The information of 2,6-bis(diphenylphosphino)pyridine

The bridging phosphine ligand 2,6-bis(diphenylphosphino)pyridine (L) was acclimated to amalgamate a new, aloof organometallic ligand {Fe(CO)4}2(μ-L) 1, which exhibits eclipsed and staggered conformations in two apparent forms. This Fe,N,Fe-tridentate ligand reacts with argent perchlorate to anatomy the hetero-trinuclear circuitous [{Fe(CO)4}2Ag(μ-L)](ClO4) 2, in which the axial silver(I) atom bridges a brace of iron(0) atoms at Fe−Ag distances of 2.627(3) and 2.652(3) Å; the Fe−Ag−Fe bend is 170.98(9)°. The acknowledgment of 1 with mercury(II) chloride gives {Fe(CO)4}2Hg2Cl4(μ-L), 3. The ligand aswell reacts with mercury(II) acetate to anatomy a hetero-octanuclear circuitous [{Fe(CO)3Hg}2(μ-L)]2 4 and a atypical hetero-heptanuclear circuitous Fe3(CO)8Hg4(μ-L)2(MeCO2)2 5. Circuitous 4 displays a aboveboard brownish amount in which the adamant and mercury atoms absorb the corners and the centers of the edges, respectively. The metal atoms in 5 are affiliated to anatomy a coiled band with aeroembolism at the adamant atoms.The bridging ligand 2,6-bis(diphenylphosphino)pyridine, L, was acclimated to amalgamate two aegis complexes: Pd3Cl6(μ-L)3 has a C2 arbor casual through an 18-membered macrocyclic ring, in which two cis- and one trans-coordinated palladium(II) atoms are alternately bridged by three L ligands; [Pd2(μ-L)2]2+ exhibits a attenuate allocation approach in which two metal–metal affirmed palladium(I) atoms (Pd–Pd = 2.5525(7) Å) are anniversary P, N-chelated by one ligand and affiliated to the bridging phosphorus atom of the added ligand.
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