Structural Diversity in Thallium Chemistry. Part V

Linden, Anthony; Petridis, Alexander; James, B. D.

doi:10.1002/hlca.200390070

Cited by 8 publications

(14 citation statements)

References 22 publications

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“…11). The structure is very similar to that found when the pyridinium cation (XVII) was employed [1], with the same relative arrangement of cations and anions, a pseudo-[Tl 2 Br 9 ] 3À grouping, similar unit cell dimensions, and the same space group. The two structures could be described as pseudo-isostructural, with the different cations precluding true isostructurality.…”

Section: Results Andsupporting

confidence: 63%

“…All of these features are consistent with the notion that the Br À ion is interacting very slightly with the Tl-atom and distorting the [TlBr 4 ] À tetrahedron towards a [TlBr 5 ] 2À trigonal bipyramid. A similar arrangement of anions to that in compound 4 was found in the 2bromopyridinium (XVIII) salt, where the Br À ion is 4.1546(6) from the Tl-atom, and the [TlBr 4 ] À tetrahedron is also distorted very slightly [1]. In this latter case, the distances of the Tl-and the two pseudo-axial Br-atoms from the least-squares equatorial plane defined by the pseudo-equatorial Br-atoms are 0.6777 (3), À 3.3728 (6), and 3.2551 (5) All three of the potential donor H-atoms of the cation in 4 are involved in NÀH ··· Br H-bonding interactions with neighboring Br À ions.…”

Section: Results Andsupporting

confidence: 52%

“…Secondary bonding between Br À ions and Tl III to give very similar axially distorted trigonal bipyramidal [TlBr 5 ] 2À anions with long Tl ··· Br distances of ca. 3.77 has been found in the structures of the piperazinium (XXI) and 2,2'-bipyridinium (XXII) salts [5], and a slightly shorter Tl ··· Br distance of 3.40 is present in the [TlBr 5 ] 2À anion of the 2-(ammoniomethyl)pyridinium (XXIII) salt [1]. These contrast with the more regular trigonal bipyramidal [TlBr 5 ] 2À species (longest TlÀBr 2.73 -2.92 ) found in the structures of the N,N'diethyl-N,N,N',N'-tetramethylethylene-1,2-diammonium (XXIV) [2] and N,N'-diethyltriethylenediammonium (diethyl-DABCO; XXV) salts [4] and in both polymorphs of the 1,1,4,4-tetramethylpiperazinium (XXVI) compound [4] [6].…”

Section: Results Andmentioning

confidence: 97%

“…In an extensive study, the use of organic cations has led to the characterization of a range of new bromothallate(III) derivatives. A variety of large univalent cations, encompassing a variety of alkyl diammonium cations [2] and heterocyclic cations [1], have yielded bromothallate(III) complexes of differing stoichiometry. These complexes included, in addition to the well-known [TlBr 4 ] À species [3], examples of bromothallate(III) compounds containing unusual mixed salts.…”

mentioning

confidence: 99%

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Structural Diversity in Thallium Chemistry. Part VI

Linden

Petridis

James

2009

Helvetica Chimica Acta

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New bromothallate(III) complexes have been synthesized using eleven organoammonium cations related to others employed previously. The crystal structure determinations of eight of these have been performed. The diethylenetriammonium cation yields the first compound containing [TlBr 6 ] 3À as the only anionic species, while the N,N,N',N'',N''-pentamethyldiethylenetriammonium cation gave a mixed salt containing discrete [TlBr 4 ] À and Br À ions, in which the [TlBr 4 ] À unit does not participate in hydrogen bonding. In the pyrazolinium mixed salt, both the [TlBr 4 ] À and Br À ions are hydrogen-bonded to cations and disposed in an arrangement similar to a [Tl 2 Br 9 ] 3À unit. The triethylenediammonium dication gives a compound in which a highly distorted trigonal bipyramidal [TlBr 5 ] 2À system is present, while the 1benzylpiperazinium compound also shows a very weak [TlBr 4 ] À and Br À interaction. Six other monovalent cations provided [TlBr 4 ] À derivatives that were characterized either crystallographically or via their Raman spectra. In a comprehensive structural summary, the various interactions between cations and bromothallate(III) anionic groupings, giving rise to the structural diversity described in this and previous reports, are discussed in terms of the cation charge, quaternization and steric influence, NÀH ··· Br hydrogen bonding, and secondary bonds present in the compounds.

