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

using model chemistry: MP2_cp_opt/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-132.788853
Energy at 298.15K-132.793133
Nuclear repulsion energy11.957547
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/6-311+G(3df,2pd)
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' 3954 3757 86.23      
2 A' 3668 3484 29.11      
3 A' 3666 3482 511.03      
4 A' 3521 3345 0.49      
5 A' 1671 1587 4.65      
6 A' 1660 1577 56.23      
7 A' 1082 1028 160.09      
8 A' 440 418 88.30      
9 A' 188 179 28.72      
10 A' 157 149 32.55      
11 A" 3664 3481 18.44      
12 A" 1662 1579 19.54      
13 A" 690 656 104.06      
14 A" 171 163 49.29      
15 A" 22 21 68.13      

Unscaled Zero Point Vibrational Energy (zpe) 13108.5 cm-1
Scaled (by 0.95) Zero Point Vibrational Energy (zpe) 12453.1 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/6-311+G(3df,2pd)
ABC
5.00741 0.20762 0.20585

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2_cp_opt/6-311+G(3df,2pd)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.083 0.603 0.000
O2 -0.037 1.566 0.000
N3 -0.037 -1.396 0.000
H4 0.852 1.921 0.000
H5 0.785 -1.985 0.000
H6 -0.584 -1.648 0.813
H7 -0.584 -1.648 -0.813

Atom - Atom Distances (Å)
  H1 O2 N3 H4 H5 H6 H7
H10.97072.00191.52592.68122.48432.4843
O20.97072.96150.95743.64483.36003.3600
N32.00192.96153.43331.01171.01201.0120
H41.52590.95743.43333.90603.93163.9316
H52.68123.64481.01173.90601.62761.6276
H62.48433.36001.01203.93161.62761.6270
H72.48433.36001.01203.93161.62761.6270

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 104.629 H1 N3 H5 122.188
H1 N3 H6 106.339 H1 N3 H7 106.339
O2 H1 N3 169.449 H5 N3 H6 107.082
H5 N3 H7 107.082 H6 N3 H7 106.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability