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• W2026780055 endingPage "72" @default.
• W2026780055 startingPage "43" @default.
• W2026780055 abstract "The bis-cyclopentadienyl hydride chemistry of the elements niobium and tantalum has been dominated by the family of trihydride complexes, namely Cp2MH3 (M=Nb, Ta, Cp=C5H5, C5Me5, C5H4SiMe3, C5H3(SiMe3)2 and related substituted cyclopentadienyl rings). The chemical and spectroscopic properties of these complexes are strongly influenced by both the nature of the Cp ring and the metal center. In some cases, anomalous NMR spectroscopic behavior has been observed, and values of JHH that are largely dependent on the temperature have been found. This behavior can be modulated by means of the interaction of the trihydride complexes with Group 11 metal fragments, and in some cases HH interactions in the molecules can be observed. Several X-ray crystal structure determinations of this kind of complex, as well as different theoretical calculations, have been performed in order to gain a deeper insight into these systems. The reactivity of the trihydride metallocene complexes has been extensively considered. Thus, the easy elimination of H2 from the Cp2MH3 species, giving rise to the unsaturated species Cp2MH, has been used to study the activation processes of several kinds of HX bond, in hydrosilanes, hydrogermananes, etc., which allows the synthesis of complexes such as Cp2MH2X. This type of complex has been extensively studied, especially when X=SiR3, because in several cases these complexes exhibit a special hypervalence behavior. A large family of complexes of stoichiometry Cp2MHL was prepared from the reaction of the Cp2MH3 complexes with different classes of π-acid ligands, L. The Cp2MHL complexes can undergo insertion reactions into the MH bond with several classes of unsaturated molecules, and such processes are of interest in the field of organic synthesis. Furthermore, the protonation processes of the Cp2MHL complexes give rise to a new family of η2-H2-containing cationic species, Cp2M(η2-H2)L+, which are stable at low temperatures. The NMR data of such compounds indicate that it is possible to block the rotation of the H2 molecule at low temperatures. Of particular interest are the Cp2MH(olefin) complexes, and these have been widely studied because they can be considered as excellent models for the study of the β-elimination reaction and the reverse olefin insertion process. Finally, from the trihydride derivatives Cp2MH3 and related species, several heterometallic complexes have been prepared and characterized." @default.
• W2026780055 created "2016-06-24" @default.
• W2026780055 creator A5036890138 @default.
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• W2026780055 creator A5081833446 @default.
• W2026780055 date "1999-10-01" @default.
• W2026780055 modified "2023-10-17" @default.
• W2026780055 title "Advances in the chemistry of bis-cyclopentadienyl hydride derivatives of niobium and tantalum" @default.
• W2026780055 cites W1489347438 @default.
• W2026780055 cites W1584028161 @default.
• W2026780055 cites W1963580539 @default.
• W2026780055 cites W1964467252 @default.
• W2026780055 cites W1965526283 @default.
• W2026780055 cites W1965528442 @default.
• W2026780055 cites W1965711861 @default.
• W2026780055 cites W1965725268 @default.
• W2026780055 cites W1968327091 @default.
• W2026780055 cites W1974739893 @default.
• W2026780055 cites W1975112622 @default.
• W2026780055 cites W1976604094 @default.
• W2026780055 cites W1978905862 @default.
• W2026780055 cites W1981721880 @default.
• W2026780055 cites W1981991164 @default.
• W2026780055 cites W1983398340 @default.
• W2026780055 cites W1983617117 @default.
• W2026780055 cites W1984183100 @default.
• W2026780055 cites W1984626597 @default.
• W2026780055 cites W1985852514 @default.
• W2026780055 cites W1986266546 @default.
• W2026780055 cites W1987005237 @default.
• W2026780055 cites W1987134431 @default.
• W2026780055 cites W1987787587 @default.
• W2026780055 cites W1988975866 @default.
• W2026780055 cites W1989511405 @default.
• W2026780055 cites W1991133856 @default.
• W2026780055 cites W1991491583 @default.
• W2026780055 cites W1994884720 @default.
• W2026780055 cites W1995502852 @default.
• W2026780055 cites W1997003411 @default.
• W2026780055 cites W1997959560 @default.
• W2026780055 cites W1998858311 @default.
• W2026780055 cites W2002994775 @default.
• W2026780055 cites W2004561754 @default.
• W2026780055 cites W2005337841 @default.
• W2026780055 cites W2005762049 @default.
• W2026780055 cites W2006554662 @default.
• W2026780055 cites W2007733468 @default.
• W2026780055 cites W2008872937 @default.
• W2026780055 cites W2012119519 @default.
• W2026780055 cites W2015339255 @default.
• W2026780055 cites W2017033936 @default.
• W2026780055 cites W2017604644 @default.
• W2026780055 cites W2017815565 @default.
• W2026780055 cites W2019534119 @default.
• W2026780055 cites W2020414998 @default.
• W2026780055 cites W2021619927 @default.
• W2026780055 cites W2023103047 @default.
• W2026780055 cites W2023556181 @default.
• W2026780055 cites W2025571784 @default.
• W2026780055 cites W2029411400 @default.
• W2026780055 cites W2030334961 @default.
• W2026780055 cites W2033261961 @default.
• W2026780055 cites W2033901221 @default.
• W2026780055 cites W2034201385 @default.
• W2026780055 cites W2034396103 @default.
• W2026780055 cites W2035681607 @default.
• W2026780055 cites W2036146015 @default.
• W2026780055 cites W2037491121 @default.
• W2026780055 cites W2038135062 @default.
• W2026780055 cites W2040371083 @default.
• W2026780055 cites W2042829455 @default.
• W2026780055 cites W2044194870 @default.
• W2026780055 cites W2046670244 @default.
• W2026780055 cites W2047948804 @default.
• W2026780055 cites W2049745866 @default.
• W2026780055 cites W2050490591 @default.
• W2026780055 cites W2052918528 @default.
• W2026780055 cites W2053305138 @default.
• W2026780055 cites W2053717925 @default.
• W2026780055 cites W2054481070 @default.
• W2026780055 cites W2056021428 @default.
• W2026780055 cites W2056051109 @default.
• W2026780055 cites W2059326094 @default.
• W2026780055 cites W2060625306 @default.
• W2026780055 cites W2062151390 @default.
• W2026780055 cites W2062198575 @default.
• W2026780055 cites W2062732471 @default.
• W2026780055 cites W2063162095 @default.
• W2026780055 cites W2066400928 @default.
• W2026780055 cites W2069070890 @default.
• W2026780055 cites W2070051202 @default.
• W2026780055 cites W2070429426 @default.
• W2026780055 cites W2070529333 @default.
• W2026780055 cites W2071064786 @default.
• W2026780055 cites W2071475415 @default.

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