Synthesis and structural characterization of [PtCl2{meso-Ph(HO)PCH2CH2P(OH)Ph}] and structurally related derivatives

Nitrosylation of Octaethylporphyrin Osmium Complexes with Alkyl Nitrites and Thionitrites: Molecular Structures of Three Osmium Porphyrin Derivatives

“…The difluorophosphate P atom essentially eclipses a porphyrin nitrogen, with the N4-Os-O2-P1 torsion angle of 10.3°. Importantly, although the difluorophosphate anion forms complexes with other transition metals, [39][40][41]49,51 main group metals, 47,48,52,53 the ammonium cation, 54 and even the nitrosonium cation, 55 to the best of our knowledge this is the first reported example of a metalloporphyrin difluorophosphate derivative.…”

Addition of Nucleophiles to Phosphanido Derivatives of Pt(III): Formation of P–C, P–N, and P–O Bonds

“…The addition of OH – can take place with formation of a coordinated PPh 2 OH (PPh 2 /OH coupling) which affords the P , O -bridging phosphinito complex 3 upon deprotonation by a second hydroxide (Scheme ). Some phosphinito bridged complexes showing the Pt–P–O–Pt sequence have been structurally characterized, − and examples with both μ-phosphanido and μ-phosphinito Pt(I) derivatives have been synthesized and studied. − On the other hand, we have recently reported the synthesis of [(PPh 2 R F )(R F )Pt II (μ-OH)(μ-PPh 2 )­Pt II (dppe)][ClO 4 ] which seems to be formed from an undetected Pt(III),Pt(III) cationic intermediate [(R F ) 2 Pt III (μ-PPh 2 ) 2 Pt III (dppe)][ClO 4 ] 2 through a PPh 2 /C 6 F 5 coupling and the coordination of a bridging OH, but we did not observe the PPh 2 /OH coupling as in 3 . If the proposed azide or cyanate Pt(II),Pt(IV) intermediates evolve according to pathway a, a P–N bond can be formed by reductive coupling between phosphanido and azide (or cyanate) giving a coordinate PPh 2 N 3 (or PPh 2 NCO) which eliminates and easily decomposes. , Finally, the coordination environment of the metal centers can be completed with a μ 1,1 -N 3 ligand (or NCO), and 4a (or 5a ) could be formed.…”

Platinum organometallic compounds: classification and analysis of crystallographic and structural data. Part I. Monomeric Pt(0) and partly of Pt(II) with PtC4, PtA3B and PtC2A2 chromophores

“…There are 13 derivatives (Manojlovič -Muir et al 1978, Pregosin et al 1980, Payne and Stephan 1981, van Leeuwen et al 1990a,b , Dockter et al 1996, Powell et al 1996, Fornies et al 1997, Clark et al 1998, Wicht et al 1998a, Bennet et al 1999 in which three P atoms plus a C atom create a square planar environment about each Pt(II) atom. In one (Clark et al 1998 (2) 13.025 (4) 13.581 (2) 68.64 (2) 77.15 (2) 68.00(2) (3) 13.877 (3) 14.164 (6) 86.74 (3) 105.87 (3) 108.93(2) (2) 14.795 (7) 88.20 (3) ligands are involved.…”

“…The PtP 3 C unit is formed by a terdentate triphos with a unidentate C(O)C 6 H 4 Me (Dockter et al 1996 ) or two chelated ligands, one with P,P and the other one with C,P donor atoms (van Leeuwen et al 1990b ). In the remaining six derivatives (Payne and Stephan 1981, Powell et al 1996, Fornies et al 1997, Wicht et al 1998a, Bennet et al 1999, in addition to a chelated (P,P donor) ligand, the PtP 3 C unit contains unidentate P and C donor atom ligands ( Table 2). The data in Table 2 reveal 11 different types of chromophore: PtC 4 ( × 14) > PtP 3 C ( × 13) > PtN 3 C ( × 9) > PtC 3 N ( × 7) > PtC 3 P and PtCl 3 C (each × 2) > PtC 3 O, PtC 3 S, PtC 3 As, PtC 3 I and PtS 3 C (each × 1).…”