The Synthesis and Structure of Bis- and Tris(amino)-Functionalised Cyclopentadienylyttrium Derivatives

Corradi, Marco M.; McGowan, Margaret A. D.; McGowan, Patrick C.

doi:10.1002/1099-0682(200209)2002:9<2362::aid-ejic2362>3.0.co;2-v

Cited by 10 publications

(7 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have been interested in functionalised Cp systems to stabilise metal centres and as a way of making the organometallic/ coordination compounds water soluble. [14][15][16][17][18][19][20][21][22] N,N-dimethylaminomethyl ferrocene with potassium amide in liquid ammonia resulting in yields of 40-50%. 23 The 1 H (300.1 MHz) and 13 C{ 1 H} (75.4 MHz) NMR spectra of compounds 1-4 were recorded in CDCl 3 at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of mono-amino-functionalised ferrocene, ferrocene salts and ferrocenium salts

2004

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of mono-amino-functionalised ferrocene, ferrocene salts and ferrocenium salts

2004

View full text Add to dashboard Cite

show abstract

“…Any excess solvent was removed under reduced pressure to leave a hygroscopic white powder which was soluble in polar solvents such as methanol and water but insoluble in toluene and diethyl ether. Compound 3 (Scheme 1) was characterised by microanalysis, 1 H and 13 NMR spectroscopy and mass spectrometry. The NMR spectra of compounds 1-3 were very similar to the reported titanium analogues.…”

mentioning

confidence: 99%

“…The solution was filtered and the solvent was then removed in vacuo to leave a pale red solid (1.73 g, 37.3%). 1 H NMR (C 6 D 6 , 250 MHz, 300 K) d 5.6, 5.7 13…”

mentioning

confidence: 99%

“…Petroleum ether (bp 40-60 • C), THF and toluene were pre-dried with Na metal and distilled over Na or Na/benzophenone under di-nitrogen. All solvents were subsequently stored in ampoules under N 2 .1 H and13 C NMR spectra were recorded on Bruker 250 MHz, 300 MHz and 500 MHz spectrometers. Mass spectrometry was performed by the University of Leeds mass spectrometry service.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Functionalised cyclopentadienyl zirconium compounds as potential anticancer drugs

2008

View full text Add to dashboard Cite

show abstract

“…Most of the derivatives containing one monoanionic spectator ligand were accessible through the silylamide route [8] or by metathetical reactions of trialkyl-or trialkoxi-yttrium compounds. [57,87] Examples of the reactivity of the dihalogeno derivatives are few. [26] During the investigations of the reactivity of LYCl 2 (7) For the formation of 18 proposing a mechanism is rather speculative.…”

Section: Synthesis Of the Yttrium Dimer [Ly(n(sime 3 )(Sime 2 )Nh] 2 ...mentioning

confidence: 99%

Synthesis and Reactivity of Rare Earth Metals Complexes with a Nitrogen Donor Ligand. Compounds in Formal Low Oxidation States

