2,2,4,4-Tetrakis(3,5-Dimethylpyrazol-1-Yl)-2-Lambda(5),4-Lambda(5),6-Lam Bda(5)-Cyclotriphosphaza-1,3,5-Triene-6-Spiro-2'-1',3'-Diaza-2'-Phospha- Cyclohexane, C23h36n13p3
by Cordes, A. W.; Folkert, S.; Bryan, C. D.; Chandrasekhar, V.; Thomas, K. R. J.
The title phosphazene, P(3)N(3)R(4)XX, where R is 3,5-dimethylpyrazole and XX is a spiro-bonded -NH- CH2CH2CH2NH- ring, has P-N bonds of 1.554 (5)-1.614 (5) Angstrom in the phosphazene ring with exocylic bonds of 1.609 (5) and 1.635 (5) Angstrom to the spiro ring and 1.683 (4)-1.708 (5) Angstrom to the pyrazole groups. The N-P-N angle within the phosphazene ring at the unique P atom is 6.9 (3)degrees smaller than those at the other P atoms. One of the pyrazole-substituted P atoms is displaced by 0.252 (5) Angstrom from the best plane of the other five ring atoms, which are coplanar to within 0.087 (6) Angstrom. The -PNCCCN- ring conformation is intermediate between a boat and a twist-boat.
- Journal
- Acta Crystallographica Section C-Crystal Structure Communications
- Volume
- 50
- Year
- 1994
- Start Page
- 1976-1978
- URL
- https://dx.doi.org/10.1107/s0108270194007006
- ISBN/ISSN
- 1600-5759; 0108-2701
- DOI
- 10.1107/s0108270194007006