Direct insertion of sulfur, selenium and tellurium atoms into metallaborane cages using chalcogen powders

Synthesis and characterization of diruthenaborane analogues of pentaborane(11) and hexaborane(10)

“…• Dimetallaboranes, analogues of pentaborane (11) and hexaborane(10), were synthesized and structurally characterized.…”

“…As a result, we and others have synthesized many interesting polyhedral cage compounds that include clusters beyond icosahedral cage [6][7][8][9]. As a part of our interest in synthesizing metallaheteroboranes containing heavier chalcogen atoms, we have recently synthesized a series of group 5, 6 and 9 dimetallaheteroborane clusters, namely, nido- [(CpNb) [10][11][12], by the reactions of metal polychlorides with monoborane reagents in presence of dichalcogenide ligands or chalcogen powders. As structurally characterized examples of diruthenaheteroboranes are rare, we became interested in investigating the use of different chalcogen sources for the generation of new types of cluster systems.…”

Expedient Synthesis of 1,2‐Thiaborines by Means of Sulfur Insertion into Boroles

“…Previous successes in preparing six‐membered boracycles involved the insertion of molecular fragments into the endocyclic B−C bond of pentaarylboroles . Elemental sulfur, commercially available as the cyclic octaatomic allotrope S 8, is known to act as a sulfur atom source for the synthesis of heterocyclic systems . We believed this could be exploited harmoniously with the borole insertion chemistry and conveniently be used to access 1,2‐thiaborine species in a single step.…”

“…[18,19] Elementals ulfur,c ommerciallya vailable as the cyclic octaatomic allotrope S 8, is known to act as as ulfur atom source for the synthesis of heterocyclic systems. [44][45][46][47] We believed this could be exploited harmoniously with the borole insertion chemistry and conveniently be used to access 1,2-thiaborinespecies in as ingle step.…”

Synthesis and characterization of novel eleven-vertex dimetallaheteroborane clusters containing Heavier group 16 elements

“…The Mo1eMo2 bond length of 2.9433(4) Å in 2 is significantly longer than that observed in 5 (2.7437(16) Å) [26] and other molybdaborane clusters [27,28]. The interstitial boron atom (B3) lies 0.359 Å below the Fe1eFe2eB2eFe4eB1 mean plane, bonded to four Fe, three boron and two Mo atoms.…”