Solution chemistry of arsenic selenides: Synthesis, spectroscopy and the x-ray structures of [PPh4]2[As Se6], n = 2,4

Ansari, Mohammad A.; Ibers, James A.; O'neal, S. C.; Pennington, William T.; Kolis, Joseph W.

doi:10.1016/s0277-5387(00)83735-3

Cited by 55 publications

(29 citation statements)

References 18 publications

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“…15a) in all of these compounds. Whereas an endo-endo arrangement has also been established for the analogous As 4 Se 6 2− anion in (Ph 4 P) 2 As 4 Se 6 [73], the alternative endo-exo variant (Fig. 15b) has been found in [K(2.2.2-crypt)] 2 As 4 Se 6 [23].…”

Section: Lower Oxidation State Chalcogenidoarsenatesmentioning

confidence: 79%

“…15b with its two exocyclic As-Se bonds. It is interesting to note that the As 4 Se 6 2− anion can be detected by 77 Se NMR spectroscopy immediately after As 4 Se 4 is dissolved in ethylenediamine, and that (Ph 4 P) 2 As 4 Se 6 can be isolated from the resulting solution following addition of (Ph 4 P)Br [73]. Preparation of (pipH) 2 As 4 S 6 was achieved in a similar manner by treatment of a solution of realgar in CH 3 NH(CH 2 ) 2 OH with piperidine [86].…”

Section: Lower Oxidation State Chalcogenidoarsenatesmentioning

confidence: 99%

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Review. Solvothermal Synthesis and Structure of Chalcogenidoarsenate Anions

Kromm

Almsick

Sheldrick

2010

Zeitschrift Für Naturforschung B

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A rich variety of chalcogenidoarsenate anions and ligands have been prepared under mild solvothermal conditions in strongly polarizing solvents such as water, methanol and amines in the temperature range 100 -200 • C. This review covers synthetic and structural aspects of such species As x E y z− with particular emphasis being placed on the trends and differences observed for E = S, Se, Te and on developments within the past decade. These include the preparation of quaternary Main Group element chalcogenidoarsenates(III) such as Cs 3 AsGeSe 5 and polymeric selenidoarsenates(II, III) such as Cs 2 As 4 Se 6 . A currently expanding area of interest involves the employment of transition metal-polyamine or -polyimine fragments such as {Mn(tren)} 2+ or {Mn(terpy)} 2+ as structuredirecting agents. The metal atoms of such cations can be connected to the terminal chalcogen atoms of oligomeric or polymeric anions As x E y z− to prevent their further condensation or can be directly incorporated into anionic or neutral networks when at least two free coordination sites are available in the fragment. This strategy has led to the characterization of novel ligands including cyclo-

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Section: Lower Oxidation State Chalcogenidoarsenatesmentioning

confidence: 79%

Section: Lower Oxidation State Chalcogenidoarsenatesmentioning

confidence: 99%

Review. Solvothermal Synthesis and Structure of Chalcogenidoarsenate Anions

Kromm

Almsick

Sheldrick

2010

Zeitschrift Für Naturforschung B

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“…[As 2 Se 6 ] 2À contains a six-membered As 2 Se 4 ring in the chair conformation with a centrosymmetric structure and has two sets of As-Se bond lengths. Terminal As-Se t bonds are shorter than bridging As-Se b bonds ( [44][45][46][47][48]. In 3, each [Co(phen) 3 …”

Section: Crystal Structuresmentioning

confidence: 99%

“…[As 2 Se 6 ] 2À , which is formed by two AsSe 3 trigonal pyramids via two Se-Se bonds, is the most common polyselenidoarsenate. Beside [As 2 Se 6 ] 2À compounds with organic counter cations[44][45][46][47][48], the [As 2 Se 6 ] 2À anions were also obtained with TM complex cations,…”

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confidence: 99%

Solvent effect on condensation of pyramidal [AsSe₃]^3–: solvothermal syntheses of new selenidoarsenates containing transition metal(II) complexes with 1,10-phenanthroline

Chen

Tang

Jiang

et al. 2012

Journal of Coordination Chemistry

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2012) Solvent effect on condensation of pyramidal [AsSe 3 ] 3-: solvothermal syntheses of new selenidoarsenates containing transition metal(II) complexes with 1,10-phenanthroline, Journal of Coordination Chemistry, 65:18, 3316-3328, The reactions As 2 O 3 , Se and 1,10-phenanthroline (phen) with NiCl 2 and ZnCl 2 in water at 140 C for 5 days afforded selenidoarsenates [Ni(phen) 3 ] 2 [As 8 Se 14 ] (1) and [Zn(phen) 3 ] 2 [As 8 Se 14 ] (2), respectively. The reactions with CoCl 2 and NiCl 2 in CH 3 OH aqueous solution produced polyselenidoarsenates [Co(phen) 3 ][As 2 Se 6 ] (3) and [Ni(phen) 3 ][As 2 Se 6 ] (4). All transition metal ions are octahedrally coordinated by six nitrogen atoms and all arsenics are trigonal pyramidally coordinated by three seleniums. In 1 and 2, eight [AsSe 3 ] 3À trigonal pyramids joined via edge-sharing to form [As 8 Se 14 ] 4À with condensation grade of 0.571. [As 8 Se 14 ] 4À contains two As 3 Se 3 and one As 6 Se 6 heterocycles. The formations of the selenidoarsenate anion [As 8 Se 14 ] 4À in 1 and 2 and polyselenidoarsenate [As 2 Se 6 ] 2À in 3 and 4 show solvent effect on condensation of trigonal bipyramidal [AsSe 3 ] 3À units under solvothermal conditions.

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“…The Se-As-Se bond angles are in the range between 92.26(3)°and 101.52(3)°. Although the [As 2 Se 6 ] 2À anion has been previously characterized as the [Na (2,2,2-cryptand)] + [14], [PPh 4 ] + [15], and [NEt 4 ] + [16] salts, we can present this anion for the first time co-crystallized to tm complexes. The geometries of the anion in 2 and 3 are consistent with those reported in the literature.…”

mentioning

confidence: 94%

Syntheses, structures and properties of three selenoarsenates templated by transition metal complexes

Liu

et al. 2005

Inorganic Chemistry Communications

112

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Solution chemistry of arsenic selenides: Synthesis, spectroscopy and the x-ray structures of [PPh4]2[As Se6], n = 2,4

Cited by 55 publications

References 18 publications

Review. Solvothermal Synthesis and Structure of Chalcogenidoarsenate Anions

Review. Solvothermal Synthesis and Structure of Chalcogenidoarsenate Anions

Solvent effect on condensation of pyramidal [AsSe₃]^3–: solvothermal syntheses of new selenidoarsenates containing transition metal(II) complexes with 1,10-phenanthroline

Syntheses, structures and properties of three selenoarsenates templated by transition metal complexes

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Solution chemistry of arsenic selenides: Synthesis, spectroscopy and the x-ray structures of [PPh4]2[As Se6], n = 2,4

Cited by 55 publications

References 18 publications

Review. Solvothermal Synthesis and Structure of Chalcogenidoarsenate Anions

Review. Solvothermal Synthesis and Structure of Chalcogenidoarsenate Anions

Solvent effect on condensation of pyramidal [AsSe3]3–: solvothermal syntheses of new selenidoarsenates containing transition metal(II) complexes with 1,10-phenanthroline

Syntheses, structures and properties of three selenoarsenates templated by transition metal complexes

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Solvent effect on condensation of pyramidal [AsSe₃]^3–: solvothermal syntheses of new selenidoarsenates containing transition metal(II) complexes with 1,10-phenanthroline