15,365 research outputs found
From olefin metathesis to organoruthenium homogeneous catalysis : synthesis, applications and mechanistic understanding
No full textOlefin metathesis is a valuable synthetic tool, widely used in several fields of science. Due to the importance of this transformation several contributions have been made in this field in order to understand mechanistic aspects, reactivity and applicability of this process.
In this topic, ruthenium indenylidene complexes have shown great activity and stability in metathesis, making them very valuable pre-catalysts. However, several aspects of these pre-catalysts have not been evaluated yet. For example, even though reports of active second generation ruthenium indenylidene complexes bearing bulky N-heterocyclic carbenes are present in the literature, no studies have been done to understand how steric hindrance affects the process. For these reasons, [RuCl₂(IPr*)(PPh₃)(3-phenylindenylidene)] (IPr*-PPh₃) and [RuCl₂(IPr*)(Py)(3-phenylindenylidene)] (IPr*-Py), bearing the very bulky ligand, IPr* have been synthesised and compared with [RuCl₂(IPr)(PPh₃)(3-phenylindenylidene)] (IPr-PPh₃) and the new [RuCl₂(IPr)(Py)(3-phenylindenylidene)] (IPr-Py).
Another important aspect, presented in this thesis, is the investigation of the stability of indenylidene pre-catalysts in alcohol solvents. Surprisingly, several different decomposition processes occur depending on the starting complex and the alcohol used. Mechanistic investigation into this decomposition, allowed us to develop a better understanding of this process, and to predict the decomposition product based on the environment. In particular, this study revealed that [RuCl(η⁵-3-phenylindenyl)(PPh₃)₂] (Eta-5) is accessed from [RuCl₂(3-phenylindenylidene)(PPh₃)₂] (M₁₀) via a novel indenylidene to η⁵-indenyl rearrangement. This formal decomposition product has been found to be active in at least 20 different catalytic transformations, rendering it a versatile catalytic tool
P. Nolan, China at the Cross Road
No full textÉtienne Gilbert. P. Nolan, China at the Cross Road. In: Tiers-Monde, tome 46, n°183, 2005. Paysans : modes de survie. p. 719
P. Nolan, China at the Cross Road
No full textÉtienne Gilbert. P. Nolan, China at the Cross Road. In: Tiers-Monde, tome 46, n°183, 2005. Paysans : modes de survie. p. 719
Dimitri Rostoff as Dedalus (centre left), Roman Jasinsky as Icare (centre right), and artists of the company, in Icare, The Original Ballet Russe, Australian tour, His Majesty's Theatre, Melbourne, May 1940 (2) [picture] /
No full textFrom: Icare : choreographic legend in one act / ballet and rhythms by Serge Lifar ; orchestrated by Antal Dorati.; Inscription: "4V/25".; Part of the collection: Hugh P. Hall collection of photographs, 1938-1940.; Choreography by Serge Lifar ; scenery and costumes by Sidney Nolan.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.pic-vn4173895. One of a collection of photographs taken by Hugh P. Hall of 28 ballet productions performed by the Covent Garden Russian Ballet (toured Australia 1938-1939) and the Original Ballet Russe (toured Australia 1939-1940). These are the second and third of the three Ballets Russes companies which toured Australasia between 1936 and 1940. The photographs were taken from the auditorium during a live performance in His Majesty's Theatre, Melbourne and mounted on cardboard for display purposes. For conservation and storage, the photographs have been demounted. The original arrangement of the photographs has been recorded, and details are available from the Pictures Branch of the National Library
Olga Morosova, Sono Osato, and Alexandra Denisova as Greek Maidens (from left to right), in Icare, The Original Ballet Russe, Australian tour, His Majesty's Theatre, Melbourne, May 1940 [picture] /
No full textFrom: Icare : choreographic legend in one act / ballet and rhythms by Serge Lifar ; orchestrated by Antal Dorati.; Inscription: "4V/0".; Part of the collection: Hugh P. Hall collection of photographs, 1938-1940.; Choreography by Serge Lifar ; scenery and costumes by Sidney Nolan.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.pic-vn4173855. One of a collection of photographs taken by Hugh P. Hall of 28 ballet productions performed by the Covent Garden Russian Ballet (toured Australia 1938-1939) and the Original Ballet Russe (toured Australia 1939-1940). These are the second and third of the three Ballets Russes companies which toured Australasia between 1936 and 1940. The photographs were taken from the auditorium during a live performance in His Majesty's Theatre, Melbourne and mounted on cardboard for display purposes. For conservation and storage, the photographs have been demounted. The original arrangement of the photographs has been recorded, and details are available from the Pictures Branch of the National Library
