THE STRUCTURE AND PROPERTIES OF INORGANIC POLYMERIC PHOSPHATES
THE STRUCTURE AND PROPERTIES OF INORGANIC POLYMERIC PHOSPHATES
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DOI:
10.1002/pi.4980110402
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发表时间:
1979-01-01
期刊:
影响因子:
--
通讯作者:
RAY, NH
中科院分区:
文献类型:
--
作者:
RAY, NH
Some of the oldest inorganic polymers are polyphosphates, and the synthesis of sodium polyphosphate by Thomas Graham in 1833 1 pre-dates the discovery of any synthetic organic polymer by nearly a century. The first crystalline polymer to be synthesised was described by Tamman in 1892, 2 who named it Kurrol's salt in recognition of his collaborator of that name. However, even though Fleitmann and Hennenberg 3 postulated the existence of a homologous series of long-chain polyphosphates as early as 1845, these compounds were not universally recognised as high-molecular weight polymers until about 1940, when the advent of modern techniques made it possible to demonstrate that their solutions contain anions having several thousands of phosphorus atoms linked together through~ xygen.~ The structural unit 1 from which the majority of polyphosphates are derived is tetrahedral but only 3-connective, since the fourth oxygen atom is not available for linking to another atom except by utilising both of the remaining electrons on that oxygen. Such linkages are formed in compounds with