Patent ID: 8445711
Filing Date: 2013-05-21
Classification: C07C,C07F

Abstract:
1. A metal complex ML n X m , where M is a metal of group 8, 9 or 10, L is a bidentate phosphine ligand of formula (I), (II), (III), (IV) or (V) as set out below, X is HCO 3 − , or CO 3 2− , n is a number equal to or less than the coordination number of the metal, m is 1 or 2 and is equal to the oxidation state of the metal: wherein: Ar is a bridging group comprising an optionally substituted aryl moiety to which the phosphorus atoms are linked on available adjacent carbon atoms; A and B each independently represent lower alkylene; K, D, E and Z are substituents of the aryl moiety (Ar) and each independently represent hydrogen, lower alkyl, aryl, Het, halo, cyano, nitro, OR R R R Q wherein: A K D E or both D X X X X X and in this yet further embodiment, Q M represents a Group VIB or VIIIB metal or metal cation thereof; L L R R R R Y n=0 or 1; and m=0 to 5; provided that when n=1 then m equals 0, and when n equals 0 then m does not equal 0; wherein: A and B are as defined for formula (IV) hereinafter R represents an optionally substituted cycloalkyl moiety to which the Q the groups X Q wherein: A and B each independently represent lower alkylene; R represents a cyclic hydrocarbyl structure having at least one non-aromatic ring to which the Q wherein each adjacent cyclic atom to the said available adjacent cyclic atom is not substituted so as to form a further 3-8 atom ring structure via the other adjacent cyclic atom to the said available adjacent cyclic atoms in the at least one ring or via an atom adjacent to the said other adjacent atom but outside the at least one ring; the groups X1, X2, X3 and X4 independently represent univalent radicals up to 30 atoms having at least one tertiary carbon atom or X1 and X2 and/or X3 and X4 together form a bivalent radical of up to 40 atoms having at least two tertiary carbon atoms wherein each said univalent or bivalent radical is joined via said at least one or two tertiary carbon atoms respectively to the appropriate atom Q Q wherein: A and B are as identified in formula (IV); R represents a hydrocarbyl aromatic structure having at least one aromatic ring to which Q wherein the substituent(s) Y the groups X Q