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All results from a given calculation for H2ONH3 (Water Ammonia Dimer)

using model chemistry: MP2_cp_opt/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2_cp_opt/3-21G
 hartrees
Energy at 0K-131.702886
Energy at 298.15K-131.707529
Nuclear repulsion energy11.831619
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 MP2_cp_opt/3-21G
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' 3603 3439 28.89      
2 A' 3575 3413 0.11      
3 A' 3428 3272 1.29      
4 A' 3330 3179 306.23      
5 A' 1798 1716 21.61      
6 A' 1790 1708 67.18      
7 A' 1096 1047 281.10      
8 A' 517 493 132.86      
9 A' 239 228 54.68      
10 A' 210 201 5.42      
11 A" 3574 3412 0.28      
12 A" 1796 1714 17.80      
13 A" 812 775 270.86      
14 A" 245 234 36.75      
15 A" 14 14 89.82      

Unscaled Zero Point Vibrational Energy (zpe) 13013.8 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 12421.7 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 MP2_cp_opt/3-21G
ABC
4.66946 0.20679 0.20475

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.005 0.573 0.000
O2 -0.040 1.575 0.000
N3 -0.040 -1.403 0.000
H4 0.903 1.869 0.000
H5 0.851 -1.903 0.000
H6 -0.573 -1.658 0.833
H7 -0.573 -1.658 -0.833

Atom - Atom Distances (Å)
  H1 O2 N3 H4 H5 H6 H7
H11.00271.97651.58282.61972.44812.4481
O21.00272.97830.98833.59033.38083.3808
N31.97652.97833.40541.02131.02151.0215
H41.58280.98833.40543.77223.91303.9130
H52.61973.59031.02133.77221.66781.6678
H62.44813.38081.02153.91301.66781.6670
H72.44813.38081.02153.91301.66781.6670

picture of Water Ammonia Dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 105.306 H1 N3 H5 118.288
H1 N3 H6 104.968 H1 N3 H7 104.968
O2 H1 N3 177.008 H5 N3 H6 109.456
H5 N3 H7 109.456 H6 N3 H7 109.360
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability