- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Organometallic Complex Synthesis and Catalysis
- Synthesis and characterization of novel inorganic/organometallic compounds
- Crystallography and molecular interactions
- Coordination Chemistry and Organometallics
- Metal complexes synthesis and properties
- Asymmetric Hydrogenation and Catalysis
- Organoboron and organosilicon chemistry
- Ferrocene Chemistry and Applications
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Organometallic Compounds Synthesis and Characterization
- Ammonia Synthesis and Nitrogen Reduction
- Carbon dioxide utilization in catalysis
- Hydrogen Storage and Materials
- Inorganic Chemistry and Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Magnetism in coordination complexes
- Chemical Synthesis and Analysis
- Synthetic Organic Chemistry Methods
- Catalytic Cross-Coupling Reactions
- Advanced NMR Techniques and Applications
- Fluorine in Organic Chemistry
- Hybrid Renewable Energy Systems
- Catalytic C–H Functionalization Methods
University College Dublin
2012-2024
Institute for the Chemistry of OrganoMetallic Compounds
2004-2018
École Polytechnique Fédérale de Lausanne
2006-2016
University of California, Davis
1984-2009
Tianjin University
2008
University Hospital of Lausanne
2006-2007
Universitat Autònoma de Barcelona
2007
Laboratoire de Chimie de Coordination
2006
Centre National de la Recherche Scientifique
2006
University of Alberta
2004-2005
The importance of the energy transition and role green hydrogen in facilitating this cannot be denied. Therefore, it is crucial to pay close attention thoroughly understand storage, which a critical aspect supply chain. In comprehensive review paper, we have undertaken task categorising evaluating various storage technologies across three different scales. These scales include small-scale laboratory-based methods such as metal-based hydrides, physical adsorbents, liquid organic carriers....
Multiple Ge−Ge bonds: The title compound, which has a trans-bent structure (see structure; Ge-Ge-C=128.67(8)°) and short bond (2.2850(5) Å), is the first stable digermanium analogue of an alkyne.
The reaction of Sn(Cl)C(6)H(3)-2,6-Dipp(2) (Dipp = C(6)H(3)-2,6-Pr(i)()(2)) with a stoichiometric amount potassium in benzene affords 2,6-Pr(i)()(2)-H(3)C(6)SnSnC(6)H(3)-2,6-Pr(i)()(2) (1) as dark blue-green crystals. compound 1 is tin analogue an alkyne. It was characterized by (1)H and (13)C NMR UV-vis spectroscopy, cyclic voltammetry, combustion analysis X-ray crystallography. structural data show that has trans-bent, planar C(ipso)SnSnC(ipso) skeleton Sn-Sn bond distance 2.6675(4) A...
The reduction of terphenylgermanium(II) or terphenyltin(II) chlorides with alkali metals was investigated. Treatment Ar'GeCl ArGeCl (Ar' = C(6)H(3)-2,6-Dipp(2), Dipp C(6)H(3)-2,6-Pr(i)(2); Ar C(6)H(3)-2,6-Trip(2), Trip C(6)H(2)-2,4,6-Pr(i)(3)) lithium, sodium, potassium afforded the neutral alkyne analogues Ar'GeGeAr', 1, ArGeGeAr, 2, singly reduced radical species NaArGeGeAr, 3, KAr'GeGeAr', 4, doubly compounds Li(2)Ar'GeGeAr', 5, Na(2)ArGeGeAr, 6, K(2)ArGeGeAr, 7. Similarly, Ar'SnCl ArSnCl...
The synthesis, structure, and properties of several new organogallium(I) compounds are reported. monovalent GaAr* (Ar* = C(6)H(3)-2,6-Trip(2), Trip C(6)H(2)-2,4,6-Pr(i)()(3), 1), GaAr# (Ar# C(6)H(3)-2,6(Bu(t)Dipp)(2), Bu(t)Dipp C(6)H(2)-2,6-Pr(i)(2)-4-Bu(t)(), 4), the dimeric (GaAr')(2) (Ar' C(6)H(3)-2,6-Dipp(2), Dipp C(6)H(3)-2,6-Pr(i)(2), 6) were synthesized by reaction "GaI" with (Et(2)O)LiAr*, (Et(2)O)LiAr# (3), or (LiAr')(2). Compounds 1 4 isolated as green crystals, whereas 6 was...
