Two-, Three-, and Four-Coordinate Ag(I) Coordination Polymers Formed by the Novel Phosphinite PPh<sub>2</sub>(3-OCH<sub>2</sub>C<sub>5</sub>H<sub>4</sub>N)
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The novel phosphinite PPh2(3-OCH2C5H4N) (1) has been synthesized, and its coordination properties to Ag(I) have been studied. When reacted in a 1:1 ratio with Ag(I), coordination polymers with different coordination numbers about the Ag are found depending on the anion. For PPh2(3-OCH2C5H4N)AgBF4 (2), a two-coordinate Ag is observed with a P−Ag−N angle of 167°. Mixed three and four coordination about Ag is observed for PPh2(3-OCH2C5H4N)AgOTf (3), and for the trifluoroacetate derivative, PPh2(3-OCH2C5H4N)Agtfa (4), only a four-coordinate Ag is produced. X-ray crystal-structure determinations for compounds 2−4 have been carried out. The X-ray structures show a wide range of Ag−Ag distances in the polymers, which are dependent on the conformation of the bridging ligand.
