Transcript The Odd Bit of Carbon: Mono and Tricarbido Linked Bimetallics

Department of Chemistry
Seminar Announcement
Date/Time/Venue
Title/Speaker
24 Feb (Thu)
11am – 12nn
The Odd Bit of Carbon: Mono and
Tricarbido Linked Bimetallics
@ S8 Level 3
Executive
Classroom
Professor Anthony F Hill
Australian National University
Host : Asst Prof Ang Wee Han
About the Speaker
Professor Anthony F. Hill graduated from the University of
Auckland with a MSc (Hons) and received his DrRerNat from
the Universität Bayreuth. He has since held positions at the
University of Bristol (1986-1988), the University of Warwick
(1988-1991) and Imperial College (1992-2000) before being
appointed Professor at the Research School of Chemistry of
Australian National University.
Professor Hill is a renowned organometallic chemist who has
published widely in his field. He is the current Head of Inorganic
Chemistry at the premier research institution in Australia (ANU). He is the author
of a textbook on the subject of the organometallic chemistry of the transition
metals and since 1995, has been an editor of Advances in Organometallic
Chemistry, an important review journal in organometallic chemistry, and sits on
the editorial board of Organometallics (ACS) and Dalton Transactions (RSC).
Abstract
The field of bimetallic compounds in which the metals are spanned by a linear
chain of carbon has grown enormously in recent years. However the vast
majority of such compounds have two features in common: (i) The carbon
chains are connected to the metals by single metal-carbon bonds; (ii) The chains
involve an even number of carbon atoms. This may be traced to the synthetic
methodologies which are generally derived from the mature field of organic
alkyne, diyne and polyne synthesis. Effectively, these strategies deliver carbon in
'packets of two'. Compounds with metals linked by an odd number of carbon
atoms are rare because (i) they are synthetically more difficult to obtain and (ii)
simple electron counting requires that at least one metal carbon linkage involves
metal-carbon multiple bonding. This talk will present synthetic strategies for the
synthesis of bimetallic complexes spanned by one or three carbon atoms and a
comparison of their chemistries with those of even-carbon chains.
All are Welcome
Department of Chemistry
Graduate Seminar Announcement
Date/Time/Venue
Title/Speaker
25 Feb (Fri)
11am – 12nn
Metallaboratranes: Metal-Element Dative
Bonding and Masked Metal Bases
@ S8 Level 3
Executive
Classroom
Professor Anthony F Hill
Australian National University
Host : Asst Prof Ang Wee Han
About the Speaker
Professor Anthony F. Hill graduated from the University of
Auckland with a MSc (Hons) and received his DrRerNat from
the Universität Bayreuth. He has since held positions at the
University of Bristol (1986-1988), the University of Warwick
(1988-1991) and Imperial College (1992-2000) before being
appointed Professor at the Research School of Chemistry of
Australian National University.
Professor Hill is a renowned organometallic chemist who has
published widely in his field. He is the current Head of Inorganic
Chemistry at the premier research institution in Australia (ANU). He is the author
of a textbook on the subject of the organometallic chemistry of the transition
metals and since 1995, has been an editor of Advances in Organometallic
Chemistry, an important review journal in organometallic chemistry, and sits on
the editorial board of Organometallics (ACS) and Dalton Transactions (RSC).
Abstract
The classical view of transition metal coordination chemistry involves the metal
acting as a Lewis acid to a collection of electron-pair donor ligands. However, for
sufficiently electron rich metal centres with high d-occupancies, the possibility of
the metal centre acting as a Lewis base arises. For the simples p-black element
boron - the text-book Lewis acid, such a situation was first envisaged in the
1960s but only demonstrated unequivocally with the
isolation of the first metallaboratranes - compounds that feature a trans-annular
dative metalboron bond housed within a cage structure. These compounds were
first obtained adventitiously, however in the interim a wealth of systematic
chemistry has emerged such that they are now represented for all the metals of
groups 8-11.
All are Welcome