Synthesis and structure of [M3(µ3-Se)(µ-SeS)3]4+ core compounds (M = Mo, W): a less-common type of linkage isomerism for the µ-SSe ligand

Cuboidal Mo3S4 and Mo3NiS4 Complexes Bearing Dithiophosphates and Chiral Carboxylate Ligands: Synthesis, Crystal Structure and Fluxionality

“…[29] The yields were close to quantitative. Sample solutions proved to be stable for days in low-coordinating solvents such as CHCl 3 or CH 2 Cl 2 .…”

“…This ligand arrangement is also found in other carboxylato complexes such as [W 3 S 4 (dtp) 3 (μ-CH 3 COO)(py)] [18] and [Mo 3 Se 4 (dtp) 3 -(μ-CH 3 COO)(py)]. [29] Compound 3 can be described as resulting from the addition of the {Ni-py} fragment to the acetato analogue of 1. This does not change the mutual orientation of the dtp, carboxylato and py ligands in the Mo 3 S 4 moiety.…”

“…In both cluster entities, the cluster core in 1 reveals a distorted Mo 3 triangle, which is typical of an incomplete ligand environment in cuboidal clusters Mo 3 S 4 4+ (see Figure 2). Lactato-bridging coordination produces a distortion of one Mo [29] and with the notable lability of the py ligand as evidenced by ESI mass spectrometry. In [Mo 3 6 ]I the Mo-N bonds are shorter, ranging from 2.28 to 2.33 Å.…”

Crystal Structure, Electronic Structure, and Solid‐State Electrochemistry of Cluster Complexes of M3Se74+(M = Mo, W) with Noninnocento‐Phenanthroline and Se22–Ligands

“…[6][7][8] In the axial interactions of this cluster family, which occur almost without exception, the three chalcogen atoms of the Q 2 ligand, Q ax (3Q ax ···X) lying outside the Mo 3 plane (in our case, Se2; Figure 1b) [9] [Mo 3 SSe 6 {S 2 P(OEt) 2 } 3 ]Cl, [10] and [W 3 S 3 Se 4 {S 2 P-(iPr 2 )} 3 ]Cl. [11] These contacts fall between 2.80 (shortest) and 3.07 (longest) Å. The equatorial interactions (in our case, Se3···Cl) are less frequent and relatively longer.…”

Mo3Q7 (Q = S, Se) Clusters Containing Dithiolate/Diselenolate Ligands: Synthesis, Structures, and Their Use as Precursors of Magnetic Single‐Component Molecular Conductors

“…In this way, it has been possible to isolate mixed‐chalcogen Mo 3 (μ 3 ‐S)(μ‐S ax Se eq ) 3 complexes in which the equatorial atoms are selectively substituted as well as Mo 3 (μ 3 ‐S)(μ‐Se 2 ) 3 compounds. The addition of sulfur to the monochalcogenide‐bridged Mo 3 Se 4 clusters gives Mo 3 (μ 3 ‐Se)(μ 2 ‐Se ax –S eq ) 3 cluster cores 7. In the case of molybdenum and to a lesser extent tungsten, there is a high degree of chalcogen discrimination between the bridging and capping positions, which permits the isolation of pure mixed‐chalcogen compounds.…”