REACTIONS OF BIS(HEXAMETHYLDISILAZANYL)MANGANESE(II) WITH NITROGEN-CONTAINING LIGANDS - SYNTHESES AND X-RAY STRUCTURES OF [MN(1,10-PHEN)(N(SIME(3))(2))(2)] AND [MN(4,4'-BIPY) (N(SIME(3))(2))(2)]CENTER-DOT-THF

The reaction of [Mn{N(SiMe(3))(2)}(2) (THF)] 1 with 2,2'-bipyridine (2 ,2'-bipy), l,10-phenanthroline (l,10-phen) and 4,4'-bipyridine (4,4'-b ipy) yields three new complexes: [Mn(2,2'-bipy) {N(SiMe(3))(2)}(2)] 2, [Mn(1,10-phen) (N(SiMe(3))(2)}(2)] 3, and [Mn(4,4'-bipy) (N(SiMe(3))( 2)}(2)] THF 4. The crystal structure of 3 reveals mononuclear species with pseudo-tetrahedral coordinated manganese(II) ions. Crystal data f or 3: orthorhombic, a = 1741.0(2), b = 1879.3(3), c = 1967.0(3) pm, V = 6.436(2) nm(3), Z = 8, space group Pbca. Compound 4 crystallizes in the monoclinic system, space group P2(1)/c; the lattice parameters are : a = 2139.5(3), b = 925.30(10), c = 1786.4(2) pm, beta = 101.34(1)deg rees, V = 3.4675(7) nm(3), Z = 4. The molecular structure of 4 consist s of zig-zag infinite chains, with bridging 4,4'-bipyridine groups.