1124 1059 43.31      
6 A1 887 836 5.05      
7 A1 465 439 3.41      
8 A2 3682 3469 0.00      
9 A2 1431 1348 0.00      
10 A2 1094 1031 0.00      
11 A2 265 250 0.00      
12 B1 3680 3468 2.06      
13 B1 3199 3014 27.81      
14 B1 1408 1327 0.03      
15 B1 865 815 1.50      
16 B1 398 375 105.66      
17 B2 3581 3374 1.27      
18 B2 1709 1610 5.25      
19 B2 1436 1353 29.15      
20 B2 1131 1066 95.64      
21 B2 817 769 414.66      

Unscaled Zero Point Vibrational Energy (zpe) 18577.7 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 17505.8 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 CCD/6-31+G**
ABC
1.18502 0.30173 0.27374

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.553
N2 0.000 1.260 -0.186
N3 0.000 -1.260 -0.186
H4 0.879 0.000 1.198
H5 -0.879 0.000 1.198
H6 0.818 1.335 -0.779
H7 -0.818 1.335 -0.779
H8 -0.818 -1.335 -0.779
H9 0.818 -1.335 -0.779

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46051.46051.08981.08982.05582.05582.05582.0558
N21.46052.51922.06722.06721.01351.01352.78422.7842
N31.46052.51922.06722.06722.78422.78421.01351.0135
H41.08982.06722.06721.75792.38592.92742.92742.3859
H51.08982.06722.06721.75792.92742.38592.38592.9274
H62.05581.01352.78422.38592.92741.63663.13112.6693
H72.05581.01352.78422.92742.38591.63662.66933.1311
H82.05582.78421.01352.92742.38593.13112.66931.6366
H92.05582.78421.01352.38592.92742.66933.13111.6366

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.110 C1 N2 H7 111.110
C1 N3 H8 111.110 C1 N3 H9 111.110
N2 C1 N3 119.185 N2 C1 H4 107.412
N2 C1 H5 107.412 N3 C1 H4 107.412
N3 C1 H5 107.412 H4 C1 H5 107.512
H6 N2 H7 107.689 H8 N3 H9 107.689
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability