55606-72-9Relevant academic research and scientific papers
Synthesis and Coordination of a Cleft-Stabilized Triphosphazane Hydride: C6H4N2[P(S)(NEt2)2] 2PH
Young, Susan M.,Carperos, Vasili,Norman, Arlan D.
, p. 2000 - 2005 (2008/10/09)
Reaction of the molecular cleft-containing triphosphazane C6H4N2[P(S)(NEt2)2] 2PCl (2) with LiBH4 yields the borane-coordinated triphosphazane hydride C6H4N2[P(S)(NEt2)2] 2P(BH3)H (3). The complex is strongly associated; free hydride C6H4N2[P(S)(NEt2)2] 2PH (4) can be obtained by treatment of 3 with tertiary amines. Complex 3 reacts with (norbornadiene)Mo(CO)4 to form triphosphazane complexes {C6H4N2[P(S)(NEt2)2] 2PH}Mo(CO)3 (5), {C6H4N2[P(S)(NEt2)2] 2P(BH2)}Mo(CO)4 (6), and {C6H4N2[P(S)(NEt2)2] 2P(BH2)}Mo(CO)5 (7). Under more vigorous conditions 2 and Mo(CO)6 yield 5 and {C6H4N5[P(S)(NEt2)2] 2PH}Mo(CO)4 (8). Compounds 3-8 were characterized by spectral data. X-ray analyses were performed on 6 and 7: 6, monoclinic, P21/c, a = 10.6350-(10) A, b = 18.979(3) A, c = 18.204(3) A, β= 91.750(10)°, V = 3672.6(9) A3, Z = 4, R = 0.044, Rw = 0.038; 7, triclinic, P1, a = 11.080(2) A, b = 11.253(3) A, c = 17.739(4) A, α = 94.86(2)°, β= 104.57(2)°, γ = 101.85(2)°, V = 2073.2(8) A3, Z = 2, R = 0.040, Rw = 0.047. Structures are compared, and the influence of the molecular cleft on reaction outcome and the involvement of the peripheral sulfur atoms in coordination are discussed.
