Results 141 to 150 of about 979 (183)

Electrical or Photocontrol of the Rotary Motion of a Metallacarborane

Science, 2004
Rotary motion around a molecular axis has been controlled by simple electron transfer processes and by photoexcitation. The basis of the motion is intramolecular rotation of a carborane cage ligand (7,8-dicarbollide) around a nickel axle. The Ni(III) metallacarborane structure is a transoid sandwich with two pairs ...
M Frederick, Hawthorne, Jeffrey I, Zink, Johnny M, Skelton, Michael J, Bayer, Chris, Liu, Ester, Livshits, Roi, Baer, Daniel, Neuhauser   +7 more
openaire   +2 more sources

Metallacarboranes as a tool for enhancing the activity of therapeutic peptides

Annals of the New York Academy of Sciences, 2019
AbstractMetallacarboranes are anionic boron clusters with high affinity to serum albumin, ability to cross biological membranes, and no apparent toxicity in vitro and in vivo. Thus, conjugation with cobalt bis(1,2‐dicarbollide), [COSAN]−, ([3,3′‐Co(1,2‐C2B9H11)2]−) may improve the properties of therapeutic peptides or proteins at both molecular and ...
Krzysztof Fink, Janusz Boratyński, Maria Paprocka   +2 more
exaly   +3 more sources

A Novel Heterooctametallic Metallacarborane Tetramer

Collection of Czechoslovak Chemical Communications, 1999
The synthesis and X-ray crystal structure determination of [(2,3-Et2C2B4H4)Co(2,3-Et2C2B3H3-5-Bu)Ru]4 (3) are reported. Complex 3 was obtained serendipitously in low yield from a reaction of [(η4-C8H12)Ru(MeCN)4][PF6]2 with the (Et2C2B4H4)Co(Et2C2B3H3Bu)2- anion in THF solution at room temperature.
Keith G. Parker, J. Monte Russell, Michal Sabat, Russell N. Grimes   +3 more
openaire   +1 more source

Metallacarboranes of the C2B4-cage systems

Journal of Cluster Science, 1993
A comprehensive review of the chemistry of polyhedral cluster complexes in whichs,p,d, andf-block metals are incorporated into C2B4-carborane cages to form the respective metallacarboranes is presented. The main focus of the review is directed toward systematizing the chemistry of metallacarboranes in order to promote their use as possible electronic ...
Narayan S. Hosmane, John A. Maguire
openaire   +1 more source

CATALYSIS WITH METALLACARBORANES

1984
The formal 18 electron rhodium(+3) cluster, closo-3, 3-(PPh3)2-3-H-3, 1, 2-RhC2B9H11 (I) and related species are useful catalysts for alkene isomerization, hydrogenation and other reactions under mild conditions. These results appear to be anomalous in view of the stable electron configuration of the rhodium center present in (I).
openaire   +1 more source

Metallocenes and Metallacarboranes

2011
Electrochemical Behaviour of First Row Transition Metal Sandwich Complexes: Metallocenes and MetallacarboranesChapter 5 opens Part 3 on the applicative aspects of inorganic electrochemistry, dealing with two milestones in organometallic chemistry: metallocenes and metallacarboranes.
openaire   +1 more source

Efficient Chemical Modification of Carbon Nanotubes with Metallacarboranes

Chemistry – A European Journal, 2015
AbstractAs‐produced single‐walled carbon nanotubes (SWCNTs) tend to aggregate in bundles due to π–π interactions. Several approaches are nowadays available to debundle, at least partially, the nanotubes through surface modification by both covalent and noncovalent approaches.
Laura, Cabana, Arántzazu, González-Campo, Xiaoxing, Ke, Gustaaf, Van Tendeloo, Rosario, Núñez, Gerard, Tobias   +5 more
openaire   +2 more sources

Advances in the metallacarborane chemistry of f-block elements

Dalton Transactions, 2010
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.
Rashmirekha, Satapathy, Barada Prasanna, Dash, John A, Maguire, Narayan S, Hosmane   +3 more
openaire   +2 more sources

ChemInform Abstract: COMPARISON OF THE REDOX PROPERTIES OF SMALL METALLACARBORANES WITH THOSE OF METALLOCENES AND LARGE METALLACARBORANE CLUSTERS

Chemischer Informationsdienst, 1982
AbstractElektrochemische Untersuchungen an sechs verschiedenen Co‐ und Fe‐Metallacarboran‐Clilstern, die 5 bis 7 Scheitelpunkte enthalten, werden durchgeführt.
W. E. GEIGER, D. E. BRENNAN
openaire   +1 more source

A 12-Vertex Metallacarborane of Silver(I)

Inorganic Chemistry
The discovery of ferrocene in 1951 was a significant landmark in the field of organometallic chemistry, and since then, numerous sandwich- or half-sandwich metallic complexes have been reported. However, silver stands as an intriguing exception in this regard, and knowledge of its bonding situation has remained undisclosed.
Beining Wang, Zhouli Zhu, Mei-Juan Liang, Yun-Kang Ren, Jin-Bian Xue, Jia-Ying Zhang, Fan Qi, Xu-Qiong Xiao   +7 more
openaire   +2 more sources