Synthesis and structure determination of some platinum (II) complexes with hydrophilic carboxylated tertiary phosphine ligands期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Synthesis and structure determination of some platinum (II) complexes with hydrophilic carboxylated tertiary phosphine ligands

Authors:	Vadde Ravindar Herbert Schumann Holger Hemling Jochanan Blum

Institution:	^a Department of Chemistry, University College, Kakatiya University, Warangal 506 009, India ^b Institut für Anorganische und Analytische Chemie der Technischen Universität Berlin, Straße des 17. Juni 135, D-10623, Berlin, Germany ^c Department of Organic Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Abstract:	Pt(COD)Cl₂] (1) reacts with PPh₂(C₆H₄COOH) (2a,b,c), PPh₂(C₆H₄COONa) (2d), PPh(C₆H₄COOH)₂ (4b,c) and P(C₆H₄COOH)₃ (6b,c) with formation of the corresponding complexes Pt(L)₂Cl₂] (3a,b,c,d, 5b,c, 7b,c). Halide abstraction from 3a by Ag⁺ promotes coordination of the ortho-carboxylate function to platinum, yielding -2)}{PPh₂(C₆H₄COOH-2)}Cl] (bd8) and ovbar\|{PPh₂(C₆H₄COO-2)}₂] (bd9). Reaction of 1 with CO and 2a or 2b gives Pt(CO)(L)Cl₂] (10a,b), wherea 1 and 2,3-bis(diphenylphosphino) maleic anhydride yields Full-size image (bd12) and Pt{Ph₂PC(COOH)=C(COOMe)-PPh₂}Cl₂] (13). The ¹H, ¹³C and ³¹P NMR spectra are reported and discussed. The X-ray structural analysis of 3b showed the compound to be monoclinic, space group P2₁/n, Z=4, with a=1038.5(3), B=1792.6(4), C=2311.5(4) pm, β=91.6(2)° and D_calc=1.353 g cm^?3. The structure was solved from 4832 observed reflections with F₀ > 4 σ(F₀) and refined to a final R value of 0.0743. The Pt atom is surrounded by two Cl and two P atoms in a square planar arrangement.

Keywords:	Hydrophilic carboxylated tertiary phosphines Platinum complexes Crystal structures
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