Studies on zinc(II) complexes with N-thioacylamidophosphates: X-ray crystal structure of the [Zn(RC(S)NP(O)(OiPr)2)2] (R = NH2, tBuNH, c-C6H11NH)

Abstract

The photoluminescent properties of 17 zinc(II) chelates [Zn(RC(S)NP(O)(OiPr)2-O,S)2] (R = Ph (1a), PhNH (1b), p-BrPh (1c), p-MeOC6H4NH (1d), p-BrC6H4NH (1e), NH2 (1f), iPrNH (1g), tBuNH (1h), Et2N (1i), c-C5H10N (1j), c-OC4H8N (1k), c-C6H11NH (1l), aminobenzo-15-crown-5 (1m)) and [Zn(B)(RC(S)NP(O)(OiPr)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 O2S2 environment formed by the C{double bond, long}S sulphur atoms and the P{double bond, long}O oxygen atoms of two deprotonated ligands. © 2008 Elsevier Ltd. All rights reserved.