Synthesis and reactivity of N-acetylamino acidate(2–) and related complexes of platinum(II)

Organodiphosphines in Pt(II) coordination complexes

“…There are 10 such derivatives: eight cis isomers, in which besides chelated P,P ligand with two different unidentate ligands [102][103][104][105][106] or heterobidentate ligand, [107][108][109] and two trans isomers in which besides the chelating-P,P ligand the hydride and chloride 110,111 completed a distorted square planar geometry about each Pt(II) atom.…”

“…The chelated P,P ligand created an eight-membered metallocycle (PC 5 P) with a P Pt P "bite" angle of 101. Two chelated ligands, one with P,P and another one with O,N donor sites, created a distorted square planar geometry in two monoclinic cis derivatives, namely in Pt(η 2 -dppe){η 2 -N(COMe)CH 2 C(O)O} 107 and Pt(η 2 -dppe)(η 2 -sa). 108 In each derivative, both chelated ligands form two five-membered metallocycles, one with (PC 2 P) and another one with (OC 2 N).…”

STRUCTURAL ASPECT OF PLATINUM COORDINATION COMPOUNDS: PART III. MONOMERIC SQUARE PLANAR (Pt A2XY AND PtABXY) AND TRIGONAL BIPYRAMIDAL PtII COORDINATION COMPOUNDS

“…Ten of them are cis with Υ = Ο [362][363][364][365][366][367][368][369][370]. In eight of these [362][363][364][365][366][367][368][369] there is a hetero-bidentate (0,N) divalent anionic ligand with two PPh 3 molecules. In seven of these [362][363][364][365][366][367][368] the chelate forms a five-membered metallocycle with O-Pt-N angles ranging from 77.6(2)° to 81.0(3)° (79.3° average).…”

“…In the other two derivatives of cis-PtP 2 ON type [369,370] there are two chelate ligands, one homo-bidentate (P,P) and the other hetero-bidentate (0,N). Five- The most common Pt(II) derivatives are those with the general inner coordination sphere of PtP 2 NY, with 30 (Υ = a), 22 (P), 2 (Br), 5 (Se) and 1 (I).…”

Synthesis and characterisation of organo-platinum(II) complexes of the N,O-donor ligands hippuric acid (N-benzoylglycine) and N-phenylanthranilic acid

“…Silver(I) oxide is well-recognised as a reagent in the chemistry of the platinum group metals, where it acts as both a halide abstracting reagent and a strong base, with the first known example of its use being reported in 1977. [14] Silver(I) oxide is now widely established as a mediator for metallacyclic reactions, and for the formation of platinum group metal-ligand bonds [6,15,16,17], and more recently, the synthesis of N-heterocyclic carbene complexes. [18,19,20,21] However, in our experience the use of silver oxide can result in the product having a slight purple tinge, most likely due to colloidal silver, originating from decomposition of soluble silver-containing complexes which form during the reaction.…”