The mononuclear and dinuclear dimethoxyethane adducts of lanthanide trichlorides [LnCl3(DME)2]n, n=1 or 2, fundamental starting materials in lanthanide chemistry: preparation and structures

Baisch, Ulrich; Dell’Amico, Daniela Belli; Calderazzo, Fausto; Conti, Roberto; Labella, Luca; Marchetti, Fabio; Quadrelli, Elsje Alessandra

doi:10.1016/j.ica.2003.11.011

Cited by 44 publications

(23 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…32 The interatomic CoCl (bridging) distances in the polymeric complex 2 are in a wide range from 2.266(1) to 2.500(1) Å (Table 3) due to connections of different polyhedra by single and double chloride bridges. A similar variety of interatomic CoCl (bridging) distances was found in polymeric complexes [Co 4 (-Cl) 6 Cl 2 (thf) 4 (MeOH) 2 ] n (2.2861(7) 2.5488(7) Å) 32 and [Co(daa) 2 (-Cl) 2 CoCl 2 ] n (2.295(2) 2.455(2) Å). 21 The average CoCl (bridging) distances in the dinuclear complexes 1 and 3 are in the same range; approximately 2.32 Å to tetrahedral Co2 and 2.44 Å to octahedral Co1.…”

Section: Crystal Structure Of the Polymeric Complex 1 2 Andsupporting

confidence: 60%

“…31 An alternating tetrahedral and octahedral coordination of cobalt ions was found in chains of [Co 4 (-Cl) 6 Cl 2 (thf) 4 (MeOH) 2 ] n 32 and [Co (daa) 2 (-Cl) 2 CoCl 2 ] n (daa = 4-hydroxy-4-methyl-2-pentanon). 21 Tetrahedral Co(II) sites are coordinated only by chlorides, while O-donor ligands and bridging chlorides are coordinated to octahedral Co(II) sites in the complexes 2, [Co 4 (-Cl) 6 Cl 2 (thf) 4 21 and [Co 4 (-Cl) 6 Cl 2 (thf) 4 (MeOH) 2 ] n (2.251(3) Å). 32 The interatomic CoCl (bridging) distances in the polymeric complex 2 are in a wide range from 2.266(1) to 2.500(1) Å (Table 3) due to connections of different polyhedra by single and double chloride bridges.…”

Section: Crystal Structure Of the Polymeric Complex 1 2 Andmentioning

confidence: 99%

“…A similar distance between two six-coordinated cobalt ions was found in the complex [Co 2 Cl 2 (meg) 4 ]Cl 2 (megethane-(1,2)-diol; (3.470(1) Å). 33 Single chloride bridges connecting four-and six-coordinate cobalt ions resulted in significantly longer metal to metal distances in the complexes 2 (Table 4, Co1··· Co2), [Co(daa) 2 (-Cl) 2 CoCl 2 ] n (3.949(2), 3.967(2) Å) 21 and [Co 4 (-Cl) 6 Cl 2 (thf) 4 (MeOH) 2 ] n (4.143(3) Å).…”

Section: Crystal Structure Of the Polymeric Complex 1 2 Andmentioning

confidence: 99%

See 2 more Smart Citations

Octahedral and Tetrahedral Cobalt(II) Sites in Cobalt Chloride Complexes with Polyethers

Petriček¹

2011

Croat. Chem. Acta

View full text Add to dashboard Cite

Abstract. A reaction of cobalt chloride hexahydrate with dimethoxyethane (dme) resulted in a dinuclear complex [CoCl 2 (dme)] 2 (1). The complex 1 reacted with di(2-methoxyethyl) ether (diglyme) in tetrahydrofuran (thf) solvent achieving polymeric [Co 2 Cl 4 (diglyme)] n (2). A reaction of cobalt chloride hexahydrate, diglyme and (CH 3 ) 3 SiCl in thf yielded the crystals of [Co 2 Cl 4 (diglyme)(thf)] (3). Both, tetrahedral and octahedral environments of cobalt ions were found in each of the complexes, 1, 2 and 3. Cobalt ions display a distorted octahedral geometry with bridging chlorides and terminal oxygen atoms from ether ligands and a distorted tetrahedral geometry with non-bridging and bridging chlorides. A four-and a sixcoordinate cobalt ion are linked by a double chloride bridge in the dinuclear complexes 1 and 3. Two tetrahedral or two octahedral cobalt ions in 2 are connected by double chloride bridges in dinuclear units which are linked to infinite chains by single chloride bridges. (doi: 10.5562/cca1747)

show abstract

Section: Crystal Structure Of the Polymeric Complex 1 2 Andsupporting

confidence: 60%

Section: Crystal Structure Of the Polymeric Complex 1 2 Andmentioning

confidence: 99%

Section: Crystal Structure Of the Polymeric Complex 1 2 Andmentioning

confidence: 99%

See 1 more Smart Citation

Octahedral and Tetrahedral Cobalt(II) Sites in Cobalt Chloride Complexes with Polyethers

