TY - JOUR
T1 - Cycloalkylaminocyclo- and Polyphosphazenes
T2 - X-ray Crystal Structures of gem-Tetrakis(cyclohexylamino)dichlorocyclotriphosphazene and Octakis(cyclopropylamino)cyclotetraphosphazene
AU - Chandrasekhar, V.
AU - Vivekanandan, K.
AU - Nagendran, S.
AU - Senthil Andavan, G. T.
AU - Weathers, N. R.
AU - Yarbrough, J. C.
AU - Cordes, A. W.
PY - 1998
Y1 - 1998
N2 - The reactions of chlorocyclophosphazenes N3P3Cl6 (1) and N4P4Cl8 (2) and polydichlorophosphazene (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) Å, b = 11.4269(16) Å, c = 13.4055(12) Å, α = 72.211(10)°, β= 72.150(9)°, γ = 81.777(11)°, V = 1557.3(3) A°3, and Z = 2. 2c crystallizes in a monclinic space group, P21/n, with a = 12.433(3) Å, b = 20.484(4) Å, c = 12.645(3) Å, β = 92.81(2)°, V = 1557.3(3) A°3, and Z = 4. The cycloalkylamino-substituted polyphosphazenes contain a small amount of residual chlorine atoms. These have high glass transition temperatures.
AB - The reactions of chlorocyclophosphazenes N3P3Cl6 (1) and N4P4Cl8 (2) and polydichlorophosphazene (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) Å, b = 11.4269(16) Å, c = 13.4055(12) Å, α = 72.211(10)°, β= 72.150(9)°, γ = 81.777(11)°, V = 1557.3(3) A°3, and Z = 2. 2c crystallizes in a monclinic space group, P21/n, with a = 12.433(3) Å, b = 20.484(4) Å, c = 12.645(3) Å, β = 92.81(2)°, V = 1557.3(3) A°3, and Z = 4. The cycloalkylamino-substituted polyphosphazenes contain a small amount of residual chlorine atoms. These have high glass transition temperatures.
UR - https://www.scopus.com/pages/publications/0000189934
U2 - 10.1021/ic980520j
DO - 10.1021/ic980520j
M3 - Article
AN - SCOPUS:0000189934
SN - 0020-1669
VL - 37
SP - 6192
EP - 6198
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 24
ER -