Group VI Metal Carbonyl Complexes of Bis((diphenylphosphino)methyl)diphenylborate and an Assessment of Their Utility for Template Ligand Syntheses

Autor:	Paul J. Fischer, Trent D. Bohrmann, Grace K. Putka, Laura Avena, Michelle C. Neary, Kevin P. Sullivan
Rok vydání:	2014
Předmět:	chemistry.chemical_classification Denticity Chemistry Stereochemistry Ligand Organic Chemistry Metal carbonyl Coordination complex Inorganic Chemistry Metal chemistry.chemical_compound Reagent visual_art visual_art.visual_art_medium Reactivity (chemistry) Physical and Theoretical Chemistry Nonane
Zdroj:	Organometallics. 33:1300-1309
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om5001056
Popis:	Zerovalent group VI metal chemistry of anionic bis((diphenylphosphino)methyl)diphenylborate (Ph2BP2) offers some surprises in comparison to the chemistry of analogous complexes of neutral bidentate phosphines. The enhanced donor ability of Ph2BP2 relative to related bis-PPh2 ligands is confirmed by IR spectral analysis of [ASN][M(CO)4(Ph2BP2)] (ASN = 5-azoniaspiro[4.4]nonane; M = Cr, Mo, W). The mononitriles [ASN][fac-M(CO)3(RCN)(Ph2BP2)] (M = Cr, R = Me; M = Mo, R = Et; M = W, R = Et) are useful reagents for the introduction of sulfur dioxide and isocyanides to the π-basic M(CO)3(Ph2BP2) fragment. While the fundamental coordination chemistry of this anionic fragment mostly mirrors that of its conventional neutral cousins, the electronic impact of Ph2BP2 leads to divergent reactivity in some cases. For example, the sulfur dioxide complexes [ASN][mer-M(CO)3(SO2)(Ph2BP2)] (M = Mo, W) are unreactive toward CH2N2, dramatically different from the case for mer-M(CO)3(SO2)(L2) (L2 = dppm, dppe, dppp). The spectr...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3f6073af3c5b6ff0e0e3acabc7657855 https://doi.org/10.1021/om5001056 Zobrazit plný text záznamu