Selektive Darstellung zweifach diorganophosphido-verbrückter Metallatetrahedrane [Re2(MPR3)2(μ-PR2)2(CO)6] mit Re2M2-Metallgerüst (M = Au, Ag)

Haupt, H.‐J.; Petters, Dina; Flörke, Ülrich

doi:10.1002/(sici)1521-3749(199910)625:10<1652::aid-zaac1652>3.0.co;2-q

Cited by 7 publications

(4 citation statements)

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“…This, together with the inward bending of the Mo−M−Mo bonds in the ν 2 -squares, suggests the existence of attractive intramolecular d 10 −d 10 interactions between the group 11 metals. Examples of Cu−Ag, − Cu−Au, ,− and Ag−Au ,,,− ,− interactions have been reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

Heterometallic Chains and Clusters with Gold-Transition Metal Bonds: Synthesis and Interconversion

Sculfort

Welter²,

Braunstein

2010

Inorg. Chem.

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Anionic, metal-metal bonded heterotrinuclear chain complexes of the type [M{MoCp(CO)(3)}(2)](-) with M = Cu(I), Ag(I), and Au(I) have been prepared by reaction between a d(10) metal precursor complex and the carbonylmetalate [MoCp(CO)(3)](-). These complexes have been structurally characterized by X-ray diffraction and used as precursors to neutral 2-D hexa- or octanuclear mixed-metal clusters of the general formula [MMoCp(CO)(3)](n) (M = Cu, n = 3; M = Ag or Au, n = 4), which are characterized by a central core constituted of interacting d(10) metal ions, surrounded by the molybdenum atoms. When M = Cu, the six metal atoms form a nu(2)-triangular core whereas when M = Ag or Au, a nu(2)-square structure is observed for the octanuclear metal core. It is shown in the case of M = Cu and Ag that interconversion between the metal chain complexes of stoichiometry M[m](2) and the clusters {M[m]}(n) is possible, and the position of the equilibrium depends solely on the respective stoichiometry of the reagents. The new nu(2)-square, octanuclear, trimetallic complexes [CuAg(3){MoCp(CO)(3)}(4)] (7) and [CuAu(3){MoCp(CO)(3)}(4)] (8) have also been obtained and characterized in the solid-state by X-ray diffraction, as well as the unexpected double pentanuclear complex [{Na(dme)}{Cu(2)[MoCp(CO)(3)](3)}](2) (9).

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Section: Resultsmentioning

confidence: 99%

Heterometallic Chains and Clusters with Gold-Transition Metal Bonds: Synthesis and Interconversion

Sculfort

Welter²,

Braunstein

2010

Inorg. Chem.

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“…However the reaction principle was here successful only in the case of gold, not for the other coinage‐metals copper and silver [7] . Moreover, Haupt and co‐workers were successful inthe preparation of dirhenium metal clusters containing two bridging M(PR 3 ) fragments (M=Au, Ag) [8] . In this context, in 2012, the chemistry of gold under the special consideration of the isolobality concept as a guide in the synthesis of metal clusters was reviewed by Raubenheimer and Schmidbaur [9] .…”

Section: Introductionmentioning

confidence: 99%

“…[7] Moreover, Haupt and co-workers were successful inthe preparation of dirhenium metal clusters containing two bridging M(PR 3 ) fragments (M = Au, Ag). [8] In this context, in 2012, the chemistry of gold under the special consideration of the isolobality concept as a guide in the synthesis of metal clusters was reviewed by Raubenheimer and Schmidbaur. [9] Sometime later Adams and co-workers described the isolobal relationship between the molecules [Re 2 (CO) 8 (μ-H) 2 ] and the cluster [Re 2 {μ-Au(PPh 3 )} 2 (CO) 8 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a Novel Triangular Rh₂Au Cluster Compound Inspired by the Isolobality Concept

