Synthesis and molecular structure of the dimagnetic trigonal-bipyrimidal cluster (π-MeC5H4)5V5(μ3-S)6

Binary Vanadium Chalcogenide Complexes

“…The same neutral product [V 4 (Cp′) 4 (µ 3 -S) 4 ] was isolated by Pasynskii et al from the reaction of a solution of [(Cp′) 2 V] with butyl mercaptan in boiling heptane, 95,96 73 Some physical properties of the {V 4 S 4 } core, such as ionization energies and E 1/2 values, have been reported. 98 Related Mo 4 S 4 cubes form the [Mo 4 S 4 (η 5i-PrC 5 H 4 ) 4 ] n-(n ) 0, 1, 2) series.…”

“…The same neutral product [V 4 (Cp‘) 4 (μ 3 -S) 4 ] was isolated by Pasynskii et al from the reaction of a solution of [(Cp‘) 2 V] with butyl mercaptan in boiling heptane, , while [V 4 (Cp) 4 (μ 3 -S) 4 ] 97 was isolated from a mixture of vanadocene and dithioacetic acid. The corresponding selenido and tellurido derivatives [V 4 (Cp) 4 (μ 3 -Se) 4 ], [V 4 (Cp*) 4 (μ 3 -Te) 4 ], and [V 4 (Cp‘) 4 (μ 3 -E) 4 ] (E = Se or Te) were obtained by Herberhold et al either by chalcogen abstraction with P n -Bu 3 or by thermal decomposition …”

“…In 1988, Pasynskii et al isolated [V 5 (Cp‘) 5 (μ 3 -S) 6 ] from a solution of [V(Cp‘) 2 ] and Me 3 CSH. A comparison of the structure of the neutral compound with that of the dication does not reveal any significant difference …”

“…Two compounds containing the V 5 core are described in the literature, [V 5 (Cp‘) 5 (μ 3 -S) 6 ][TCNQ] 2 93 and [V 5 (Cp‘) 5 (μ 3 -S) 6 ]. , In fact, the already reported 93 desulfurization of [V 2 (Cp‘) 2 S 4 ] with P n -Bu 3 gives a mixture of [V 4 (Cp‘) 4 (μ 3 -S) 4 ] and [V 5 (Cp‘) 5 (μ 3 -S) 6 ]. The charge-transfer salt obtained with [V 5 (Cp‘) 5 (μ 3 -S) 6 ] and TCNQ was crystallographically characterized by Rauchfuss and co-workers in 1986 .…”

Pentanuclear Polyhydride Cluster of Ruthenium with Trigonal-Bipyramidal Geometry. Synthesis and Fluxional Behavior

“…The pentaruthenium cluster 2 has tbp geometry. A search of the Cambridge Structural Database found only two structurally well-defined cluster complexes having the tbp geometry . They are an oxo and a sulfido cluster, and compound 2 is the first example that has C 5 R 5 groups as the auxiliary ligands.…”