TY - JOUR
T1 - Synthesis and Structure of Small-Molecule Cyclic Phosphazenes Bearing Ortho-Substituted Aryloxy and Phenoxy Substituents
AU - Allcock, Harry R.
AU - Dembek, Alexa A.
AU - Mang, Michael N.
AU - Riding, Geoffrey H.
AU - Parvez, Masood
AU - Visscher, Karyn B.
PY - 1992/1/1
Y1 - 1992/1/1
N2 - A series of cyclic trimeric and tetrameric phosphazenes with ortho-substituted aryloxy side groups have been synthesized. The ortho substituents are methyl and phenyl groups. These compounds are structural models for the corresponding linear highpolymeric phosphazenes. X-ray structural analysis of the cyclic tetrameric species [NP(OC6H4CH3-2)2]4(3), [NP(OC6H4C6- H5-2)2]4(4), and [NP(OC6H3)2]4(5) are reported. Crystals of 3 are triclinic with space group PI, with a = 11.494 (3) Å, b = 12.348 (2) Å, c = 30.181 (5) Å, α = 80.88 (l)°, β = 88.19 (2)°, γ = 71.23 (1)°, V = 4003.6 A3, and Z = 3. Crystals of 4 are orthorhombic with space group Pna21, with a = 25.177 (2) Å, 6 = 20.472 (3) Å, c = 17.256 (3) Å, V = 8894.1 Å3, and Z = 4. Finally, crystals of 5 are triclinic with space group Pi, with a = 11.514 (2) Å, b = 11.567 (2) Å, c = 17.761 (1) Å, a = 79.21 (1) °, 0 = 79.87 (1)°, y = 81.21 (1)°, V= 2269.8 Å3, and Z = 2.
AB - A series of cyclic trimeric and tetrameric phosphazenes with ortho-substituted aryloxy side groups have been synthesized. The ortho substituents are methyl and phenyl groups. These compounds are structural models for the corresponding linear highpolymeric phosphazenes. X-ray structural analysis of the cyclic tetrameric species [NP(OC6H4CH3-2)2]4(3), [NP(OC6H4C6- H5-2)2]4(4), and [NP(OC6H3)2]4(5) are reported. Crystals of 3 are triclinic with space group PI, with a = 11.494 (3) Å, b = 12.348 (2) Å, c = 30.181 (5) Å, α = 80.88 (l)°, β = 88.19 (2)°, γ = 71.23 (1)°, V = 4003.6 A3, and Z = 3. Crystals of 4 are orthorhombic with space group Pna21, with a = 25.177 (2) Å, 6 = 20.472 (3) Å, c = 17.256 (3) Å, V = 8894.1 Å3, and Z = 4. Finally, crystals of 5 are triclinic with space group Pi, with a = 11.514 (2) Å, b = 11.567 (2) Å, c = 17.761 (1) Å, a = 79.21 (1) °, 0 = 79.87 (1)°, y = 81.21 (1)°, V= 2269.8 Å3, and Z = 2.
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U2 - 10.1021/ic00039a015
DO - 10.1021/ic00039a015
M3 - Article
AN - SCOPUS:0000927427
SN - 0020-1669
VL - 31
SP - 2734
EP - 2739
JO - Inorganic chemistry
JF - Inorganic chemistry
IS - 13
ER -