Synthesis of diphenylphosphido-bridged manganese-gold complexes. Crystal structures of [N(PPh3)2][Au2Mn(µ-PPh2)2(CO)4(C6F5)2] and [Au2Mn2(µ-PPh2)4(CO)8]
Gabino A. CarriedoVı́ctor RieraMaría L. López-Rodrı́guezPeter G. JonesJürgen Lautner
Abstract
The complexes [LnMn(µ-PPh2)AuX]z[Ln=(CO)5 or (CO)3(bipy)(bipy = 2,2′-bipyridine); X = P(C6H4Me-4)3, z= 1, perchlorate salt or X = C6F5, z= 0], [(OC)4Mn(µ-PPh2)2(AuX)2]z[X = P(C6H4Me-4)3 or PPh3, z= 1, perchlorate salt; X = C6F5, z=–1, N(PPh3)2+ salt], [LnMn(µ-PPh2)Au(µ-PPh2)MnLn] A [Ln=(CO)5, A = ClO4; or Ln=(CO)3(bipy), A = PF6], and [Au2Mn2(µ-PPh2)4(CO)8] have been prepared from the corresponding salts [Mn(PHPh2)yLn]A(y= 1 or 2) by reaction with [AuCl(PR3)](R = C6H4Me-4 or Ph), [Au(C6F5)(tht)] or [AuCl(tht)](tht = tetrahydrothiophene) in the presence of appropriate proportions of K(acac), Tl(acac), or [N(PPh3)2][acac](acac = acetylacetonate), or mixtures of these reagents. The compounds [N(PPh3)2][Au2Mn(µ-PPh2)2(CO)4(C6F5)2] and [Au2Mn2(µ-PPh2)4(CO)8] have been characterized by X-ray diffraction; both display short Au ⋯ Au interactions.
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