2009
DOI: 10.1002/chem.200901286
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Lanthanide(II) Complexes of a Dual Functional Tris(2‐pyridyl)stannate Derivative

Abstract: Dual functionality: The reaction of [LiSn(2‐C5H3N‐5‐Me)3(thf)] with [Ln(η5‐C5Me5)2] derivatives results in formation of the first LnII sandwich complexes comprising the anionic tris(pyridyl)‐stannate as a κ3N‐coordinating ligand and featuring “naked” anionic SnII centers, which can be used for subsequent κ1Sn‐metal coordination (example seen here; brown=Eu, red=Sn, yellow=Li).

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Cited by 38 publications
(45 citation statements)
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“…However, this molecule, which could neither be isolated nor detected, may have then reacted further with another equiv of 1 to give the lithium complexes 2 or 3, respectively, by virtue of a donor-acceptor interaction between two low valent group 14 element species. This may be explained with the less steric requirement of the pyridyl ligand as well as the pronounced two-electron donor ability of 1 comparable to other tris(2-pyridyl)stannates [22][23][24]. …”
Section: Resultsmentioning
confidence: 99%
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“…However, this molecule, which could neither be isolated nor detected, may have then reacted further with another equiv of 1 to give the lithium complexes 2 or 3, respectively, by virtue of a donor-acceptor interaction between two low valent group 14 element species. This may be explained with the less steric requirement of the pyridyl ligand as well as the pronounced two-electron donor ability of 1 comparable to other tris(2-pyridyl)stannates [22][23][24]. …”
Section: Resultsmentioning
confidence: 99%
“…However, this molecule, which could neither be isolated nor detected, may have then reacted further with another equiv of 1 to give the lithium complexes 2 or 3, respectively, by virtue of a donor-acceptor interaction between two low valent group 14 element species. This may be explained with the less steric requirement of the pyridyl ligand as well as the pronounced two-electron donor ability of 1 comparable to other tris(2-pyridyl)stannates [22][23][24]. Indeed, the molecular structures of complexes 2 and 3 ( Figure 1, Table 1) imply the donation of a lithium stannate fragment to the central element(II) atom of a E{Sn(2-py 6OtBu )3}2 molecule due to the intramolecular N-coordination of the lithium cation by only one tris(2-pyridyl)stannyl unit in 2 and 3 as found for previously reported tris(2-pyridyl)stannate complexes [22][23][24][25].…”
Section: Resultsmentioning
confidence: 99%
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“…[1][2][3][4][5][6] Preeminent in this area are tris-pyrazolyl borates (Figure 1a), which have found countless applications as ancillary ligands over the last three decades in catalytic and biomimetic systems. [11][12][13][14][15][16][17][18][19][20][21][22][23][24] Despite the ongoing interest in expanding classical tripodal ligand sets,s uch as tris-pyrazolyl borate and tris-2pyridyl ligands,n os tudies have managed to decipher the actual effects of changing the size and electronic character of the bridgehead on structure and reactivity.The preparation of the neutral valence-isoelectronic tris-pryridyl ligands [E(6-Me-2-py) 3 ]( E= As,S b, Bi)h as allowed us to explore this issue for the first time on asingle class of main-group ligands of this type.Surprisingly,t here are no reports of the synthesis or coordination chemistry of tris-2-pyridyl ligands of Sb or Bi. [8][9][10] Our focus in this area has been the exploration of the reactivity and coordination chemistry of Group 13 and 14 tris-2-pyridyl ligands in which metallic or semi-metallic elements are present (like the aluminate shown in Figure 1c).…”
mentioning
confidence: 99%
“…[8][9][10] Our focus in this area has been the exploration of the reactivity and coordination chemistry of Group 13 and 14 tris-2-pyridyl ligands in which metallic or semi-metallic elements are present (like the aluminate shown in Figure 1c). [11][12][13][14][15][16][17][18][19][20][21][22][23][24] Despite the ongoing interest in expanding classical tripodal ligand sets,s uch as tris-pyrazolyl borate and tris-2pyridyl ligands,n os tudies have managed to decipher the actual effects of changing the size and electronic character of the bridgehead on structure and reactivity.The preparation of the neutral valence-isoelectronic tris-pryridyl ligands [E(6-Me-2-py) 3 ]( E= As,S b, Bi)h as allowed us to explore this issue for the first time on asingle class of main-group ligands of this type.…”
mentioning
confidence: 99%