Skeletal stabilization: A basis for new classes of cyclophosphazanes

Robert M. Hands; Monte Helm; Bruce Noll; Arlan D. Norman

Skeletal stabilization: A basis for new classes of cyclophosphazanes

Robert M. Hands, Monte Helm, Bruce Noll, Arlan D. Norman

Pacific Northwest National Laboratory

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Reactions involving skeletally stabilized intermediate phosphazanes yield new cyclophosphazanes. Thermolysis of C₆H₄(NH)₂PPh (9) yields (PhP)₄ and the λ⁵ phosphazane [C₆H₄(NH)₂]₂PPh (10); 10 upon cyclocondensation with PhPCl₂ yields cis,trans- and cis,cis- spiro λ³-λ⁵-λ³ phosphazanes [C₆H₄(N)₂PPh]₂PPh (12). Reaction of the bis(silyl) cyclophosphazane C₆H₄(NSiMe₃)₂PPh with PhPCl₂ yields triphosphazane C₆H₄[NP(Ph)Cl]₂PPh (13); 13 with 1,2-(NH₂)₂C₆H₄ forms cyclotriphosphazane C₆H₄(N₂PPh)(PPh)₂C₆H ₄(NH)₂ (14). 14 is the key intermediate in formation of several new [(C₆H₄N₂PPh)]₂-(PPh)(PR) (R = Ph, Me) cleft-containing cyclotetraphosphazanes (17). Synthesis and structural characterization of the new phosphazanes are described.

Original language	English
Pages (from-to)	285-293
Number of pages	9
Journal	Phosphorus, Sulfur and Silicon and the Related Elements
Volume	124
Publication status	Published - 1997

Keywords

Cyclophosphazanes
Phosphazanes
Triphosphazanes, tetraphosphazanes, aminophosphines

ASJC Scopus subject areas

Inorganic Chemistry

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title = "Skeletal stabilization: A basis for new classes of cyclophosphazanes",

abstract = "Reactions involving skeletally stabilized intermediate phosphazanes yield new cyclophosphazanes. Thermolysis of C6H4(NH)2PPh (9) yields (PhP)4 and the λ5 phosphazane [C6H4(NH)2]2PPh (10); 10 upon cyclocondensation with PhPCl2 yields cis,trans- and cis,cis- spiro λ3-λ5-λ3 phosphazanes [C6H4(N)2PPh]2PPh (12). Reaction of the bis(silyl) cyclophosphazane C6H4(NSiMe3)2PPh with PhPCl2 yields triphosphazane C6H4[NP(Ph)Cl]2PPh (13); 13 with 1,2-(NH2)2C6H4 forms cyclotriphosphazane C6H4(N2PPh)(PPh)2C6H 4(NH)2 (14). 14 is the key intermediate in formation of several new [(C6H4N2PPh)]2-(PPh)(PR) (R = Ph, Me) cleft-containing cyclotetraphosphazanes (17). Synthesis and structural characterization of the new phosphazanes are described.",

keywords = "Cyclophosphazanes, Phosphazanes, Triphosphazanes, tetraphosphazanes, aminophosphines",

author = "Hands, {Robert M.} and Monte Helm and Bruce Noll and Norman, {Arlan D.}",

year = "1997",

language = "English",

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journal = "Phosphorus, Sulfur and Silicon and the Related Elements",

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T2 - A basis for new classes of cyclophosphazanes

AU - Hands, Robert M.

AU - Helm, Monte

AU - Noll, Bruce

AU - Norman, Arlan D.

PY - 1997

Y1 - 1997

N2 - Reactions involving skeletally stabilized intermediate phosphazanes yield new cyclophosphazanes. Thermolysis of C6H4(NH)2PPh (9) yields (PhP)4 and the λ5 phosphazane [C6H4(NH)2]2PPh (10); 10 upon cyclocondensation with PhPCl2 yields cis,trans- and cis,cis- spiro λ3-λ5-λ3 phosphazanes [C6H4(N)2PPh]2PPh (12). Reaction of the bis(silyl) cyclophosphazane C6H4(NSiMe3)2PPh with PhPCl2 yields triphosphazane C6H4[NP(Ph)Cl]2PPh (13); 13 with 1,2-(NH2)2C6H4 forms cyclotriphosphazane C6H4(N2PPh)(PPh)2C6H 4(NH)2 (14). 14 is the key intermediate in formation of several new [(C6H4N2PPh)]2-(PPh)(PR) (R = Ph, Me) cleft-containing cyclotetraphosphazanes (17). Synthesis and structural characterization of the new phosphazanes are described.

AB - Reactions involving skeletally stabilized intermediate phosphazanes yield new cyclophosphazanes. Thermolysis of C6H4(NH)2PPh (9) yields (PhP)4 and the λ5 phosphazane [C6H4(NH)2]2PPh (10); 10 upon cyclocondensation with PhPCl2 yields cis,trans- and cis,cis- spiro λ3-λ5-λ3 phosphazanes [C6H4(N)2PPh]2PPh (12). Reaction of the bis(silyl) cyclophosphazane C6H4(NSiMe3)2PPh with PhPCl2 yields triphosphazane C6H4[NP(Ph)Cl]2PPh (13); 13 with 1,2-(NH2)2C6H4 forms cyclotriphosphazane C6H4(N2PPh)(PPh)2C6H 4(NH)2 (14). 14 is the key intermediate in formation of several new [(C6H4N2PPh)]2-(PPh)(PR) (R = Ph, Me) cleft-containing cyclotetraphosphazanes (17). Synthesis and structural characterization of the new phosphazanes are described.

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KW - Phosphazanes

KW - Triphosphazanes, tetraphosphazanes, aminophosphines

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