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Phosphorus-Nitrogen Oligomers and Polymers

Phosphorus-boron-nitrogen-containing oligomer and polymer products comprising -P=0, -P-0-B-, -B-O-C- and -C-N-H- bonds are not studied enough. IR spectroscopy showed that these groups are a part of the PEDA luacromolecule composition. [Pg.203]

The phosphazenes are cyclic or chain compounds that contain alternating phosphorus and nitrogen atoms with two substituents on each phosphorus atom. The three main structural types are the cyclic trimer (13-11), cyclic tetramer (13-III) and the oligomer or high polymer (13-IV). A few cyclic pentamers and hexamers are also known. The alternating sets of single and double bonds in (13-11) to (13-IV) are written for convenience but (see below) should not be taken literally. [Pg.387]

See other pages where Phosphorus-Nitrogen Oligomers and Polymers is mentioned: [Pg.244]    [Pg.245]    [Pg.246]    [Pg.248]    [Pg.255]    [Pg.256]    [Pg.257]    [Pg.258]    [Pg.261]    [Pg.262]    [Pg.263]    [Pg.264]    [Pg.265]    [Pg.267]    [Pg.268]    [Pg.244]    [Pg.245]    [Pg.246]    [Pg.248]    [Pg.255]    [Pg.256]    [Pg.257]    [Pg.258]    [Pg.261]    [Pg.262]    [Pg.263]    [Pg.264]    [Pg.265]    [Pg.267]    [Pg.268]    [Pg.121]    [Pg.168]    [Pg.304]    [Pg.913]    [Pg.3721]    [Pg.3720]    [Pg.668]    [Pg.7]    [Pg.270]    [Pg.203]    [Pg.78]    [Pg.85]    [Pg.216]   


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Phosphorus-nitrogen polymers

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