Reaction of the dimer [(η5-C5Me5)RhCl(μ2-Cl)]2 with 2 or 4 equiv water-soluble phosphine 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane (pta) affords [Rh(η5-C5Me5)(pta)Cl2] and [Rh(η5-C5Me5)(pta)2Cl]Cl, respectively. Both complexes have been characterized in solution by NMR spectroscopy solid state single-crystal X-ray diffraction, latter as chloride BPh4- salts. In addition, rhodium(I) [Rh(η5-C5Me5)(CO)(pta)] [Rh(η5-C5H5)(pta)2] prepared from [Rh(η5-C5Me5)(CO)2] [Rh(η5-C5H5)(PPh3)2],...
Organometallic ruthenium(II) complexes of the general formula [Ru(η6-p-cymene)Cl2(L)] and [Ru(η6-p-cymene)Cl(L)2][BPh4] with modified phenoxazine- anthracene-based multidrug resistance (MDR) modulator ligands (L) have been synthesized, spectroscopically characterized, evaluated in vitro for their cytotoxic MDR reverting properties comparison free ligands. For an ligand, coordination to a arene fragment led significant improvement cytotoxicity as well Pgp inhibition activity. A similar, but...
Reduction of Ar'AlI2 (Ar' = Ar'= C6H3-2,6-Dipp2; Dipp C6H3-2,6-Pri2) with KC8 in diethyl ether most probably affords the first "dialuminene", Ar'AlAlAr'; it was characterized by its reaction toluene which yielded a [2 + 4] cycloaddition product incorporating Ar'AlAlAr' unit.
Ten complexes of general formula [Ru(η6-arene)Cl2(L)], [Ru(η6-arene)Cl(L)2][X], and [Ru(η6-arene)(L)3][X]2 (η6-arene = benzene, p-cymene; L imidazole, benzimidazole, N-methylimidazole, N-butylimidazole, N-vinylimidazole, N-benzoylimidazole; X Cl, BF4, BPh4) have been prepared characterized by spectroscopy. The structures five representative compounds established in the solid state single-crystal X-ray diffraction. All new were assessed same vitro screening assays applied to...
A GaGa bond order considerably less than unity in the "digallene" Ar′GaGaAr′ (Ar′=2,6-Dipp2C6H3, Dipp=2,6-iPr2C6H3; see structure) is indicated by its structure and solution behavior. Supporting information for this article available on WWW under http://www.wiley-vch.de/contents/jc_2002/2002/z19048_s.pdf or from author. Please note: The publisher not responsible content functionality of any supporting supplied authors. Any queries (other missing content) should be directed to corresponding...
The synthesis and structure of a "diindene" with significant metal-metal bonding are described. It has an In-In distance 2.9786(5) A, In-In-C angle 121.23(6) degrees , bond order that is probably less than unity.
The reduction of Ar'GeCl (Ar' = C6H3-2,6-Dipp2; Dipp C6H3-2,6-Pri2) with LiBH(Bus)3 affords the first heavier group 14 element dimetallene hydride Ar'(H)GeGe(H)Ar' which, upon further reaction PMe3, yields base-stabilized isomeric form Ar'(H)2GeGeAr'·PMe3.
Reaction of Ge(Cl)Dipp2nacnac (Dipp2nacnac = {N(C6H3-2,6-i-Pr2)C(Me)}2CH) with B(C6F5)3 in the presence H2O affords salt [Ge(Dipp2nacnac)][HO{B(C6F5)3}2] whose cation [Ge(Dipp2nacnac)]+ is isoelectronic to its neutral gallium analogue Ga(Dipp2nacnac).
Ge-Ge-Mehrfachbindungen: Die hier vorgestellte Verbindung, die in einer trans-abgewinkelten Struktur vorliegt (siehe Bild; Ge-Ge-C=128.67(8)°) und eine kurze Ge-Ge-Bindung aufweist (2.2850(5) Å), ist das erste stabile Digermanium-Analogon eines Alkins.
The synthesis and characterization of three new organothallium(I) compounds are reported. Reaction (Ar'Li)(2) (Ar' = C(6)H(3)-2,6-(C(6)H(3)-2,6-Pr(i)(2))(2)) Ar"Li (Ar" C(6)H(3)-2,6-(C(6)H(3)-2,6-Me(2))(2)) with TlCl in Et(2)O afforded (Ar'Tl)(2) (1) 'Tl)(3) (2). "dithallene" 1 is the heaviest group 13 dimetallene features a planar, trans-bent structure Ar'Tl-Tl 119.74(14) degrees Tl-Tl 3.0936(8) A. Compound 2 first structurally characterized neutral, three-membered ring species formula...
