Synthesis and characterization of ferrocenylalcohol derivatives of hexachlorocyclotriphosphazene. X-ray crystal structure of N3P3Cl5OCH2CH2C5H4FeCp

The preparation of 1-ferrocenyl-2-propanol (5) from lithioferrocene and pro pylene oxide is described. The reaction of lithium diisopropylamide with 2- ferrocenylethanol (3) or 1-ferrocenyl-2-propanol (5), followed by the addit ion to hexachlorocyclotriphosphazane (1) provides N3P3Cl6-n (OCHRCH2C5H4FeC p)(n) [R = H, n = 1 (3) or 2 (4); R = CH3, n = 1 (6)]. The corresponding re actions with ferrocenylmethanol lead to degradation products via a phosphaz ene-phosphazene rearrangement. The substitution pattern observed for N3P3Cl 4(OCH2CH2C5H4FeCp)(2) (4) suggests that the reaction follows a predominantl y cis-non-geminal pathway. The substituted phosphazene derivatives were cha racterized by standard means including P-31-NMR, mass spectrometry, element al analysis and cyclic voltammetry. An X-ray crystal structure of N3P3Cl5(O CH2CH2C5H4FeCp) (3) was obtained. (C) 2001 Elsevier Science B.V. All rights reserved.