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Chemical compound From Wikipedia, the free encyclopedia
Lithium diphenylphosphide contains lithium and the organophosphorus anion with the formula (C6H5)2PLi. It is an air-sensitive solid that is used in the preparation of diphenylphosphino compounds. As an ether complex, the lithium salt is dark red.
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Preferred IUPAC name
Lithium diphenylphosphanide | |
Identifiers | |
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Properties | |
C12H10LiP | |
Molar mass | 192.13 g·mol−1 |
Appearance | pale yellow solid |
Reacts with water | |
Solubility | Ethers, hydrocarbons |
Hazards | |
GHS labelling: | |
Danger | |
H302, H312, H314, H332, H410 | |
P260, P261, P264, P270, P271, P273, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P363, P391, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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The lithium, sodium, and potassium salts are prepared by reduction of chlorodiphenylphosphine,[1] triphenylphosphine,[2][3] or tetraphenyldiphosphine with alkali metals (M):
They can also be obtained by deprotonation of diphenylphosphine.
With water, the salts convert to diphenylphosphine:[3]
With halocarbons, the salts react to give tertiary phosphines:[4]
When treated with metal halides, lithium diphenylphosphide gives transition metal phosphido complexes.
Although treated as salts, alkali diphenylphosphides are highly aggregated in solution. They adopt polymeric structures as solids.
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