Synthesis of Functionalized Indolemand Benzom Fused

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A) Pearson RG (1963) J Am Chem Soc 85:3533; (b) Pearson RG (ed) (1973) Hard and soft acids and bases. Dowden, Hutchinson, and Ross, Stroudsburg, PA 20. Herrmann WA, Anwander R, Scherer W (1993) Chem Ber 126:1533 21. Raymond KN, Eigenbroth CW Jr (1980) Acc Chem Res 13:276 22. (a) Anwander R (1996) In: Cornils B, Herrmann WA (eds) Applied homogeneous catalysis by organometallic complexes. VCH, Weinheim, p 866; (b) Edelmann FT (1996) Top Curr Chem 179:247 23. Bradley DC, Hursthouse MB, Aspinall HC, Sales KD, Walker NPC (1985) J Chem Soc Chem Commun 1585 24.

A dinuclear composition has been proven for Ln(III) complexes of the trivalent oligosilsesquioxane ligand, T7(OH)3 [233]. These incompletely condensed ligands SiMe2tBu tBuMe2Si Si Ln C B B B B N C B B B B B B Si O Si N SiMe2tBu O O O O Si O N N O O Si O O Si O Si O Si O O O O F3C O CF3 Fig. 15. Trivalent ancillary ligands O CF3 31 Principles in Organolanthanide Chemistry appear to be highly electron withdrawing and are currently being studied as models for silica surfaces [234]. 3 Immobilization – “Supported Ligands” The ligand sphere can also be manipulated by immobilization (grafting) techniques.

As a rule, the formation of di- and multinuclear species is achieved by intermolecular bridging of the smallest, most reactive and labile Ln–X bond and, hence, leads to decreased reactivity. Dinuclear Complexes The formation of dinuclear complexes is routinely observed along with the important class of lanthanidocene complexes of type Cp2LnR when R is a sterically less demanding ligand such as H, Me or a small alkoxide group [4]. Depending on the metal and ligand size, bridging can also occur in an asymmetric fashion as evidenced in [Cp*2Lu(CH3)]2 [Eq.

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