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f-Block Complexes of a M-Terphenyl Dithiocarboxylate Ligand

f-Block Complexes of a M-Terphenyl Dithiocarboxylate Ligand

Michael A Boreen, Bernard F Parker, Stephan Hohloch, Brighton A Skeel, John Arnold

Dalton Trans. 2018 Jan 7;47(1):96-104.

PMID: 29177271

Abstract:

Straightforward syntheses are provided for the m-terphenyl dithiocarboxylic acid 2,6-(C6H4-4-tBu)2C6H3CS2H (TerphCS2H, 2) and its lithium and potassium salts, TerphCS2Li(Et2O)2 and TerphCS2K (1·Et2O and 4, respectively). These compounds can be isolated in good yields on multi-gram scales starting from Terph-I without isolating intermediates. Salt metathesis and protonolysis reactions provided access to the homoleptic actinide(iv) complexes (TerphCS2)4An (An = Th (5) and U (6)). Electrochemical and reactivity studies revealed that the dithiocarboxylate ligand is incompatible with U(iii). The homoleptic lanthanum(iii) complex (TerphCS2)3La and its η6-toluene adduct (7 and 7·tol, respectively) were also structurally characterized. Binding of toluene to 7 was shown to displace intramolecular La-Carene close contacts that are facilitated by a distortion from the usual geometry of bound dithiocarboxylate ligands.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP92068	m-Terphenyl		92-06-8	Price

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