et al. 2020

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The synthesis of [Rh2(η5‐Cp)2(μ‐H)(μ‐PPh2)2]BF4 (2) by protonation reaction of the metal basic complex [Rh2(η5‐Cp)2(μ‐PPh2)2] (1) with tetrafluoroboric acid in diethyl ether is described. Complex salt 2 was obtained in high yield and fully characterized by spectroscopic means and X‐ray crystal diffraction. Applying the isolobal analogy between H and the fragment Au(PPh3) as a synthetic strategy on the reaction of compound 2 with equimolar amounts of [Au(CH3)(PPh3)] in refluxing acetone resulted in the formation of the expected triangular cluster compound [Rh2{μ‐Au(PPh3)}(η5‐Cp)2(μ‐PPh2)2]BF4 (3) in good yield. Metal cluster salt 3 was fully characterized by spectroscopic data and its molecular structure in the crystal was determined by X‐ray diffraction. The structural comparison of the protonated dirhodium core in the cationic complex of 2 with the Rh2Au framework in 3 is in good accordance with the isolobal relation between H+ and Au+ because they share the respective same position in these closely related molecular structures.

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“…Hence for the topomerization process the Re compounds always need a larger formal oxidation state than the corresponding Mn homologues and furthermore, partial contributions of metal and bridging orbitals in the formation of the HOMO is evident. (3) A change from Mn 2 Au 2 to M 1 M 2 Au 2 core (M 1 ≠ M 2 ) prevents the desired isomerization reaction9 .…”

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confidence: 99%

Modern aspects on tri- and tetranuclear cluster complexes supported by phosphido bridges

Haupt

2000

J Chem Sci

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This report on small cluster complexes with metal-metal bonds in the field of coordination chemistry documents results in the following scientific areas. (1) Systematic synthetic routes via ditransition metal carbonyl derivative of manganese and rhenium (group 7) to functionalized triangulo-and tetrahedro-clusters including structural characterization, (2) Dynamic properties of mono-and diauration isomers like M 2 (m-AuPR 3)(m-PCyH)(CO) 8 /M 2 (m-H)(m 3-PCy(AuPR 3))(CO) 8 (isomerization) and M 2 (m-AuPR 3) 2 (m 4-PCy)(CO) 8 /M 2 (m-AuPR 3)(m 3-PCy(AuPR 3))(CO) 8 (M = Mn, Re; R = organic residue) (rearrangement and valence isomerization) and MM¢ (m-H)(m-PCy 2)(m 4-PCy(AuPR 3))(CO) 6 (M = M¢ , M ¹ M¢) (topomerization) going from one to the other homologue and the kinetic study of isomerization in the framework Re 2 (AuPCy 3) 2 (m-PMeN 2 (m-C(Bu)O)(CO) 6 , (3) Correlations of chirality transfer in diastereomeric tetrahedro-clusters Re 2 (M 1 PR 3) 2 (m-PCy 2)(CO) 7 (h 1-L*) (M 1 = coin metals, L* = chiral ligand as (+) or (-) prolinate, for example) from CD data. These selected contributions will be discussed to answer the question "Do small cluster complexes remain as a future challenge in cluster chemistry?"

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Selektive Darstellung zweifach diorganophosphido-verbrückter Metallatetrahedrane [Re2(MPR3)2(μ-PR2)2(CO)6] mit Re2M2-Metallgerüst (M = Au, Ag)

Cited by 7 publications

References 4 publications

Heterometallic Chains and Clusters with Gold-Transition Metal Bonds: Synthesis and Interconversion

Heterometallic Chains and Clusters with Gold-Transition Metal Bonds: Synthesis and Interconversion

Synthesis and Characterization of a Novel Triangular Rh₂Au Cluster Compound Inspired by the Isolobality Concept

Modern aspects on tri- and tetranuclear cluster complexes supported by phosphido bridges

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Selektive Darstellung zweifach diorganophosphido-verbrückter Metallatetrahedrane [Re2(MPR3)2(μ-PR2)2(CO)6] mit Re2M2-Metallgerüst (M = Au, Ag)

Cited by 7 publications

References 4 publications

Heterometallic Chains and Clusters with Gold-Transition Metal Bonds: Synthesis and Interconversion

Heterometallic Chains and Clusters with Gold-Transition Metal Bonds: Synthesis and Interconversion

Synthesis and Characterization of a Novel Triangular Rh2Au Cluster Compound Inspired by the Isolobality Concept

Modern aspects on tri- and tetranuclear cluster complexes supported by phosphido bridges

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Product

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Synthesis and Characterization of a Novel Triangular Rh₂Au Cluster Compound Inspired by the Isolobality Concept