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- W3022384787 endingPage "461" @default.
- W3022384787 startingPage "363" @default.
- W3022384787 abstract "This chapter begins with an explanation of heterophospholes as five-membered 6 π-systems. It discusses the six ring systems with just one heteroatom in addition to phosphorus and adjacent or non-adjacent to it, the 1,2- and 1,3-azaphospholes, the 1,2- and 1,3-oxaphospholes and the 1,2- and 1,3-thiaphospholes. The remaining 42 systems with two and more heteroatoms besides phosphorus are also considered. A heterophosphole may also contain a second two-coordinate phosphorus atom in the ring. The resulting aza- and thiadiphospholes, diazadiphospholes, azaphosphaarsoles and azaphosphastiboles are covered in the chapter. If phosphorus atoms are the only heteroatoms (possibly together with an arsenic or antimony atom) the five-membered ring as a rule must be negatively charged to establish a 671-system. 1, 2- and 1,3-Diphospholides are discussed together with the other ring systems with two adjacent and non-adjacent heteroatoms. In phospholes that contain more than one two-coordinate phosphorus atoms in the ring, the three-coordinate phosphorus atom attains planarity more easily and consequently even neutral oligophospholes may be aromatic. Oligophospholes and oligophospholides with three, four and five phosphorus atoms are described. A brief summary of the history of heterophospholes is also provided." @default.
- W3022384787 created "2020-05-13" @default.
- W3022384787 creator A5076220878 @default.
- W3022384787 date "2001-01-01" @default.
- W3022384787 modified "2023-10-16" @default.
- W3022384787 title "Heterophospholes" @default.
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