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All results from a given calculation for P2H4 (Diphosphine)

using model chemistry: MP2/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at MP2/TZVP
 hartrees
Energy at 0K-684.056460
Energy at 298.15K-684.061806
HF Energy-683.802377
Nuclear repulsion energy88.436958
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/TZVP
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 2498 2368 64.37      
2 A 2492 2362 31.40      
3 A 1161 1100 12.60      
4 A 900 853 0.01      
5 A 678 642 7.37      
6 A 459 435 0.58      
7 A 213 202 2.72      
8 B 2507 2376 104.40      
9 B 2482 2352 20.87      
10 B 1151 1091 27.57      
11 B 844 800 55.23      
12 B 639 605 12.51      

Unscaled Zero Point Vibrational Energy (zpe) 8011.0 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 7593.7 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/TZVP
ABC
2.20257 0.19245 0.19182

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 1.115 -0.086
P2 0.000 -1.115 -0.086
H3 -0.227 1.365 1.286
H4 1.404 1.239 0.007
H5 0.227 -1.365 1.286
H6 -1.404 -1.239 0.007

Atom - Atom Distances (Å)
  P1 P2 H3 H4 H5 H6
P12.22911.41331.41252.84332.7423
P22.22912.84332.74231.41331.4125
H31.41332.84332.07592.76783.1312
H41.41252.74232.07593.13123.7452
H52.84331.41332.76783.13122.0759
H62.74231.41253.13123.74522.0759

picture of Diphosphine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
P1 P2 H5 100.215 P1 P2 H6 95.064
P2 P1 H3 100.215 P2 P1 H4 95.064
H3 P1 H4 94.547 H5 P2 H6 94.547
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability