@article {46086,
	title = {Stabilization of bis(chlorogermyliumylidene)s within bifunctional PNNP ligand frameworks and their reactivity studies},
	journal = {Dalton Transactions},
	volume = {48},
	year = {2019},
	month = {JUN },
	pages = {7344-7351},
	type = {Article},
	abstract = {<p>The diiminodiphosphine (L-im) and diaminodiphosphines (l-NH and l-NMe) with a bifunctional PNNP ligand framework have been employed to host two [GeCl](+) units leading to the formation of bis(chlorogermyliumylidene) 1-3, respectively. The synthetic route involves a 1:2 stoichiometric reaction between the PNNP ligand and GeCl(2)dioxane and the subsequent addition of two equivalents of chloride abstracting agent. Compound 1 is unstable towards coordinating solvents and Lewis bases, resulting in the displacement of the GeCl unit and the formation of rearranged products 4 and 5. However, the diaminodiphosphine coordinated Ge(ii) bis(monocation)s 2 and 3 proved to be stable and revealed their electrophilic behaviour towards the Lewis bases studied.</p>
},
	issn = {1477-9226},
	doi = {10.1039/c9dt00109c},
	author = {Sahoo, Padmini and Raut, Ravindra K. and Maurya, Devesh and Kumar, Vikas and Rani, Pooja and Gonnade, Rajesh G. and Majumdar, Moumita}
}
@article {47714,
	title = {Stabilization of the elusive antimony(I) cation and its coordination complexes with transition metals},
	journal = {Angewandte Chemie-International Edition},
	volume = {60},
	year = {2021},
	month = {NOV},
	pages = {25522-25529},
	type = {Article},
	abstract = {Upon stabilization by 5,6-bis(diisopropylphosphino)acenaphthene to form compound 1, the fugitive antimony (I) cation exhibited nucleophilic behavior towards coinage metals. Compound 1 was strategically synthesized at room temperature from SbCl3, the bis(phosphine), and trimethylsilyl trifluoromethanesulfonate taken in a 1:2:3 ratio, whereby the bis(phosphine) plays the dual role of a reductant and a supporting ligand. The generation of 1 involves two-electron oxidation of the ligand to form a P-P bonded diphosphonium dication. Compound 1 was separated from this dication to give both products in pure form in moderate yields. Despite the overall positive charge, the Sb-I site in 1 was found to bind to metal centers, forming complexes with Au-I, Ag-I and Cu-I. Compound 1 reduced Cu-II to Cu-I and formed a coordination complex with the resulting Cu-I species. The effects of the electron-rich bis(phosphine) and the constrained peri geometry in stabilizing and enhancing the nucleophilicity of 1 have been rationalized through computational studies.},
	keywords = {antimony(I) cation, coordination modes, nucleophilicity, phosphine ligands, reduction},
	issn = {1433-7851},
	doi = {10.1002/anie.202111339},
	author = {Kumar, Vikas and Gonnade, Rajesh G. and Yildiz, Cem B. and Majumdar, Moumita}
}
