A B–C Double Bond Unit Coordinated to Platinum: An Alkylideneboryl Ligand that Is Isoelectronic to Neutral Aminoborylene Ligands

Brand, Johannes; Braunschweig, Holger; Hupp, Florian; Phukan, Ashwini K.; Radacki, Krzysztof; Sen, Sakya S.

doi:10.1002/anie.201310557

Cited by 19 publications

(16 citation statements)

References 62 publications

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“… Unprecedented alkylideneboryl Pt II methyl complex described by Braunschweig and collaborators (ref. ).…”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 97%

“…Platinum chemistry in conjunction with boron‐based ligands has experienced a remarkable growth in recent years . Leading research in this field has been carried out by Braunschweig's group, culminating in the full characterization of an alkylideneboryl Pt II methyl complex in 2014 (Scheme ) . Efficient oxidative C−H bond cleavage and C–C coupling has recently been documented within the coordination environment of dimethyl‐ and diphenylplatinum(II) fragments stabilized by pyridylborato ligands …”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

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Methyl Complexes of the Transition Metals

Campos

López‐Serrano

Peloso

et al. 2016

Chemistry A European J

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Organometallic chemistry can be considered as a wide area of knowledge that combines concepts of classic organic chemistry, i.e. based essentially on carbon, with molecular inorganic chemistry, especially with coordination compounds. Transition metal methyl complexes probably represent the simplest and most fundamental way to view how these two major areas of chemistry combine and merge into novel species with intriguing features in terms of reactivity, structure, and bonding. Citing more than 500 bibliographic references, this review aims to offer a concise view of recent advances in the field of transition metal complexes containing M-CH3 fragments. Taking into account the impressive amount of data that are continuously provided by organometallic chemists in this area, this review is mainly focused on results of the last 5 years. After a panoramic overview on M-CH3 compounds of groups 3 to 11 which includes the most recent landmark findings in this area, two further sections are dedicated to methyl-bridged complexes and reactivity.

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“… Unprecedented alkylideneboryl Pt II methyl complex described by Braunschweig and collaborators (ref. ).…”

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 97%

Section: Synthesis and Structures: A Systematic Overview Of D‐block Ementioning

confidence: 99%

Methyl Complexes of the Transition Metals

Campos

López‐Serrano

Peloso

et al. 2016

Chemistry A European J

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“…Similar disorder was observed in the starting material 2,i nw hich the bromide and oxoboryl ligands are heavily disordered. [31] In contrast to the lighter analogues, mixing InBr 3 with trans- [44][45][46] The BÀOs tretching frequencies of complex 20 (1758, 1706 cm À1 )a re slightly higher than those of compound trans-[(Cy 3 P) 2 BrPt(BOAlBr 3 )] (6:1 741, 1687 cm À1 )a nd significantly lower than those of trans-[(Cy 3 P) 2 (PhS)Pt(BO)] (10:1 849, 1796 cm À1 ). As previously mentioned for compound 6,t his finding does not correlate with the BÀOb ond distances.…”

Section: Resultsmentioning

confidence: 99%

Platinum Oxoboryl Complexes as Substrates for the Formation of 1:1, 1:2, and 2:1 Lewis Acid–Base Adducts and 1,2‐Dipolar Additions

Bertsch

Brand

Braunschweig

et al. 2015

Chemistry A European J

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The oxoboryl complex trans-[(Cy3 P)2 BrPt(B≡O)] (2) reacts with the Group 13 Lewis acids EBr3 (E=Al, Ga, In) to form the 1:1 Lewis acid-base adducts trans-[(Cy3 P)2 BrPt(B≡OEBr3 )] (6-8). This reactivity can be extended by using two equivalents of the respective Lewis acid EBr3 (E=Al, Ga) to form the 2:1 Lewis acid-base adducts trans-[(Cy3 P)2 (Br3 Al-Br)Pt(B≡OAlBr3 )] (18) and trans-[(Cy3 P)2 (Br3 Ga-Br)Pt(B≡OGaBr3 )] (15). Another reactivity pattern was demonstrated by coordinating two oxoboryl complexes 2 to InBr3 , forming the 1:2 Lewis acid-base adduct trans-[{(Cy3 P)2 BrPt(B≡O)}2 InBr3 ] (20). It was also possible to functionalize the B≡O triple bond itself. Trimethylsilylisothiocyanate reacts with 2 in a 1,2-dipolar addition to form the boryl complex trans-[(Cy3 P)2 BrPt{B(NCS)(OSiMe3 )}] (27).

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“…[4d] The synthesis of the iminoboryl complexes II and III served as inspiration for the later discovery of the related oxoboryl (IV) [5] and alkylideneboryl (V) [6] complexes in our laboratories, both also featuring linear, sp-hybridized boron atoms multiply bound to their attached main-group atoms.…”

Section: Introductionmentioning

confidence: 99%