s-Block metal complexes of 2,4,6-trimercaptotriazine.

Cecconi, Franco; Ghilardi, Carlo A.; Midollini, Stefano; Orlandini, Annabella

doi:10.1016/s0020-1693(02)01196-9

Cited by 37 publications

(36 citation statements)

References 29 publications

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“…[18][19][20][21][22] However, the bonding in all of these clusters is different from that in the clusters described above: two octahedral {M 6 Q 8 } units are bridged by a {M 2 Q 2 } rhomblike Chevrel phase. The formation of atom-centered trigonal prisms has been found in some related anions with interstitial atoms-[W 6 (m 6-Q)Cl 18 ] nÀ (Q = C, n = 0-3; Q = N, n = 1-3), [23] [Nb 6 (m 6 -S)Br 17 ] 3À [24] -and in polymeric chalcohalides of niobium ]Nb 6 (m 6 -S)I 9 ] 1 [25] and molybdenum [Mo 6 (m 6 -Se)I 6 Se] 1 . [26] There are many other clusters, for example carbonyl compounds, with interstitial atoms around which atom-centered trigonal prisms are formed.…”

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confidence: 81%

[Re₁₂CS₁₇(CN)₆]ⁿ⁻ (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

et al. 2005

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The first compound with an octahedral sulfide-cyanide rhenium cluster, KCs 3 [Re 6 S 8 (CN) 6 ], was synthesized ten years ago.[1] Since then, the chemistry of chalcocyanide cluster complexes [Re 6 Q 8 (CN) 6 ] nÀ (Q = S, Se, Te; n = 3, 4) has developed intensively. [2][3][4][5][6] A remarkable feature of the [Re 6 Q 8 (CN) 6 ] nÀ complexes is their ability to coordinate the transition-metal and post-transition-metal atoms through ambidentate CN À ligands. Such coordination leads to the formation of cyanide-bridged polymeric structures with various dimensionalities and architectures. Many complex compounds containing similar octahedral chalcocyanide clusters have now been synthesized and their crystal structures and properties studied in detail. [7] The general approach for the synthesis of rhenium octahedral chalcocyanide complexes is to treat polymeric solids containing {Re 6 [2] as precursors. A few years ago, [9] it was found that ReS 2 and ReSe 2 react with molten KCN to form octahedral rhenium-cluster chalcocyanides with bridging S and Se 2 ligands in polymeric layered K 4 [{Re 6 S 8 }(CN) 4 S 4/2 ] and chainlike K 4 [{Re 6 Se 8 }(CN) 4 -(Se 2/2 ) 2 ] structures. Our further systematic study of phase formation in similar systems has culminated in the discovery of a unique rhenium sulfido-cyanide compound, K 8 [Re 12 CS 17 (CN) 6 ] (1), which contains a C-centered {Re 12 } cluster unit.The diamagnetic compound 1 was prepared by treating ReS 2 with molten KCN with a mass ratio ReS 2 /KCN of 1:2.[10]Single crystals suitable for a structural study were found in the reaction mixture and the single crystal structure of 1 has been solved by X-ray diffraction.[11] The cluster unit of 1 (Figure 1 a) consists of two {Re 6 } octahedra bonded by three m 2 -S bridges and one common m 6 -C atom. Each {Re 6 } cluster is capped by seven m 3 -S atoms and additionally by the centered m 6 -C ligand; thus, a typical octahedral cluster core analogous to {Re 6 Q 8 } (i.e., {Re 6 S 7 C}) is formed. Through such bonding and coordination, we recognize trigonal m 6 -C-centered prisms, {Re 6 C}, in which the triangle faces belong to two adjacent {Re 6 } octahedra. Six outward Re atoms (three from each {Re 6 } cluster unit) are coordinated by CN ligands.The ReÀRe interatomic distances in the {Re 6 S 7 C} fragments are comparable with those of {Re 6 Table 1). These values are within the range for ReÀRe single bonds observed in octahedral rhenium clusters (in [Re 6 (Q 8 (CN) 6 ] 4À mean ReÀRe distances are 2.599, 2.633, and 2.684 for Q = S, Se, and Te, respectively [7a] ). In the trigonal-prismatic {Re 6 C} units, the long Re···Re separations are 3.1576(17), 3.1722(17), and 3.1740(17) . ReÀ (m 3 -S) bond lengths range from 2.401 (6) [13] The mean ReÀ(m 2 -S) bond length of 1, 2.425 is close to ReÀS bond lengths found in numerous Bronger phases. [14] Re À (m 6 -C) bond lengths in the trigonal prism, {Re 6 C}, range from 2.16 (2) 6À anion in 3. For average bond lengths and angles, see Table 1. (Displacement ellipsoids are dra...

