Studies on zinc(II) complexes with N-thioacylamidophosphates: X-ray crystal structure of the [Zn(RC(S)NP(O)(O iPr) 2) 2] (R = NH 2, tBuNH, c-C 6H 11NH)

Abstract

The photoluminescent properties of 17 zinc(II) chelates [Zn(RC(S)NP(O)(O iPr) 2- O, S) 2] (R = Ph ( 1a), PhNH ( 1b), p-BrPh ( 1c), p-MeOC 6H 4NH ( 1d), p-BrC 6H 4NH ( 1e), NH 2 ( 1f), iPrNH ( 1g), tBuNH ( 1h), Et 2N ( 1i), c-C 5H 10N ( 1j), c-OC 4H 8N ( 1k), c-C 6H 11NH ( 1l), aminobenzo-15-crown-5 ( 1m)) and [Zn(B)(RC(S)NP(O)(O iPr) 2- O, S) 2] (R = Ph, B = 2,2′-bipyridine ( 2a); R = Ph, B = 1,10-phenanthroline ( 2b); R = PhNH, B = 2,2′-bipyridine ( 2c); R = PhNH, B = 1,10-phenanthroline ( 2d)), are reported. Colorless and air/moisture stable chelate complexes of divalent zinc show blue emission in the solid state when excited with UV light. Complexes 1f, 1h, 1l were investigated by single crystal X-ray diffraction. The zinc(II) atom in complexes 1f, 1h, 1l is in a distorted tetrahedral O 2S 2 environment formed by the C S sulphur atoms and the P O oxygen atoms of two deprotonated ligands.