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Borylierung eines wolframgebundenen N2‐Liganden und anschließende Halogenidabstraktion ermöglichen den Zugang zu einem kationischen Komplex mit einem bisher beispiellosen linearen NNBR‐Liganden. Dieser Komplex geht [3+2] Cycloadditionen mit Aziden ein und eine unerwartete Kettenverlängerungsreaktion mit einem Iminoboran, was zu einem Komplex mit einer fünfatomigen B/N‐Kette führt. Diese beiden [NNBR]‐haltigen Komplexe, anorganische Analoga von E. O. Fischers Alkinylcarbinen, sind sehr seltene Beispiele für Moleküle, die rein anorganische Ketten von sp‐hybridisierten Atomen enthalten. [ABSTRACT FROM AUTHOR]

In dieser Publikation stellen wir einen neuartigen Ansatz zur Herstellung eines diskreten Dimers aus chiralem Phthalocyanin (Pc) vor, wobei wir die flexible Molekülgeometrie von Helicenen nutzen, die eine strukturelle Vernetzung und eine starke Aggregationstendenz von Pcs ermöglicht. Die synthetisierte [7]Helicen‐Pc‐Hybrid‐Molekularstruktur, Zink‐[7]Helicenocyanin (Zn‐7HPc), bildet ausschließlich ein stabiles Dimer aus zwei homochiralen Molekülen. Die Dimerisierungskonstanten wurden auf 8.96×106 M−1 bzw. 3.42×107 M−1 in THF bzw. DMSO geschätzt, was auf eine bemerkenswerte Stabilität des Dimers hindeutet. Darüber hinaus zeigt Zn‐7HPc ein chirales Selbstorganisationsverhalten, so dass sich auch in der racemischen Probe bevorzugt ein homochirales Dimer bildet. Die zwei Phthalocyanin‐Untereinheiten in der dimeren Form interagieren stark miteinander, was sich in einer großen Komproportionierungskonstante und der Beobachtung einer IV‐CT‐Bande für den thermodynamisch stabilen gemischt‐valenten Zustand zeigt. [ABSTRACT FROM AUTHOR]

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Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The reductive coupling of an N‐heterocyclic carbene (NHC) stabilized (dibromo)vinylborane yields a 1,2‐divinyldiborene, which, although isoelectronic to a 1,3,5‐triene, displays no extended π conjugation because of twisting of the C2B2C2 chain. While this divinyldiborene coordinates to copper(I) and platinum(0) in an η2‐B2 and η4‐C2B2 fashion, respectively, it undergoes a complex rearrangement to an η4‐1,3‐diborete upon complexation with nickel(0). [ABSTRACT FROM AUTHOR]

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Angewandte Chemie is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)