Synthesis and structures of a palladium macrocycle, a six-membered palladacycle, and a palladium compartment complexes: [Pd(L1)Cl], [Pd(NH2CH2CH2CH2NH2)Cl2], and [Pd(L2)] (HL1 = (E)-2-)(((3-aminopropyl)imino)methyl)-6-methoxyphenol; H2L2 = N, N′-bis(3-methoxysalicylidenimino-1, 3-diaminopropane). (24th November 2016)

• Record Type: Journal Article
• Authors: Lee, Ji Hun; Lee, Sang Moon; Lee, Soon W.
• Is Part Of: Polyhedron. Volume 119(2016)
• Page Start: 120
• Page End: 126
• Publication Date: 2016-11-24
• Subjects: Palladium compartment complex -- Schiff-base ligand -- Crystal structures -- Thermal conversion -- Cyclohexane-like palladacycle; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2016.08.039
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical Abstract: The palladium compartment complex [Pd(L 2 )] (H2 L 2 = N, N ′-bis(3-methoxysalicylidenimino-1, 3-diaminopropane)) was prepared from the free bis(imine) ligand (H2 L 2 ) and [Pd(PhCN)2 Cl2 ] or Pd(OAc)2 in methanol. Abstract: The Pd(II) bis(benzonitrile) complex [Pd(PhCN)2 Cl2 ] reacted with a mixture of 2-hydroxy-3-methoxybenzaldehyde, 1, 3-diaminopropane, and triethylamine in acetonitrile to produce [Pd(L 1 )Cl] (HL 1 = ( E )-2-(((3-aminopropyl)imino)methyl)-6-methoxyphenol) (1 ), which contains an imine–amine-type macrocyclic ligand and a chloro ligand. Complex1 was converted into a cyclohexane-like palladacycle, [Pd(NH2 CH2 CH2 CH2 NH2 )Cl2 ] (2 ), when heated in acetonitrile at 80 °C for 60 h. The palladium compartment complex [Pd(L 2 )] (H2 L 2 = N, N ′-bis(3-methoxysalicylidenimino-1, 3-diaminopropane) (3 ) was obtained from the free bis(imine) ligand (H2 L 2 ) and [Pd(PhCN)2 Cl2 ] or Pd(OAc)2 in methanol. All complexes were structurally characterized by X-ray diffraction. Complex3 is the first structurally characterized palladium compartment complex, in which the compartment ligand has an inner N2 O2 and an outer O2 O′2 compartments. The coordination geometry of the palladium metal in all complexes (1 –3 ) can be best described as square-planar.