Boron Beyond the Icosahedral Barrier: A 16‐Vertex Metallaborane

Abstract

Supporting information for this article (including details of experimental and computational studies, and the crystal data for compounds 1 and 2) is available on the WWW under http://dx.doi.

Reactivity of Diruthenium and Dirhodium Analogues of Pentaborane(9): Agostic versus Boratrane Complexes

“…The field of transition‐metal–boron chemistry, comprising a wide range of compounds from higher‐nuclearity metallaborane clusters to complexes with a single boron atom, has undergone a renaissance over the past few decades 1. 2 Complexes with a wide variety of coordination modes have been isolated and structurally characterized,1–5 for example, σ‐borane,3, 4 boryl,1a and borylene complexes,1a metallaboranes,1b, 2 metallaboratranes,5 and more 1a. 3c, 4b Among the various novel types recognized, the electron‐precise transition‐metal agostic and σ‐borane complexes (Scheme ), in which borane σ‐donation to the metal center dominates over π‐back‐donation, have been a subject of regular importance 3.…”

Reactivity of Diruthenium and Dirhodium Analogues of Pentaborane(9): Agostic versus Boratrane Complexes

“…This new route offers a very efficient method for the isolation of bis(s-borate) and agostic complexes from diruthenapentaborane(9).The field of transition-metal-boron chemistry, comprising a wide range of compounds from higher-nuclearity metallaborane clusters to complexes with a single boron atom, has undergone a renaissance over the past few decades. [1,2] Complexes with a wide variety of coordination modes have been isolated and structurally characterized, [1][2][3][4][5] for example, s-borane, [3,4] boryl, [1a] and borylene complexes, [1a] metallaboranes, [1b, 2] metallaboratranes, [5] and more. [1a, 3c, 4b] Among the various novel types recognized, the electron-precise transition-metal agostic and s-borane complexes (Scheme 1), in which borane s-donation to the metal center dominates over p-back-donation, have been a subject of regular importance.…”

Synthesis and X-ray characterization of 15- and 16-vertex closo-carboranes

“…Such a breakthrough relied on the use of relatively weaker reducing compounds, CAd (carbon atoms-adjacent) nido-carborane dianions or arachno-carborane tetraanions 17 , as starting materials for polyhedral expansion reactions 18,19 . A number of 13-and 14vertex closo-carboranes were prepared and structurally characterized [20][21][22][23][24][25][26][27][28][29] . They showed some unique characteristics.…”