Advances in the metallacarborane chemistry of f-block elements

Abstract

The role of carborane clusters in organometallic chemistry is diverse. A number of carborane cage systems such as C(2)B(4), C(2)B(9) and C(2)B(10) clusters have been extensively used for the synthesis of numerous metallacarboranes of s, p, d and f-block elements. An introduction to the chemistry of metallacarboranes is provided with an emphasis on the recent advances on the metallacarboranes of f-block elements.

“Click” Chemistry-Mediated Phenylene-Cored Carborane Dendrimers

“…4 Carboranes are relatively easy to functionalize, resistant to biodegradation, and boron-rich in nature. 5,6 Therefore, carboranes are useful in medicinal chemistry as a source of boron and as pharmacophores. 6 Dendritic structures containing multiple carborane clusters have been synthesized by employing various synthetic approaches.…”

Boron, aluminium, gallium, indium and thallium

“…Advances in the chemistry of f-block-containing metallacarborane systems have been reviewed. 75 The synthesis of 10-vertex, ferra mono-and di-carborane systems, {FeC 2 B 7 } 76 and {FeCB 8 } 77 systems have been reported, as have a series of 12-vertex ferratricarbaborane {FeC 3 B 8 } systems. 78 Reaction of nine-vertex [closo-1-CB 8 H 9 ] À with sources of ''{M(PEt 3 ) 2 } + '' (M = Rh or Pt) leads to the formation of double cluster metallacarboranes of general formulation [M(PEt 3 )-CB 8 H 9 ] 2 , the gross molecular structures of which are related to that of the {B 20 H 18 } cluster.…”

Scandium, yttrium, the lanthanides

“…20 Responsive MRI contrast agents have been reviewed, 21 also covered are challenges for MRI, 22 new types of Gd 3+ probes 23 and alternatives to Gd chelates for MRI. 24 Yttrium radiopharmaceuticals have been surveyed, 25 whilst organometallic chemistry reviews cover dimethylaminobenzyl compounds; 26 selective hydroalkoxylation and hydrothiolation catalysts; 27 non-classical divalent complexes; 28 allyl complexes; 29 reactions of aromatic N-heterocycles with diamide complex-supported lanthanide alkyls; 30 dialkyl-derived polymerization catalysts and hydride clusters; 31 advances in lanthanide metallacarboranes 32 and scorpionate-supported lanthanide polyhydrides. 33 Other surveys cover guanidinate and amidopyridinate complexes; 34 hydrides of Sm and Eu; 35 and synthesis and assembly of rare earth nanostructures.…”