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All results from a given calculation for NH3NH3 (Ammonia Dimer)

using model chemistry: B1B95/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
Energy calculated at B1B95/CEP-31G
 hartrees
Energy at 0K-23.338346
Energy at 298.15K-23.343462
HF Energy-23.338346
Nuclear repulsion energy27.953293
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 B1B95/CEP-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3779 3618 0.00      
2 Ag 3563 3412 0.00      
3 Ag 1660 1590 0.00      
4 Ag 815 780 0.00      
5 Ag 464 444 0.00      
6 Ag 135 129 0.00      
7 Au 3808 3646 13.34      
8 Au 1690 1618 88.90      
9 Au 255 244 76.62      
10 Au 104 99 23.81      
11 Bg 3808 3646 0.00      
12 Bg 1662 1592 0.00      
13 Bg 139 133 0.00      
14 Bu 3778 3617 73.76      
15 Bu 3571 3419 27.09      
16 Bu 1651 1580 83.14      
17 Bu 632 605 1310.13      
18 Bu 47 45 225.47      

Unscaled Zero Point Vibrational Energy (zpe) 15779.3 cm-1
Scaled (by 0.9575) Zero Point Vibrational Energy (zpe) 15108.7 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 B1B95/CEP-31G
ABC
4.46022 0.18358 0.17944

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/CEP-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.642 0.807 0.000
N2 0.000 1.595 0.000
N3 0.000 -1.595 0.000
H4 -0.036 2.137 0.855
H5 -0.036 2.137 -0.855
H6 -0.642 -0.807 0.000
H7 0.036 -2.137 -0.855
H8 0.036 -2.137 0.855

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.01622.48701.72011.72012.06323.12533.1253
N21.01623.19041.01311.01312.48703.82903.8290
N32.48703.19043.82903.82901.01621.01311.0131
H41.72011.01313.82901.71073.12534.60394.2743
H51.72011.01313.82901.71073.12534.27434.6039
H62.06322.48701.01623.12533.12531.72011.7201
H73.12533.82901.01314.60394.27431.72011.7107
H83.12533.82901.01314.27434.60391.72011.7107

picture of Ammonia Dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 N2 H4 115.909 H1 N2 H5 115.909
H1 H3 N6 54.140 H1 H3 H7 120.485
H1 H3 H8 120.485 N2 H1 H3 125.860
H4 N2 H5 115.201 N6 H3 H7 115.909
N6 H3 H8 115.909 H7 H3 H8 115.201
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.296      
2 N -0.818      
3 N -0.818      
4 H 0.261      
5 H 0.261      
6 H 0.296      
7 H 0.261      
8 H 0.261      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.102 1.493 0.000
y 1.493 -8.696 0.000
z 0.000 0.000 -11.333
Traceless
 xyz
x -7.087 1.493 0.000
y 1.493 5.521 0.000
z 0.000 0.000 1.566
Polar
3z2-r23.132
x2-y2-8.405
xy1.493
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.285 -0.485 0.000
y -0.485 3.152 0.000
z 0.000 0.000 2.668


<r2> (average value of r2) Å2
<r2> 56.502
(<r2>)1/2 7.517