The development in the field of coordination polymers or metal-organic coordination networks, MOCNs (metal-organic frameworks, MOFs) is assessed in terms of property investigations in the areas of catalysis, chirality, conductivity, luminescence, magnetism, spin-transition (spin-crossover), non-linear optics (NLO) and porosity or zeolitic behavior upon which potential applications could be based.

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Engineering coordination polymers towards applications

The chemistry of heterocyclic carbenes has experienced a rapid development over the last years. In addition to the imidazolin-2-ylidenes, a large number of cyclic diaminocarbenes with different ring sizes have been described. Aside from diaminocarbenes, P-heterocyclic carbenes, and derivatives with only one, or even no heteroatom within the carbene ring are known. New methods for the synthesis of complexes with N-heterocyclic carbene ligands such as the oxidative addition or the metal atom template controlled cyclization of β-functionalized isocyanides have been developed recently. This review summarizes the new developments regarding the synthesis of N-heterocyclic carbenes and their metal complexes.

Heterocyclic Carbenes: Synthesis and Coordination Chemistry

4.2.8. Reductive Coupling 3109 5. Reaction of Aromatic Compounds 3110 5.1. Electrophilic Substitutions 3110 5.2. Radical Substitution 3111 5.3. Oxidative Coupling 3111 5.4. Photochemical Reactions 3111 6. Reaction of Carbonyl Compounds 3111 6.1. Nucleophilic Additions 3111 6.1.1. Allylation 3111 6.1.2. Propargylation 3120 6.1.3. Benzylation 3121 6.1.4. Arylation/Vinylation 3121 6.1.5. Alkynylation 3121 6.1.6. Alkylation 3121 6.1.7. Reformatsky-Type Reaction 3122 6.1.8. Direct Aldol Reaction 3122 6.1.9. Mukaiyama Aldol Reaction 3124 6.1.10. Hydrogen Cyanide Addition 3125 6.2. Pinacol Coupling 3126 6.3. Wittig Reactions 3126 7. Reaction of R,â-Unsaturated Carbonyl Compounds 3127

Organic Reactions in Aqueous Media with a Focus on Carbon−Carbon Bond Formations: A Decade Update

Triazoles and tetrazoles: Prime ligands to generate remarkable coordination materials

Stereoelectronic parameters associated with N-heterocyclic carbene (NHC) ligands: A quest for understanding

Monomeric Tris(η2-pyrazolato)Lanthanoid Complexes with the Bulky 3,5-Di(tert-butyl)pyrazolato Ligand†‡

Die Trichloride von Lanthan, Neodym, Samarium und Terbium reagieren mit Na(C5Me4H) in THF zu homoleptischen Verbindungen des Typs Ln(C5Me4H)3 [Ln = La (1a), Nd (1b), Sm (1c), Tb (1d)]. Dagegen fuhrt die Reaktion von HoCl3, TmCl3 und LuCl3 mit Na(C5Me4H) nur zu den Dicyclopentadienyl-Komplexen (C5Me4H)2LnCl(THF) [Ln = Ho (2e), Tm (2f), Lu (2h)]. Die Metallocene (C5Me4H)2Ln(THF)2 [Ln = Sm (3c), Yb (3g)] sind durch Umsetzung von LnI2 (Ln = Sm, Yb) mit Na(C5Me4H) erhaltlich. Die neuen Verbindungen wurden durch 1H- und 13C-NMR-Spektren, die Tricyclopentadienylderivate 1 a und 1 c durch Rontgenstrukturanalysen charakterisiert.



Organometallic Compounds of the Lanthanides. 93. Tetramethylcyclopentadienyl Complexes of Selected 4f-Elements



The trichlorides of lanthanum, neodymium, samarium, and terbium react with Na(C5Me4H) in THF to yield the homoleptic complexes Ln(C5Me4H)3 [Ln = La (1a), Nd (1b), Sm (1c), Tb (1d)]. On the other hand the reactions of HoCl3, TmCl3, and LuCl3 with Na(C5Me4H) result only with formation of the dicyclopentadienyl complexes (C5Me4H)2LnCl(THF) [Ln = Ho (2e), Tm (2f), Lu (2h)]. The metallocenes (C5Me4H)2Ln(THF)2 [Ln = Sm (3c), Yb (3g)] are obtained by the reactions of LnI2 (Ln = Sm, Yb) with Na(C5Me4H). The 1H- and 13C-NMR spectra as well as the X-ray crystal structure of the triscyclopentadienyl complexes 1 a and 1 c are discussed.

Metallorganische Verbindungen der Lanthanoide. 93 [1]. Tetramethylcyclopentadienyl‐Komplexe ausgewählter 4f‐Elemente

Metallorganische verbindungen der lanthanoide. xcvi: ylidartige olefinkoordination in komplexen dreiwertiger 4f-elemente

Metallorganische verbindungen der lanthanoide: LXXVIII. Bis(pentamethylcyclopentadienyl) [4-(1,2,3,4,5-pentamethylcyclopentadien-1-yl)butoxy] (tetrahydrofuran)lanthanoide

Intramolekular stabilisierte gallium- und indiumorganyle: Synthese und röntgenstrukturanalyse repräsentativer bis- und tris[3-(dialkylamino) propyl]gallium- und -indium-derivate

Holger Hemling

Papers

Monomeric Tris(η2-pyrazolato)Lanthanoid Complexes with the Bulky 3,5-Di(tert-butyl)pyrazolato Ligand†‡

Metallorganische Verbindungen der Lanthanoide. 93 [1]. Tetramethylcyclopentadienyl‐Komplexe ausgewählter 4f‐Elemente

Metallorganische verbindungen der lanthanoide. xcvi: ylidartige olefinkoordination in komplexen dreiwertiger 4f-elemente

Metallorganische verbindungen der lanthanoide: LXXVIII. Bis(pentamethylcyclopentadienyl) [4-(1,2,3,4,5-pentamethylcyclopentadien-1-yl)butoxy] (tetrahydrofuran)lanthanoide

Intramolekular stabilisierte gallium- und indiumorganyle: Synthese und röntgenstrukturanalyse repräsentativer bis- und tris[3-(dialkylamino) propyl]gallium- und -indium-derivate