Zobrazeno 1 - 10
of 904
pro vyhledávání: '"Holger Braunschweig"'
Autor:
Marcel Härterich, Alexander Matler, Rian D. Dewhurst, Andreas Sachs, Kai Oppel, Andreas Stoy, Holger Braunschweig
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract The Fischer carbene synthesis, involving the conversion of a transition metal (TM)-bound CO ligand to a carbene ligand of the form [=C(OR’)R] (R, R’ = organyl groups), is one of the seminal reactions in the history of organometallic chem
Externí odkaz:
https://doaj.org/article/dbab5c0d08d0411180aed3b43ba0cd1d
Autor:
Julian Böhnke, Theresa Dellermann, Mehmet Ali Celik, Ivo Krummenacher, Rian D. Dewhurst, Serhiy Demeshko, William C. Ewing, Kai Hammond, Merlin Heß, Eckhard Bill, Eileen Welz, Merle I. S. Röhr, Roland Mitrić, Bernd Engels, Franc Meyer, Holger Braunschweig
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
Attempts to bend and twist multiple bonds in order to alter their reactivities have thus far been met with only modest success. Here, Braunschweig and colleagues isolate double-bond-containing boron-based species and their 90°-twisted diradical anal
Externí odkaz:
https://doaj.org/article/58a8fc7cef4c4b33ac6d1678b54a97f7
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 6, Pp 867-870 (2017)
The title compound, C23H18FNO4, crystallized as a racemate. It exhibits a cis conformation with respect to the F atom and the methine H atom. The piperidine ring has a screw-boat conformation. The methoxyphenyl ring and the phenyl ring are inclined t
Externí odkaz:
https://doaj.org/article/05515cea89c442f5b10cdea6f9abdab9
Autor:
Holger Braunschweig, Thomas Kramer
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 11, Pp 421-423 (2014)
In the molecular structure of the dinuclear title compound [η5-(C5(CH3)5)(CO)Fe{(μ-BCl)(μ-CO)}PtCl(P(C6H11)3)]·C6H6, the two metal atoms, iron(II) and platinum(II), are bridged by one carbonyl (μ-CO) and one chloridoborylene ligand (μ-BCl). The
Externí odkaz:
https://doaj.org/article/ec8d3e33069649279a610be0d64d651d
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 6, Pp m808-m808 (2012)
In the centrosymmetric molecular structure of the title compound [Pt2(C6H14P)2H2(C9H21P)2], each PtII atom is bound on one side to a phosphane ligand (PiPr3) and a hydrido ligand. On the other side, it is bound to two phosphanide ligands (μ-PiPr2),
Externí odkaz:
https://doaj.org/article/982d2e48d20f4c3cb09d730097984c4b
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 4, Pp m391-m391 (2011)
The title compound, [Zr3(C14H20Si2)3O3], consists of three disila-bridged zirconocene units, which are connected via an oxide ligand, forming a nearly planar six-membered ring with a maximum displacement of 0.0191 (8) Å. The compound was isolated as
Externí odkaz:
https://doaj.org/article/8d22f308a6f34535a225abc5dce63d0e
Autor:
Alexander Damme, Holger Braunschweig
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 12, Pp o3367-o3367 (2010)
In the molecular structure of the title compound, C34H58B2N2, each B atom of the diborane(4) is connected to one dimethylamino group and one Tip ligand (Tip = 2,4,6-triisopropylphenyl). These findings indicate that the increased steric demand of the
Externí odkaz:
https://doaj.org/article/1abe223863bb46029ce577a4c51b6fde
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 3, Pp o610-o610 (2010)
In the molecular structure of the title compound, C27H40N3BBr2, the B atom is connected to two bromide substituents and a guanidinate scaffold, forming a four–membered ring. An aryl group is connected to each N atom in the ring that contains two is
Externí odkaz:
https://doaj.org/article/7fe0b6c74a9548d0aed34383192f03bf
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 11, Pp o2787-o2787 (2009)
In the crystal structure of the title compound, C39H54BCl2P, the phosphorus atom is coordinated by a dichlorophenylborane unit. The substituted biphenyl group and the two cyclohexyl groups at the phosphorus atom are arranged in such a way to avoid st
Externí odkaz:
https://doaj.org/article/b3032473c17849f3aefb46a2e40e657a
Autor:
Matthias Breuning, Tobias Häuser, Christian Mehler, Christian Däschlein, Carsten Strohmann, Andreas Oechsner, Holger Braunschweig
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 5, Iss 1, p 81 (2009)
An enantioselective route to four tricyclic amino acids and N-tosylamides, composed of a central norbornane framework with a 2-endo,3-endo-annelated pyrrolidine ring and a 5-endo-C1 or -C2 side chain, has been developed. A key intermediate was the ch
Externí odkaz:
https://doaj.org/article/7439a4e28c684dd58105c8493d56af6c