Cycloalkylaminocyclo- and polyphosphazenes: X-ray crystal structures of gem-tetrakis(cyclohexylamino)dichlorocyclotriphosphazene octakis(cyclopropylamino)cyclotetraphosphazene
by Chandrasekhar, V.; Vivekanandan, K.; Nagendran, S.; Andavan, G. T. S.; Weathers, N. R.; Yarbrough, J. C.; Cordes, A. W.
The reactions of chlorocyclophosphazenes N3P3Cl6 (1) and N4P4Cl8 (2) and polpdichlorophosphazene (3) with cyclohexylamine, cyclopentylamine, and cyclopropylamine have been studied. The major product with 1 is the geminal tetrakis derivative N3P3Cl2(NHR)(4), while 2 gives the completely substituted derivative, N4P4(NHR)(8). X-ray crystal structure determinations of N3P3Cl2(NHC6H11)(4) (1a) and N4P4(NHC3H5)(8) (2c) have been carried out, 1a crystallizes in a triclinic space group, P1, with a = 11.2330(13) Angstrom, b = 11.4269(16) Angstrom, c = 13.4055(12) Angstrom, alpha = 72.211(10)degrees, beta = 72.150(9)degrees, gamma = 81.777(11)degrees, V = 1557.3(3) Angstrom(3), and Z = 2. 2c crystallizes in a monclinic space group, P2(1)/n, with a = 12.433(3) Angstrom, b = 20.484(4) Angstrom, c = 12.645(3) Angstrom, beta = 92.81(2)degrees, V = 1557.3(3) Angstrom(3), and Z = 4. The cycloalkylamino-substituted polyphosphazenes contain a small amount of residual chlorine atoms. These have high glass transition temperatures.
- Journal
- Inorganic Chemistry
- Volume
- 37
- Issue
- 24
- Year
- 1998
- Start Page
- 6192-6198
- URL
- https://dx.doi.org/10.1021/ic980520j
- ISBN/ISSN
- 1520-510X; 0020-1669
- DOI
- 10.1021/ic980520j