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Section: Results Andsupporting

confidence: 63%

Section: Results Andsupporting

confidence: 52%

Section: Results Andmentioning

confidence: 97%

mentioning

confidence: 99%

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Structural Diversity in Thallium Chemistry. Part VI

Linden

Petridis

James

2009

Helvetica Chimica Acta

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“…[10][11] So it is difficult to give precise details about the site of coordination on the basis of NMR data (Tables 1 and 2). (Figures 1 and 2).…”

Section: Resultsmentioning

confidence: 99%

Crystal structure of a new polymeric thallium-lasalocid complex: lasalocide anion-thallium(I) containing aryl-Tl interactions

Akkurt¹,

Yıldırım²,

Khardli³

et al. 2008

Arkivoc

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The title complex, [Tl(C 34 H 53 O 8 )] n , forms a pseudo individual monomer complex, in which the anionic oxygen of carboxylate group serves to neutralise the charge of Tl + , the other five O centres of the first lasalocid anionic ligand (Lasa 1) and in which this ligand is pentadentate Oligand and bonded to a second Tl centre by using phenyl-metal coordination. A second lasalocid ligand (Lasa 2) is also pentadentate O-ligand and bridges the first Tl centre within the polymer. The monomeric unit is stabilized by strong intramolecular aryl-Tl type-metal half sandwich bonding interactions.

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Thallium(III) complexes of the metalloligands [Pt2(μ-S)2(PPh3)4] and [Pt2(μ-Se)2(PPh3)4]

Rose

Henderson

Nicholson

et al. 2009

Inorganica Chimica Acta

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Reactions of [Pt 2 (-S) 2 (PPh 3) 4 ] with the diarylthallium(III) bromides Ar 2 TlBr [Ar = Ph and p-ClC 6 H 4 ] in methanol gave good yields of the thallium(III) adducts [Pt 2 (-S) 2 (PPh 3) 4 TlAr 2 ] + , isolated as their BPh 4 salts. The corresponding selenide complex [Pt 2 (-Se) 2 (PPh 3) 4 TlPh 2 ]BPh 4 was similarly synthesised from [Pt 2 (-Se) 2 (PPh 3) 4 ], Ph 2 TlBr and NaBPh 4. The reaction of [Pt 2 (-S) 2 (PPh 3) 4 ] with PhTlBr 2 gave [Pt 2 (-S) 2 (PPh 3) 4 TlBrPh] + , while reaction with TlBr 3 gave the dibromothallium(III) adduct [Pt 2 (-S) 2 (PPh 3) 4 TlBr 2 ] + [TlBr 4 ]-. The latter complex is a rare example of a thallium(III) dihalide complex stabilised solely by sulfur donor ligands. X-ray crystal structure determinations on the complexes [Pt 2 (-S) 2 (PPh 3) 4 TlPh 2 ]BPh 4 , [Pt 2 (-S) 2 (PPh 3) 4 TlBrPh]BPh 4 and [Pt 2 (-S) 2 (PPh 3) 4 TlBr 2 ][TlBr 4 ] reveal a greater interaction between the thallium(III) centre and the two sulfide ligands on stepwise replacement of Ph by Br, as indicated by shorter Tl-S and Pt … Tl distances, and an increasing S-Tl-S bond angle. Investigations of the ESI MS fragmentation behaviour of the thallium(III) complexes are reported.

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Structural Diversity in Thallium Chemistry. Part V

Cited by 8 publications

References 22 publications

Structural Diversity in Thallium Chemistry. Part VI

Structural Diversity in Thallium Chemistry. Part VI

Crystal structure of a new polymeric thallium-lasalocid complex: lasalocide anion-thallium(I) containing aryl-Tl interactions

Thallium(III) complexes of the metalloligands [Pt2(μ-S)2(PPh3)4] and [Pt2(μ-Se)2(PPh3)4]

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