Synthesis of Trinuclear, Dinuclear and Mononuclear Carbamato‐Zinc Complexes from Tetranuclear Precursors: A Top‐Down Synthetic Approach to New Carbamates

Domide, Dan; Neuhäuser, Christiane; Kaifer, Elisabeth; Wadepohl, Hubert; Himmel, Hans‐Jörg

doi:10.1002/ejic.200801136

Cited by 22 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, pyridine addition gives the dinuclear [ZnMe(O 2 CNR 2 )(py)] 2 with switching of the carbamato coordination from triply ( B/3 ) to doubly bridging ( B/2 ) [ 201 ]. Differently, addition of diamines or guanidines gives the mononuclear complexes [Zn(N)(N)(O 2 CNR 2 ) 2 ], featured by chelating ( C/1 ) or monodentate ( M/1 ) carbamates, according to the electronic properties of the N -ligand [ 298 , 299 ].…”

Section: Synthesis Structure and Reactivity Of Metal Carbamatesmentioning

confidence: 99%

Recent Advances in the Chemistry of Metal Carbamates

et al. 2020

View full text Add to dashboard Cite

Following a related review dating back to 2003, the present review discusses in detail the various synthetic, structural and reactivity aspects of metal species containing one or more carbamato ligands, representing a large family of compounds across all the periodic table. A preliminary overview is provided on the reactivity of carbon dioxide with amines, and emphasis is given to recent findings concerning applications in various fields.

show abstract

Section: Synthesis Structure and Reactivity Of Metal Carbamatesmentioning

confidence: 99%

Recent Advances in the Chemistry of Metal Carbamates

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The guanidine ligands can differ in the bridging unit, in the guanidine moiety and in N‐donor function (Figure ). Guanidine compounds have been studied in various fields in chemistry: general coordination chemistry topics have been investigated by the groups of Himmel and Tamm , . For example, Tamm et al investigated the effects of basic imidazolin‐2‐imine N‐donor ligands on the activity of transition‐metal complexes (Ti, U, Ru, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…in the polymerisation of ε‐caprolactone , , . Guanidine ligands in combination with Zn, Mg or cationic Al have attracted much interest as alkyl transfer reagents and (co‐)catalysts in the Himmel group , . Besides general coordination chemistry, guanidine compounds are common in bioinorganic chemistry, for tyrosinase model systems or as model complexes for the entatic state , .…”

Section: Introductionmentioning

confidence: 99%

Zinc Chloride Complexes with Aliphatic and Aromatic Guanidine Hybrid Ligands and Their Activity in the Ring‐Opening Polymerisation of d,l‐Lactide

et al. 2016

View full text Add to dashboard Cite

The synthesis of the new hybrid guanidine ligands DMEGdmap, DMEGdeae, TMGdmab, DMEGdmab, TMGdeab and DMEGdeab is reported. These ligands were combined with zinc chloride, and the six obtained new complexes were structurally characterised by X-ray crystallography and NMR spectroscopy. Further six new zinc chloride complexes were obtained from the hybrid guanidine ligands TMGdmae, DMEGdmae, TMGdeae, TMGdmap, TMGdeap and TEGdeap. Each of the twelve com- [a]

show abstract

“…This indicates an interaction similar to that in a trigonal-bipyramidal complex, where the Zn–O distance was found to be 2.670 Å . However, in comparison to carboxylates with monodentate coordination where the Zn–O distance is between 3.096 and 4.173 Å, the observed distance for 3c is still short.…”

Section: Results and Discussionmentioning

confidence: 99%

Synthesis and Characterization of a Thiopyridazinylmethane-Based Scorpionate Ligand: Formation of Zinc Complexes and Rearrangement Reaction

et al. 2017

View full text Add to dashboard Cite

The ligand tris(6-tert-butyl-3-thiopyridazinyl)methane ([Tntm]H) was synthesized by the reaction of 6-tertbutyl-3-thiopyridazine with bromoform and reacted with zinc bis(trimethylsilylamide) (Zn(N{SiMe 3 } 2 ) 2 ) to form [Tntm]-Zn(N{SiMe 3 } 2 ) (1). This complex further reacts with protic and acidic substrates, generating the zinc thiolate complex [Tntm]Zn(StBu) (2) and zinc benzoate complex [Tntm]Zn-(O 2 C-Me 2 C 6 H 3 ) (3a). In all compounds [Tntm] was found to have tridentate coordination to the metal center in a κ 3 -C,N,N fashion, as established by single-crystal X-ray diffraction analyses. In solution, rapid dynamic κ 3 /κ 4 equilibrium occurs at room temperature, while 1 H NMR spectroscopy at −30 °C confirms the asymmetric solid-state structure. Furthermore, complex 3a shows a rearrangement reaction in solution where the ligand isomerizes to give a κ 4 -C,N,N,S (3b) and a κ 4 -C,N,S,S isomer (3c), respectively. Density functional theory (DFT) calculations reveal 3b and 3c to be 13.7 and 15.6 kJ/mol more stable in methylene chloride than 3a, respectively. All compounds were fully characterized via 1 H, 13 C, and variable temperature NMR spectroscopy, as well as elemental and single-crystal X-ray diffraction analysis.

show abstract

Synthesis of Trinuclear, Dinuclear and Mononuclear Carbamato‐Zinc Complexes from Tetranuclear Precursors: A Top‐Down Synthetic Approach to New Carbamates

Cited by 22 publications

References 19 publications

Recent Advances in the Chemistry of Metal Carbamates

Recent Advances in the Chemistry of Metal Carbamates

Zinc Chloride Complexes with Aliphatic and Aromatic Guanidine Hybrid Ligands and Their Activity in the Ring‐Opening Polymerisation of d,l‐Lactide

Synthesis and Characterization of a Thiopyridazinylmethane-Based Scorpionate Ligand: Formation of Zinc Complexes and Rearrangement Reaction

Contact Info

Product

Resources

About