Dimitri Rostoff as Dedalus (far left), Roman Jasinsky as Icare (second from left), Oleg Tupine as a Greek Youth (second from right), and artists of the company as Greek Youths, in Icare, The Original Ballet Russe, Australian tour, His Majesty's Theatre, Melbourne, May 1940 (2) [picture] /
No full textFrom: Icare : choreographic legend in one act / ballet and rhythms by Serge Lifar ; orchestrated by Antal Dorati.; Inscription: "4Y/16".; Part of the collection: Hugh P. Hall collection of photographs, 1938-1940.; Choreography by Serge Lifar ; scenery and costumes by Sidney Nolan.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.pic-vn4173888. One of a collection of photographs taken by Hugh P. Hall of 28 ballet productions performed by the Covent Garden Russian Ballet (toured Australia 1938-1939) and the Original Ballet Russe (toured Australia 1939-1940). These are the second and third of the three Ballets Russes companies which toured Australasia between 1936 and 1940. The photographs were taken from the auditorium during a live performance in His Majesty's Theatre, Melbourne and mounted on cardboard for display purposes. For conservation and storage, the photographs have been demounted. The original arrangement of the photographs has been recorded, and details are available from the Pictures Branch of the National Library
Dimitri Rostoff as Dedalus (centre front), Genevieve Moulin, Olga Morosova, Sono Osato, and Alexandra Denisova as Greek Maidens (from left to right), and artists of the company, in Icare, The Original Ballet Russe, Australian tour, His Majesty's Theatre, Melbourne, May 1940 (1) [picture] /
No full textFrom: Icare : choreographic legend in one act / ballet and rhythms by Serge Lifar ; orchestrated by Antal Dorati.; Inscription: "4V/9".; Part of the collection: Hugh P. Hall collection of photographs, 1938-1940.; Choreography by Serge Lifar ; scenery and costumes by Sidney Nolan.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.pic-vn4173865. One of a collection of photographs taken by Hugh P. Hall of 28 ballet productions performed by the Covent Garden Russian Ballet (toured Australia 1938-1939) and the Original Ballet Russe (toured Australia 1939-1940). These are the second and third of the three Ballets Russes companies which toured Australasia between 1936 and 1940. The photographs were taken from the auditorium during a live performance in His Majesty's Theatre, Melbourne and mounted on cardboard for display purposes. For conservation and storage, the photographs have been demounted. The original arrangement of the photographs has been recorded, and details are available from the Pictures Branch of the National Library
Roman Jasinsky as Icare, in Icare, The Original Ballet Russe, Australian tour, His Majesty's Theatre, Melbourne, May 1940 (4) [picture] /
No full textFrom: Icare : choreographic legend in one act / ballet and rhythms by Serge Lifar ; orchestrated by Antal Dorati.; Inscription: "4Y/24".; Part of the collection: Hugh P. Hall collection of photographs, 1938-1940.; Choreography by Serge Lifar ; scenery and costumes by Sidney Nolan.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.pic-vn4173907. One of a collection of photographs taken by Hugh P. Hall of 28 ballet productions performed by the Covent Garden Russian Ballet (toured Australia 1938-1939) and the Original Ballet Russe (toured Australia 1939-1940). These are the second and third of the three Ballets Russes companies which toured Australasia between 1936 and 1940. The photographs were taken from the auditorium during a live performance in His Majesty's Theatre, Melbourne and mounted on cardboard for display purposes. For conservation and storage, the photographs have been demounted. The original arrangement of the photographs has been recorded, and details are available from the Pictures Branch of the National Library
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