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confidence: 81%

[Re₁₂CS₁₇(CN)₆]ⁿ⁻ (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

et al. 2005

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“…The Pb 2 O 10 dimers are linked by the (O 3 PCH 2 NH 2 CH 2 CO 2 ) 2− anions into layers. As in the structure of Pb(pcp) [61], the coordination geometry of the Pb atom in Pb(phca) is a -octahedron (III) ( Table 3). …”

Section: Phosphonates Aminophosphonates and Carboxyphosphonatesmentioning

confidence: 99%

“…Hybrid organic/inorganic metal phosphonates and phosphinates are being intensively studied recently in relation to their possible applications as molecular sieves, selective catalysts, absorbers, ionic exchangers, and matrices for electric and magnetic devices [61]. A number of Pb(II) organo-phosphonates and organophosphinates have been synthesized and structurally investigated.…”

Section: Phosphonates Aminophosphonates and Carboxyphosphonatesmentioning

confidence: 99%

Stereochemistry of lead(II) complexes with oxygen donor ligands

Давидович

Stavila

Marinin

et al. 2009

Coordination Chemistry Reviews

225

132

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“…7) [74]. The reaction affords [Co{Ph 2 PCH 2 P(Ph) 2 PPPP(Ph 2 )PCH 2 PPh 2 }] + (60), which features a unique P 8 -ligand with a zig-zag P 6 -chain formed by the four atom of P 4 and two PPh 2 ends from two distinct dppm ligands which have undergone the nucleophilic attack of the activated tetraphosphorus ligand:…”

Section: Cleavage Of Three P-p Bondsmentioning

confidence: 99%

Metal-Mediated Degradation and Reaggregation of White Phosphorus

Ehses

Romerosa

Peruzzini³

2002

Topics in Current Chemistry

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Dedicated to Professor Otto J. Scherer on the occasion of his 68th birthday A critical survey of the coordination chemistry of white phosphorus illustrating the metalmediated degradation of the P 4 tetrahedron is presented. The underlying principles to account for the activation and stepwise fragmentation of this molecule in the presence of transition metal complexes are presented with emphasis given to mechanistic aspects. A collection of 31 P-NMR spectral data for the known polyphosphorus P x compounds (x £ 4) is also presented and briefly commented.

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s-Block metal complexes of 2,4,6-trimercaptotriazine.

Cited by 37 publications

References 29 publications

[Re₁₂CS₁₇(CN)₆]ⁿ⁻ (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

[Re₁₂CS₁₇(CN)₆]ⁿ⁻ (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

Stereochemistry of lead(II) complexes with oxygen donor ligands

Metal-Mediated Degradation and Reaggregation of White Phosphorus

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s-Block metal complexes of 2,4,6-trimercaptotriazine.

Cited by 37 publications

References 29 publications

[Re12CS17(CN)6]n− (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

[Re12CS17(CN)6]n− (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

Stereochemistry of lead(II) complexes with oxygen donor ligands

Metal-Mediated Degradation and Reaggregation of White Phosphorus

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[Re₁₂CS₁₇(CN)₆]ⁿ⁻ (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom

[Re₁₂CS₁₇(CN)₆]ⁿ⁻ (n=6, 8): A Sulfido–Cyanide Rhenium Cluster with an Interstitial Carbon Atom