Imidazolium- and pyridinium-based ionic liquids with ether/polyether substituents have been evaluated as solvents for palladium-catalyzed Suzuki C−C coupling reactions. In general, reactions proceed more efficiently in these compared to other liquids, which is believed be due better stabilization of the palladium catalyst, involving weak interactions ether groups. The position number oxygen atoms side chain strongly influence outcome imidazolium-based whereas no observed. Carbene...
A series of compounds the general formula [M(η6-arene)(ptn)Cl]X (M = Ru, Os; arene p-cymene, benzene, toluene, hexamethylbenzene; ptn 3,7-dimethyl-7-phospha-1,3,5-triazabicyclo[3.3.1]nonane; X Cl−, BF4−) have been prepared and characterized spectroscopically. X-ray diffraction was additionally used to characterize four complexes in solid state. The hydrolysis studied, their cytotoxicity evaluated A2780 ovarian cancer cells found be comparable that known RAPTA based on...
Reaction of Ar'MMAr' (M = Ga or In) with N3Ar' ' (Ar' C6H3-2,6-Dipp2, Dipp C6H3-2,6-Pri2, Ar' C6H3-2,6(Xyl-4-But)2) afforded the first monomeric imides heavier group 13 elements two-coordinate metals. Planar, trans-bent structures short M−N bond distances were observed, which are consistent lone pair character at both M and N a order less than formally expected triple one.
Easily lead: The demethylation of [PbMe(2,6-Trip2C6H3)] (Trip=2,4,6-iPr3C6H2) with tris(perfluorophenyl)borane in toluene affords [Pb(2,6-Trip2C6H3)⋅(η2-MeC6H5)][B(Me)(C6F5)3] (see picture), which the lead center is singly bound to 2,6-Trip2C6H3 moiety and also weakly solvated by toluene.
Formation of a vacant coordination site on Ru center permits an unusual binding small molecules such as ethylene, acetylene, and dihydrogen, resulting in the transformation chelating β-diketiminate ligand to β-diimine. These representative species are observed during catalytic hydrogenation styrene.
A series of compounds general formula [Ru(η6-fluoroarene)(pta)Cl2] (fluoroarene = C6H5F, C6H5CF3, and 1,4-C6H4CH3F; pta 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane) have been prepared characterized spectroscopically. Additionally, X-ray diffraction was employed to characterize two the complexes corresponding precursors, i.e., [Ru(acac)2(η4-cod)] Ru(η6-fluoroarene)(η4-cod)] (cod cycloocta-1,5-diene). The solubility, pKa's, stability toward hydrolysis were studied, DFT calculations performed...
The metallostannylene compounds (η5-C5H5)(CO)3MSnC6H3-2,6-Mes2 (Mes = C6H2-2,4,6-Me3; M Cr (1), Mo (2), W (3)), (η5-C5H5)(CO)3MSnC6H3-2,6-Trip2 (Trip C6H2-2,4,6-Pri3; (4), (5), (6)), and (η5-1,3-ButC6H3)MoSnC6H2-2,6-Trip2 (7) were synthesized by the reaction of appropriate aryltin(II) halide with alkali-metal salt cyclopentadienylcarbonylmetalate. compounds, which isolated as purple (1−6) or turquoise crystals, are monomeric V-shaped two-coordinate geometries at tin. tin−transition-metal...
The reaction of PbBr2 with the lithium reagents LiC6H3-2,6-(C6H3-2,6-Pri2)2 (LiArPri2) and Et2O·LiC6H3-2,6-(2,6-Pri-4-ButC6H2)2 (Et2O·LiArPri2But) furnished bromide bridged organolead(II) halides {Pb(μ-Br)ArPri2}2 (1) and{Pb(μ-Br)ArPri2But}2 (2) as orange crystals. Treatment 1 a stoichiometric amount methylmagnesium resulted in "diplumbene" Pri2Ar(Me)PbPb(Me)ArPri2 (3). addition equiv 4-tert-butylphenylmagnesium to afforded feebly associated, Pb−Pb bonded species {Pb(C6H4-4-But)ArPri2}2 (4),...