Petriček¹

2011

Croat. Chem. Acta

View full text Add to dashboard Cite

show abstract

“…in the literature: [LnCl 3 (dme) n ] (Ln ¼ Lu, Y, Sm, Dy; n ¼ 2 and Ln ¼ La, Nd; n ¼ 1) [26], PhC(Me) 2 NH 2 [11], (S)-PhCH(Me)NMe 2 [13]. Following reagents: formic acid, 37% aq.…”

Section: Experimental Partmentioning

confidence: 99%

Dramatic enhancement of the stability of rare-earth metal complexes with α-methyl substituted N,N-dimethylbenzylamine ligands

Petrov

Thomas

Harms

et al. 2010

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

“…und anschließendes Abrauchen bei 90 °C hergestellt. Die sich anschließende Entwässerung wurde nach der Methode von Baisch et al 32. mit Thionylchlorid in THF durchgeführt.…”

Section: Experimenteller Teilunclassified

Neuartige Cyclopentadienyl‐N‐silylphosphazen‐Komplexe der Seltenerdmetalle Yttrium und Lutetium

Hillesheim

Elfferding

Linder

2010

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

We report the investigation of four new monoanionic cyclopentadienyl‐N‐silylphosphazene ligands [C5R4‐SiMe2‐NPR′3]– (CpSiNP–) 1–4. In this system the amido moiety of the classical dianionic chelate ligand (CpSiN2–) is displaced by an isoelectronic phosphazene donor function (CpSiNP–). The iminophosphorane‐functionalized tetramethylcyclopentadiene ligands have been prepared by the reaction of two equivalents of tris(tert‐butyl)iminophosphorane or tris(dimethylamino)iminophosphorane with tetramethyl or tert‐butyl‐substituted chlorodimethylsilyl‐1,3‐cyclopentadiene. The molecular structures of the protonated species of two representatives 1‐H and 2‐H were established by X‐ray diffraction analysis. Furthermore the metallation of the ligand [C5R4‐SiMe2‐NPtBu3]H (2‐H) was explored by the aryl elimination pathway using chelate stabilized arene complexes of rare‐earth metals (RE) [RE(dmba)3][RE = Y, Lu; (dmba–) = ortho‐metalated N,N‐dimethylbenzylamine]. The resulting cyclopentadienyl diaryl complexes of the type [(η5‐C5Me4‐SiMe2‐NPtBu3)RE(dmba)2] [RE = Y (5); Lu(6)] were completely characterized by NMR spectroscopy, elemental analysis and X‐ray diffraction analysis. The coordination number of the central atom in each case is nine. Five RE–C bonds to the Cp fragment, two RE–C bonds to the aryl‐carbon atom and two RE–N bonds to the chelating amino function are realized. The phosphazene unit with uncommonly large Si–N–P angles of 173° (5) and 166° (6) do not form a bond in terms of the Constrained‐Geometry ligand concept at least in these complexes. It seems that on the one hand the high coordination number and on the other hand the stable chelate structure of the coordinated amino‐aryl ligand is responsible for this result.

show abstract

The mononuclear and dinuclear dimethoxyethane adducts of lanthanide trichlorides [LnCl3(DME)2]n, n=1 or 2, fundamental starting materials in lanthanide chemistry: preparation and structures

Cited by 44 publications

References 26 publications

Octahedral and Tetrahedral Cobalt(II) Sites in Cobalt Chloride Complexes with Polyethers

Octahedral and Tetrahedral Cobalt(II) Sites in Cobalt Chloride Complexes with Polyethers

Dramatic enhancement of the stability of rare-earth metal complexes with α-methyl substituted N,N-dimethylbenzylamine ligands

Neuartige Cyclopentadienyl‐N‐silylphosphazen‐Komplexe der Seltenerdmetalle Yttrium und Lutetium

Contact Info

Product

Resources

About