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• W2026041572 endingPage "7006" @default.
• W2026041572 startingPage "6994" @default.
• W2026041572 abstract "Abstract Treatment of [Ce(Cp*) 2 I] or [U(Cp*) 2 I(py)] with 1 mol equivalent of bipy (Cp*=C 5 Me 5 ; bipy=2,2′‐bipyridine) in THF gave the adducts [M(Cp*) 2 I(bipy)] (M=Ce ( 1 a ), M=U ( 1 b )), which were transformed into [M(Cp*) 2 (bipy)] (M=Ce ( 2 a ), M=U ( 2 b )) by Na(Hg) reduction. The crystal structures of 1 a and 1 b show, by comparing the UN and CeN distances and the variations in the CC and CN bond lengths within the bidentate ligand, that the extent of donation of electron density into the LUMO of bipy is more important in the actinide than in the lanthanide compound. Reaction of [Ce(Cp*) 2 I] or [U(Cp*) 2 I(py)] with 1 mol equivalent of terpy (terpy=2,2′:6′,2′′‐terpyridine) in THF afforded the adducts [M(Cp*) 2 (terpy)]I (M=Ce ( 3 a ), M=U ( 3 b )), which were reduced to the neutral complexes [M(Cp*) 2 (terpy)] (M=Ce ( 4 a ), M=U ( 4 b )) by sodium amalgam. The complexes [M(Cp*) 2 (terpy)][M(Cp*) 2 I 2 ] (M=Ce ( 5 a ), M=U ( 5 b )) were prepared from a 2:1 mixture of [M(Cp*) 2 I] and terpy. The rapid and reversible electron‐transfer reactions between 3 and 4 in solution were revealed by 1 H NMR spectroscopy. The spectrum of 5 b is identical to that of the 1:1 mixture of [U(Cp*) 2 I(py)] and 3 b , or [U(Cp*) 2 I 2 ] and 4 b . The magnetic data for 3 and 4 are consistent with trivalent cerium and uranium species, with the formulation [M III (Cp*) 2 (terpy . − )] for 4 a and 4 b , in which spins on the individual units are uncoupled at 300 K and antiferromagnetically coupled at low temperature. Comparison of the crystal structures of 3 b , 4 b , and 5 b with those of 3 a and the previously reported ytterbium complex [Yb(Cp*) 2 (terpy)] shows that the UN distances are much shorter, by 0.2 Å, than those expected from a purely ionic bonding model. This difference should reflect the presence of stronger electron transfer between the metal and the terpy ligand in the actinide compounds. This feature is also supported by the small but systematic structural variations within the terdentate ligands, which strongly suggest that the LUMO of terpy is more filled in the actinide than in the lanthanide complexes and that the canonical forms [U IV (Cp*) 2 (terpy . − )]I and [U IV (Cp*) 2 (terpy 2− )] contribute significantly to the true structures of 3 b and 4 b , respectively. This assumption was confirmed by the reactions of complexes 3 and 4 with the H . and H + donor reagents Ph 3 SnH and NEt 3 HBPh 4 , which led to clear differentiation of the cerium and uranium complexes. No reaction was observed between 3 a and Ph 3 SnH, while the uranium counterpart 3 b was transformed in pyridine into the uranium( IV ) compound [U(Cp*) 2 {NC 5 H 4 (py) 2 }]I ( 6 ), where NC 5 H 4 (py) 2 is the 2,6‐dipyridyl(hydro‐4‐pyridyl) ligand. Complex 6 was further hydrogenated to [U(Cp*) 2 {NC 5 H 8 (py) 2 }]I ( 7 ) by an excess of Ph 3 SnH in refluxing pyridine. Treatment of 4 a with NEt 3 HBPh 4 led to oxidation of the terpy . − ligand and formation of [Ce(Cp*) 2 (terpy)]BPh 4 , whereas similar reaction with 4 b afforded [U(Cp*) 2 {NC 5 H 4 (py) 2 }]BPh 4 ( 6′ ). The crystal structures of 6 , 6′ and 7 were determined." @default.
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• W2026041572 date "2005-11-15" @default.
• W2026041572 modified "2023-10-18" @default.
• W2026041572 title "Lanthanide(III)/Actinide(III) Differentiation in the Cerium and Uranium Complexes [M(C5Me5)2(L)]0,+ (L=2,2′-Bipyridine, 2,2′:6′,2′′-Terpyridine): Structural, Magnetic, and Reactivity Studies" @default.
• W2026041572 cites W1487301609 @default.
• W2026041572 cites W1539796472 @default.
• W2026041572 cites W1553295875 @default.
• W2026041572 cites W1554389304 @default.
• W2026041572 cites W1813625889 @default.
• W2026041572 cites W1966728951 @default.
• W2026041572 cites W1967130100 @default.
• W2026041572 cites W1968800742 @default.
• W2026041572 cites W1970368702 @default.
• W2026041572 cites W1974407288 @default.
• W2026041572 cites W1974807622 @default.
• W2026041572 cites W1983814897 @default.
• W2026041572 cites W1991773387 @default.
• W2026041572 cites W1992402961 @default.
• W2026041572 cites W1993313103 @default.
• W2026041572 cites W1993363646 @default.
• W2026041572 cites W1996577535 @default.
• W2026041572 cites W1999400527 @default.
• W2026041572 cites W2004086537 @default.
• W2026041572 cites W2010029544 @default.
• W2026041572 cites W2019555318 @default.
• W2026041572 cites W2020007000 @default.
• W2026041572 cites W2020082214 @default.
• W2026041572 cites W2020307177 @default.
• W2026041572 cites W2020944530 @default.
• W2026041572 cites W2031105400 @default.
• W2026041572 cites W2034827574 @default.
• W2026041572 cites W2035578154 @default.
• W2026041572 cites W2040447059 @default.
• W2026041572 cites W2043850739 @default.
• W2026041572 cites W2045893454 @default.
• W2026041572 cites W2047661256 @default.
• W2026041572 cites W2051214273 @default.
• W2026041572 cites W2060385754 @default.
• W2026041572 cites W2067760618 @default.
• W2026041572 cites W2076546523 @default.
• W2026041572 cites W2077994026 @default.
• W2026041572 cites W2080195775 @default.
• W2026041572 cites W2083494937 @default.
• W2026041572 cites W2086398347 @default.
• W2026041572 cites W2088106695 @default.
• W2026041572 cites W2090759468 @default.
• W2026041572 cites W2092146808 @default.
• W2026041572 cites W2093247010 @default.
• W2026041572 cites W2095583759 @default.
• W2026041572 cites W210196302 @default.
• W2026041572 cites W2106683680 @default.
• W2026041572 cites W2127502799 @default.
• W2026041572 cites W2128179591 @default.
• W2026041572 cites W2141127077 @default.
• W2026041572 cites W2163242815 @default.
• W2026041572 cites W2167165107 @default.
• W2026041572 cites W2167590372 @default.
• W2026041572 cites W2322886765 @default.
• W2026041572 cites W245850561 @default.
• W2026041572 cites W2949457268 @default.
• W2026041572 cites W2952139302 @default.
• W2026041572 cites W2953358775 @default.
• W2026041572 cites W328788404 @default.
• W2026041572 cites W4234175685 @default.
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• W2026041572 doi "https://doi.org/10.1002/chem.200500479" @default.
• W2026041572 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16138383" @default.
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