A Series of monohapto pyrazolates of iridium(I) and iridium(III)

Bandini, Anna Laura; Banditelli, Guido; Bonati, Flavio; Minghetti, Giovanni; Demartin, Francesco; Manassero, Mario

doi:10.1016/0022-328x(84)80280-6

Cited by 43 publications

(34 citation statements)

References 29 publications

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“…Whereas in 10 only two hydride atoms had been detected in the final Fourier maps, and the third was placed in its position on the basis of symmetry considerations, in the current cation the three hydrides have been found in the final Fourier maps and included in the refinement with isotropic thermal parameters, thus confirming the stereochemistry suggested for 10 4g. The current structure is the first X‐ray determination of a complex of the type [Pt 2 (P‐P) 2 (H) x ] n + ( x = 2, n = 0, 2; x = 3, n = 1) in which all the hydride ligands have been experimentally located, and the resulting bond parameters are consistent with those reported in the more precise neutron diffraction structure of the cation [Pt 2 (dppe) 2 (H) 3 ] + 8,15.…”

Section: Resultssupporting

confidence: 62%

“…Bond lengths and angles involving the Pt atoms in the current cation can be compared with those found in cation [Pt 2 (butaphos) 2 (H) 3 ] + ( 10 ) 4g. Cation 10 differs from the present one only in the substitution of the two dcype ligands with two butaphos ones.…”

Section: Resultsmentioning

confidence: 96%

“…The values of the 1 J P,Pt coupling constants, 3900−3400 Hz, suggest species with a trans P−Pt−O arrangement with anionic (OH or OR) rather than neutral (H 2 O or CH 3 OH) ligands (e.g. ref 11b…”

Section: Resultsmentioning

confidence: 99%

“…The former arrangement, with two bridging and one terminal hydride, implies different environments for the two platinum atoms, as found in the structures of [Pt 2 {Ph 2 P(CH 2 ) 2 PPh 2 } 2 (H) 3 ] + 4c,8 and [Pt 2 {(Ph 2 PC 5 H 4 ) 2 Fe} 2 (H) 3 ] + 4f. On the other hand, the coordination geometries of the two platinum atoms in the structures of [Pt 2 (dtbpp) 2 (H) 3 ] + 4b and [Pt 2 (butaphos) 2 (H) 3 ] + 4g are approximately the same, and are consistent with the presence of two terminal and one bridging hydrides.…”

Section: Introductionmentioning

confidence: 99%

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Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt₂(dcype)₂(H)₃][BPh₄] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

et al. 2003

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Section: Resultssupporting

confidence: 62%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt₂(dcype)₂(H)₃][BPh₄] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

et al. 2003

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“…+ , [37] and [Pt 2 (H) 3 A C H T U N G T R E N N U N G (dcype) 2 ] + . [14] As described in this work, the X-ray diffraction of 1 made it possible to determine the structure of this complex, including the direct location of the hydrogen atoms.…”

Section: H T U N G T R E N N U N G (M-x)a C H T U N G T R E N N U N Gmentioning

confidence: 99%

Reaction Chemistry of Complexes Containing PtH, PtSH, or PtS Fragments: From Their Apparent Simplicity to the Maze of Reactions Underlying Their Interconversion

Novio

González-Duarte

Lledós

2007

Chemistry A European J

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The relevance of platinum in the reaction of thiophene and derivatives with homogeneous transition-metal complexes as models for hydrodesulfurization has led us to the study of the reaction chemistry of complexes containing Pt--H, Pt--SH, and Pt--S fragments. Exploration of the reactions triggered by addition of controlled amounts of Na2S or NaSH to [Pt2(H)2(mu-H)(dppp)2]ClO4 (1) has provided evidence of the formation of complexes [Pt2(mu-H)(mu-S)(dppp)2]ClO4 (2), [Pt(H)(SH)(dppp)] (3), [Pt2(mu-S)2(dppp)2] (4), [Pt2(mu-S)(dppp)2] (5) and [Pt(SH)2(dppp)], in which dppp denotes 1,3-bis(diphenylphosphanyl)propane. Consequently, complexes 1, 2, and 5 as well as the already reported 3, 4, and [Pt(SH)2(dppp)] have been obtained and fully characterized spectroscopically. Also the crystal structures of 1 and 2 have been solved. Complexes 1-5 constitute the main framework of the network of reactions that account for the evolution of 1 under various experimental conditions as shown in Scheme 1. Apparently, this network has complexes 2 and 4 as dead-ends. However, their reciprocal interconversion by means of the replacement of one bridging hydride or sulfide ligand in the respective {Pt(mu-H)(mu-S)Pt} and {Pt(mu-S)2Pt} cores enables the closure of the reaction cycle involving complexes 1-5. Theoretical calculations support the existence of the undetected intermediates proposed for conversion from 1 to 2 and from 3 to 2 and also account for the fluxional behavior of 1 in solution. The intermediates proposed are consistent with the experimental results obtained in comparable reactions carried out with labeled reagents, which have provided evidence that complex 1 is the source of the hydride ligands in complexes 2 and 3. Overall, our results show the strong dependence on the experimental conditions for the formation of complexes 1-5 as well as for their further conversion in solution.

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Pyrazolato Metal Complexes: Synthesis, Characterization and X-ray Crystal Structures of Rhenium(I) Derivatives

Ardizzoia¹,

LaMonica

Maspero

et al. 1998

Eur. J. Inorg. Chem.

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A Series of monohapto pyrazolates of iridium(I) and iridium(III)

Cited by 43 publications

References 29 publications

Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt₂(dcype)₂(H)₃][BPh₄] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt₂(dcype)₂(H)₃][BPh₄] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

Reaction Chemistry of Complexes Containing PtH, PtSH, or PtS Fragments: From Their Apparent Simplicity to the Maze of Reactions Underlying Their Interconversion

Pyrazolato Metal Complexes: Synthesis, Characterization and X-ray Crystal Structures of Rhenium(I) Derivatives

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A Series of monohapto pyrazolates of iridium(I) and iridium(III)

Cited by 43 publications

References 29 publications

Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt2(dcype)2(H)3][BPh4] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt2(dcype)2(H)3][BPh4] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

Reaction Chemistry of Complexes Containing PtH, PtSH, or PtS Fragments: From Their Apparent Simplicity to the Maze of Reactions Underlying Their Interconversion

Pyrazolato Metal Complexes: Synthesis, Characterization and X-ray Crystal Structures of Rhenium(I) Derivatives

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Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt₂(dcype)₂(H)₃][BPh₄] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}

Binuclear Hydridoplatinum(II): One‐Pot Synthesis, INS Spectra and X‐ray Crystal Structure of [Pt₂(dcype)₂(H)₃][BPh₄] {dcype = 1,2‐Bis(dicyclohexylphosphanyl)ethane}