Neculai¹

View full text Add to dashboard Cite

Table of Contents Table of Contents 2.4.1.2 Theoretical Calculations on 19 2.4.1.3. Reaction of (LMgBr) 2 ScBr (19) with water. Synthesis of LSc(OB(C 6 F 5 ) 2 ) 2 (20) 2.4.1.4. X-ray Structural Analysis of 20 2.4.1.5. Reaction of (LMgBr) 2 ScBr (19) with (HOCH 2 ) 2 C(CH 3 ) 2 . Synthesis of LMgBr (21) 2.4.1.6. X-ray Structural Analysis of 21 2.4.2. Synthesis of Cluster Lu 2 Mg 4 Cl 10 O 2 •6THF (22) 2.4.2.1. X-ray Structural Analysis of 22 2.4.3. Synthesis of adducts (LLi) 2 SmI 2 (23) and (LLi) 2 YbI 2 (24) 2.4.3.1 X-ray Structural Analyses of 23 and 24 3. SUMMARY AND CONCLUSIONS 4. EXPERIMENTAL SECTION 4.1. General Procedures 4.2. Physical Measurements 4.3. Starting Materials 4.4.1. Synthesis of LScCl 2 (5), LScBr 2 (6), LYBr 2 (7), LYCl 2 (8), and LLuCl 2 (9) 4.4.2. Synthesis of LScI 2 (10) and LYI 2 (11) 4.4.3. Synthesis of LLaCl 2 •LLi(12) and LCeCl 2 •LLi(13) 4.4.4. Synthesis of [(L-H)ScN(SiMe 3 ) 2 ] 2 (14) 4.4.5. Synthesis of LSc(SO 3 CF 3 ) 2 (15) 4.4.6. Synthesis of (Me 3 ClSn-µ-F) 2 LSc (16) and (Me 3 BrSn-µ-F) 2 LSc (17a, 17b) 4.4.7 Synthesis of [LY(N(SiMe 3 )(SiMe 2 )NH] 2 (18) iii Table of Contents 4.4.8. Synthesis of (LMgBr) 2 ScBr (19) 4.4.9. Synthesis of LSc(OB(C 6 F 5 ) 2 ) 2 (20) 4.4.10. Synthesis of LMgBr (21) 4.4.11. Synthesis of Lu 2 Mg 4 Cl 10 O 2 •6THF (22) 4.4.12 Synthesis of (LLi) 2 SmI 2 (23) 4.4.13 Synthesis of (LLi) 2 YbI 2 (24) 4.5. NMR and GC-MS Experiments 5. HANDLING AND DISPOSAL OF SOLVENTS AND RESIDUAL WASTE 6. CRYSTAL DATA AND REFINEMENT DETAILS 7. REFERENCES iv Abbreviations Abbreviations av average br broad C Celsius C. N. coordination number Cp cyclopentadienyl d doublet, days DFT Density Functional Theory DME dimethylethoxide X halogen1. they are considered as hard acids ("a" character). [23] LnX 3 + LLi (LNa, CpTl) → LLnX 2 Equation 1Although complexes with monoanionic ligands LLnX 2 (X = halogen) free of coordinated solvent or alkali metal halogenides have been reported, up to our report from 2001, none have been characterized by X-ray crystallography. [32] Even if most of the developed chemistry contains the rare earth elements in the formal oxidation state +3, the lower oxidation states have also attracted attention due to their unusual properties (i.e. potential new catalysts) and as scientific curiosities. The oxidation state +2 is easily accessible for Eu, Yb, stabilized by the half-filled and filled subshells, and Sm. Their organo derivatives of type RLnX (Ln = Sm, Yb, Eu) are regarded as Grignard analogues and they are used as alkylating agents and in organic second of Cp tt 3 La with K and 18-crown-6 in benzene. Organic solvent adducts of neodymium and dysprosium diiodide were obtained at high temperatures (>200 °C) from the respective metal powder and iodine in sealed glass ampoules followed by treatment of the reaction products with DME or THF. [42] The stable oxidation state +4 is so far well represented only for Cerium compounds. The Ce 4+ compounds are important reagents in preparative and analytical chemistry. [23] Hence, the aims of the present work have ...

show abstract

The Synthesis and Structure of Bis- and Tris(amino)-Functionalised Cyclopentadienylyttrium Derivatives

Cited by 10 publications

References 20 publications

Synthesis of mono-amino-functionalised ferrocene, ferrocene salts and ferrocenium salts

Synthesis of mono-amino-functionalised ferrocene, ferrocene salts and ferrocenium salts

Functionalised cyclopentadienyl zirconium compounds as potential anticancer drugs

Synthesis and Reactivity of Rare Earth Metals Complexes with a Nitrogen Donor Ligand. Compounds in Formal Low Oxidation States

Contact Info

Product

Resources

About