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

using model chemistry: CCSD(T)=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no    
1 2 no    

Conformer 1 ()

Jump to S1C2
Energy calculated at CCSD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-113.001228
Energy at 298.15K 
HF Energy-112.442794
Nuclear repulsion energy40.357705
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 CCSD(T)=FULL/aug-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 Ag 3595 3464        
2 Ag 3486 3359        
3 Ag 1681 1620        
4 Ag 1091 1052        
5 Ag 437 421        
6 Ag 141 136        
7 Au 3607 3476        
8 Au 1690 1629        
9 Au 210 202        
10 Au 55 53        
11 Bg 3607 3476        
12 Bg 1681 1620        
13 Bg 83 80        
14 Bu 3595 3465        
15 Bu 3490 3363        
16 Bu 1661 1600        
17 Bu 1063 1025        
18 Bu 61i 59i        

Unscaled Zero Point Vibrational Energy (zpe) 15555.6 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 14990.9 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 CCSD(T)=FULL/aug-cc-pVTZ
ABC
4.61925 0.18612 0.18278

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.682 0.825 0.000
N2 0.000 1.575 0.000
N3 0.000 -1.575 0.000
H4 0.191 2.150 0.811
H5 0.191 2.150 -0.811
H6 -0.682 -0.825 0.000
H7 -0.191 -2.150 -0.811
H8 -0.191 -2.150 0.811

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.01372.49561.62911.62912.14183.20503.2050
N21.01373.15021.01221.01222.49563.81703.8170
N32.49563.15023.81703.81701.01371.01221.0122
H41.62911.01223.81701.62223.20504.61134.3165
H51.62911.01223.81701.62223.20504.31654.6113
H62.14182.49561.01373.20503.20501.62911.6291
H73.20503.81701.01224.61134.31651.62911.6222
H83.20503.81701.01224.31654.61131.62911.6222

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 107.046 H1 N2 H5 107.046
H1 H3 N6 58.173 H1 H3 H7 126.702
H1 H3 H8 126.702 N2 H1 H3 121.827
H4 N2 H5 106.516 N6 H3 H7 107.046
N6 H3 H8 107.046 H7 H3 H8 106.516
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 ()

Jump to S1C1
Energy calculated at CCSD(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-113.001595
Energy at 298.15K 
HF Energy-112.442963
Nuclear repulsion energy39.802760
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 CCSD(T)=FULL/aug-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 A' 3606 3475        
2 A' 3574 3444        
3 A' 3496 3369        
4 A' 3472 3346        
5 A' 1679 1618        
6 A' 1667 1607        
7 A' 1090 1051        
8 A' 1079 1040        
9 A' 391 377        
10 A' 148 142        
11 A' 87 83        
12 A" 3607 3476        
13 A" 3602 3471        
14 A" 1703 1641        
15 A" 1674 1613        
16 A" 267 258        
17 A" 119 115        
18 A" 51i 49i        

Unscaled Zero Point Vibrational Energy (zpe) 15604.7 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 15038.2 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 CCSD(T)=FULL/aug-cc-pVTZ
ABC
3.94533 0.17507 0.17321

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.123 0.690 0.000
N2 -0.035 1.693 0.000
N3 -0.035 -1.561 0.000
H4 0.442 2.068 0.810
H5 0.442 2.068 -0.810
H6 -1.047 -1.576 0.000
H7 0.264 -2.086 -0.812
H8 0.264 -2.086 0.812

Atom - Atom Distances (Å)
  H1 N2 N3 H4 H5 H6 H7 H8
H11.01502.25691.63011.63012.55052.89632.8963
N21.01503.25401.01261.01263.42203.87703.8770
N32.25693.25403.74903.74901.01271.01231.0123
H41.63011.01263.74901.62094.01924.46354.1581
H51.63011.01263.74901.62094.01924.15814.4635
H62.55053.42201.01274.01924.01921.62481.6248
H72.89633.87701.01234.46354.15811.62481.6242
H82.89633.87701.01234.15814.46351.62481.6242

picture of Ammonia Dimer state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 N2 H4 107.018 H1 N2 H5 107.018
H1 H3 N6 94.845 H1 H3 H7 119.794
H1 H3 H8 119.794 N2 H1 H3 167.043
H4 N2 H5 106.328 N6 H3 H7 106.724
N6 H3 H8 106.724 H7 H3 H8 106.690
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability