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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: HSEh1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HSEh1PBE/TZVP
 hartrees
Energy at 0K-151.101481
Energy at 298.15K-151.109470
HF Energy-151.101481
Nuclear repulsion energy83.387010
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 HSEh1PBE/TZVP
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 3530 3389 0.09      
2 A1 3072 2949 37.00      
3 A1 1674 1607 57.59      
4 A1 1480 1421 0.93      
5 A1 1097 1053 42.52      
6 A1 843 809 9.96      
7 A1 460 442 2.49      
8 A2 3622 3477 0.00      
9 A2 1404 1348 0.00      
10 A2 1077 1034 0.00      
11 A2 260 250 0.00      
12 B1 3620 3475 1.26      
13 B1 3115 2991 25.84      
14 B1 1372 1317 0.05      
15 B1 851 817 0.22      
16 B1 399 383 92.95      
17 B2 3531 3390 0.78      
18 B2 1663 1597 6.88      
19 B2 1398 1342 20.98      
20 B2 1097 1053 96.37      
21 B2 753 723 446.93      

Unscaled Zero Point Vibrational Energy (zpe) 18158.1 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 17433.6 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 HSEh1PBE/TZVP
ABC
1.19866 0.30317 0.27555

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.545
N2 0.000 1.255 -0.184
N3 0.000 -1.255 -0.184
H4 0.875 0.000 1.199
H5 -0.875 0.000 1.199
H6 0.818 1.342 -0.774
H7 -0.818 1.342 -0.774
H8 -0.818 -1.342 -0.774
H9 0.818 -1.342 -0.774

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45141.45141.09261.09262.05212.05212.05212.0521
N21.45142.50962.06262.06261.01231.01232.78602.7860
N31.45142.50962.06262.06262.78602.78601.01231.0123
H41.09262.06262.06261.75102.38682.92612.92612.3868
H51.09262.06262.06261.75102.92612.38682.38682.9261
H62.05211.01232.78602.38682.92611.63663.14412.6846
H72.05211.01232.78602.92612.38681.63662.68463.1441
H82.05212.78601.01232.92612.38683.14412.68461.6366
H92.05212.78601.01232.38682.92612.68463.14411.6366

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.554 C1 N2 H7 111.554
C1 N3 H8 111.554 C1 N3 H9 111.554
N2 C1 N3 119.655 N2 C1 H4 107.501
N2 C1 H5 107.501 N3 C1 H4 107.501
N3 C1 H5 107.501 H4 C1 H5 106.498
H6 N2 H7 107.874 H8 N3 H9 107.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.219      
2 N -0.409      
3 N -0.409      
4 H 0.142      
5 H 0.142      
6 H 0.188      
7 H 0.188      
8 H 0.188      
9 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.965 1.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.736 0.000 0.000
y 0.000 -26.241 0.000
z 0.000 0.000 -18.480
Traceless
 xyz
x 5.625 0.000 0.000
y 0.000 -8.634 0.000
z 0.000 0.000 3.009
Polar
3z2-r26.017
x2-y29.506
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.310 0.000 0.000
y 0.000 4.819 0.000
z 0.000 0.000 4.331


<r2> (average value of r2) Å2
<r2> 53.785
(<r2>)1/2 7.334