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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: B3LYPultrafine/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYPultrafine/cc-pVTZ
 hartrees
Energy at 0K-151.276152
Energy at 298.15K-151.284121
HF Energy-151.276152
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.107967
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 B3LYPultrafine/cc-pVTZ
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 3480 3364 1.93      
2 A1 3044 2943 39.33      
3 A1 1665 1610 39.69      
4 A1 1490 1441 0.09      
5 A1 1088 1052 36.76      
6 A1 840 812 1.86      
7 A1 454 438 2.90      
8 A2 3562 3444 0.00      
9 A2 1397 1350 0.00      
10 A2 1073 1037 0.00      
11 A2 256 248 0.00      
12 B1 3561 3442 0.07      
13 B1 3080 2978 27.24      
14 B1 1368 1323 0.29      
15 B1 849 821 0.14      
16 B1 386 373 78.94      
17 B2 3481 3365 0.85      
18 B2 1654 1599 4.12      
19 B2 1390 1344 16.75      
20 B2 1058 1022 70.84      
21 B2 780 754 427.90      

Unscaled Zero Point Vibrational Energy (zpe) 17977.4 cm-1
Scaled (by 0.9667) Zero Point Vibrational Energy (zpe) 17378.7 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 B3LYPultrafine/cc-pVTZ
ABC
1.18875 0.30101 0.27310

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.551
N2 0.000 1.262 -0.184
N3 0.000 -1.262 -0.184
H4 0.877 0.000 1.200
H5 -0.877 0.000 1.200
H6 0.815 1.333 -0.782
H7 -0.815 1.333 -0.782
H8 -0.815 -1.333 -0.782
H9 0.815 -1.333 -0.782

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46071.46071.09071.09072.05402.05402.05402.0540
N21.46072.52422.06832.06831.01351.01352.78522.7852
N31.46072.52422.06832.06832.78522.78521.01351.0135
H41.09072.06832.06831.75322.38942.92722.92722.3894
H51.09072.06832.06831.75322.92722.38942.38942.9272
H62.05401.01352.78522.38942.92721.63103.12552.6662
H72.05401.01352.78522.92722.38941.63102.66623.1255
H82.05402.78521.01352.92722.38943.12552.66621.6310
H92.05402.78521.01352.38942.92722.66623.12551.6310

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.939 C1 N2 H7 110.939
C1 N3 H8 110.939 C1 N3 H9 110.939
N2 C1 N3 119.548 N2 C1 H4 107.432
N2 C1 H5 107.432 N3 C1 H4 107.432
N3 C1 H5 107.432 H4 C1 H5 106.965
H6 N2 H7 107.145 H8 N3 H9 107.145
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.028      
2 N -0.314      
3 N -0.314      
4 H 0.095      
5 H 0.095      
6 H 0.117      
7 H 0.117      
8 H 0.117      
9 H 0.117      


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 -1.768 1.768
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.020 0.000 0.000
y 0.000 -25.813 0.000
z 0.000 0.000 -18.506
Traceless
 xyz
x 5.140 0.000 0.000
y 0.000 -8.050 0.000
z 0.000 0.000 2.911
Polar
3z2-r25.821
x2-y28.793
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.439 0.000 0.000
y 0.000 4.965 0.000
z 0.000 0.000 4.511


<r2> (average value of r2) Å2
<r2> 54.000
(<r2>)1/2 7.348