Solvothermal in Situ Metal/Ligand Reactions:  A New Bridge between Coordination Chemistry and Organic Synthetic Chemistry

2007 ◽  
Vol 40 (2) ◽  
pp. 162-170 ◽  
Author(s):  
Xiao-Ming Chen ◽  
Ming-Liang Tong
Keyword(s):  
Coordination Chemistry ◽  
Synthetic Chemistry ◽  
Metal Ligand

scholarly journals Lanthanide-porphyrin species as Kondo irreversible switches through tip-induced coordination chemistry

Nanoscale ◽  
2021 ◽  
Author(s):  
B. Cirera ◽  
J. M. Gallego ◽  
J. I. Martínez ◽  
R. Miranda ◽  
D. Écija
Keyword(s):  
Coordination Chemistry ◽  
Kondo Resonance ◽  
Atomic Precision ◽  
Sequential Transformation

This work reports the in-situ design of premetallated dysprosium porphyrin complexes (Dy-2H-4FTPP) on Au(111), whose Kondo resonance can be switched off with atomic precision by sequential transformation into partially and fully metallated species.

Retaining Alkyl Nucleophile Regiofidelity in Transition-Metal-Mediated Cross-Couplings to Aryl Electrophiles

Synthesis ◽  
2018 ◽  
Vol 50 (20) ◽  
pp. 3974-3996 ◽  
Author(s):  
Josep Cornella ◽  
Matthew O’Neill
Keyword(s):  
Transition Metal ◽  
Functional Group ◽  
Chemical Space ◽  
Cross Coupling ◽  
Transition Metal Catalysis ◽  
Metal Catalysis ◽  
Substantial Progress ◽  
Tertiary Alkyl ◽  
Metal Ligand

While the advent of transition-metal catalysis has undoubtedly transformed synthetic chemistry, problems persist with the introduction of secondary and tertiary alkyl nucleophiles into C(sp2) aryl electrophiles. Complications arise from the delicate organometallic intermediates typically invoked by such processes, from which competition between the desired reductive elimination event and the deleterious β-H elimination pathways can lead to undesired isomerization of the incoming nucleophile. Several methods have integrated distinct combinations of metal, ligand, nucleophile, and electrophile to provide solutions to this problem. Despite substantial progress, refinements to current protocols will facilitate the realization of complement reactivity and improved functional group tolerance. These issues have become more pronounced in the context of green chemistry and sustainable catalysis, as well as by the current necessity to develop robust, reliable cross-couplings beyond less explored C(sp2)–C(sp2) constructs. Indeed, the methods discussed herein and the elaborations thereof enable an ‘unlocking’ of accessible topologically enriched chemical space, which is envisioned to influence various domains of application.1 Introduction2 Mechanistic Considerations3 Magnesium Nucleophiles4 Zinc Nucleophiles5 Boron Nucleophiles6 Other Nucleophiles7 Tertiary Nucleophiles8 Reductive Cross-Coupling with in situ Organometallic Formation9 Conclusion

scholarly journals In-situ-grown silver–polymer framework with coordination complexes for functional artificial tissues

2021 ◽  
Author(s):  
Swee Ching Tan ◽  
Songlin Zhang ◽  
Yibing Deng ◽  
Alberto Libanori ◽  
Yihao Zhou ◽  
...  
Keyword(s):  
Coordination Complexes ◽  
Homogeneous Material ◽  
Multimodal Sensing ◽  
Dynamic Materials ◽  
Neuromuscular Systems ◽  
Polymer Framework ◽  
External Stimuli ◽  
Poor Adhesion ◽  
Metal Ligand

Abstract Sensorized actuators are critical to imitate proprio-/exteroception properties of biological neuromuscular systems. Existing add-on approaches, which physically blend heterogeneous sensor/actuator components, fall short of yielding satisfactory solutions, considering their suboptimal interfaces, poor adhesion, and electronic/mechanical property mismatch. Here, we report a single homogeneous material comprising seamless sensing-actuation unification properties at nano-/molecule levels, in which built-in sensing functions originate from the actuator architecture itself. In-situ-grown silver nanoparticles and metal-ligand complexes cooperatively create a silver–polymer framework (SPF) that is stretchable (1200%), conductive (0.076 S/m), and strong (0.76 MPa in-strength). SPF displays concomitant multimodal sensing (mechanical and thermal cues) and sensorized actuation capabilities, which include proprio-deformation and external stimuli perceptions (simultaneous with load-lifting ability up to 3700× of own weight). In view of its human somatosensitive muscular systems imitative functionality, the reported SPFs bode well for use with next generation functional tissues including artificial skins, human-machine interfaces, self-sensing robots, and otherwise dynamic materials.

A general approach for hierarchically porous metal/N/C nanosphere electrocatalysts: nano-confined pyrolysis of in situ-formed amorphous metal–ligand complexes

2020 ◽  
Vol 8 (40) ◽  
pp. 21026-21035
Author(s):  
Luming Wu ◽  
Baoxia Ni ◽  
Rui Chen ◽  
Pingchuan Sun ◽  
Tiehong Chen
Keyword(s):  
Porous Metal ◽  
Amorphous Metal ◽  
Ligand Complex ◽  
Hierarchically Porous ◽  
Nitrogen Doped ◽  
Metal Ligand

A general approach was developed for constructing highly nitrogen-doped hierarchically porous metal/N/C nanospheres by nano-confined pyrolysis of in situ-formed amorphous metal–ligand complex.

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