113687-11-9

Basic information

• Product Name: {Hg((C₆H₅)2PCH₂P(Se)(C₆H₅)2)2}⁽²⁺⁾
• CAS NO: 113687-11-9
• Molecular Weight: 1127.3
• Mol File: 113687-11-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: {Hg((C₆H₅)2PCH₂P(Se)(C₆H₅)2)2}⁽²⁺⁾(CAS DataBase Reference)
• NIST Chemistry Reference: {Hg((C₆H₅)2PCH₂P(Se)(C₆H₅)2)2}⁽²⁺⁾(113687-11-9)
• EPA Substance Registry System: {Hg((C₆H₅)2PCH₂P(Se)(C₆H₅)2)2}⁽²⁺⁾(113687-11-9)

Safety Data

• Hazardous Substances Data: 113687-11-9(Hazardous Substances Data)

Upstream product

• 113687-12-0 {Hg((C₆H₅)2P(Se)CH₂P(Se)(C₆H₅)2)2}⁽²⁺⁾ 
• 23176-19-4 (diphenylphosphinomethyl)diphenylphosphine selenide 

Downstream Products

• 113687-13-1 {Hg((C₆H₅)2PCH₂P(Se)(C₆H₅)2)((C₆H₅)2P(Se)CH₂P(Se)(C₆H₅)2)}⁽²⁺⁾ 

Relevant articles and documents

Multinuclear magnetic resonance (31P, 77Se, 199Hg) and electrochemical studies of nonlabile mercury(II) complexes with group 15/group 16 donor ligands

Multinuclear magnetic resonance (31P, 77Se, 199Hg) and electrochemical studies have been carried out on Hg(II) perchlorate complexes of Ph2PCH2P(E)Ph2 [E = S (dpmS), Se (dpmSe)] and Ph2P(E)CH2P(E)Ph2 [E = S (dpmS2), Se (dpmSe2)] as well as the free ligands. These studies were conducted in dichloromethane, acetonitrile, and acetone with all results being independent of solvent. In all cases a single complex, [Hg(dpmE)2]2+ or [Hg(dpmE2)2]2+, is formed, which is static at room temperature on the NMR time scale. Addition of excess ligand causes ligand exchange, but cooling slows the rate of ligand exchange, allowing observation of separate signals due to the mercury complex and free ligand. Coordination of selenium to mercury leads to a reduction of the phosphorus-selenium coupling constant relative to that in the free ligand, and mercury-selenium coupling is observed in some cases. Competitive exchange studies clearly show that mercury favors coordination to dpmE rather than dpmE2. The electrochemical reduction of both [Hg(dpmE)2]2+ and [Hg(dpmE2)2]2+ at a mercury electrode occurs via a Hg(I) intermediate as in [Hg(dpmE)2]2+ + Hg ? 2[Hg(dpmE)]+ and 2[Hg(dpmE)]+ + 2e- ? 2Hg + 2dpmE. With the dpmE complexes, the processes are both chemically and electrochemically reversible, but in marked contrast, the dpmE2 complexes exhibit chemical reversibility but electrochemical irreversibility, which is highly unusual for mercury complexes at a mercury electrode. This difference is explicable in terms of the preference of mercury for phosphorus rather than group 16 donor atoms. The reversible processes for the dpmE systems occur under conditions where both the mercury complex and the free ligand are present simultaneously at the electrode surface and mimic the NMR experiments where rapid exchange reactions occur. At platinum electrodes all the complexes are reduced to elemental mercury and free ligand in an overall irreversible two-electron process.