Bismuth Species in the Coordination Sphere of Transition Metals: Syntheses, Bonding, Coordination Chemistry, and Reactivity of Molecular Complexes

2021 ◽  
Author(s):  
Jacqueline Ramler ◽  
Crispin Lichtenberg
Keyword(s):  
Coordination Chemistry ◽  
Transition Metal ◽  
Transition Metals ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Coordination Sphere ◽  
Molecular Complexes ◽  
Molecular Transition

This contribution is focused on bismuth species in the coordination sphere of transition metals. In molecular transition metal complexes, three types of Bi–M bonding are considered, namely dative Bi→M interactions...

A novel bis-1,2,4-benzothiadiazine pincer ligand: synthesis, characterization and first row transition metal complexes

2018 ◽  
Vol 47 (44) ◽  
pp. 15725-15736 ◽  
Author(s):  
Konstantina Pringouri ◽  
Muhammad U. Anwar ◽  
Liz Mansour ◽  
Nathan Doupnik ◽  
Yassine Beldjoudi ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Transition Metal ◽  
Transition Metals ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Pincer Ligand ◽  
Ligand Synthesis

The synthesis and coordination chemistry of ligand LH2 to first row transition metals is described in which it acts as a tridentate N,N′,N′′-donor.

Endo- and exohedral chloro-fulleride as η5 ligands: A DFT study on the first-row transition metal complexes

2021 ◽  
Author(s):  
Sebastian Anila ◽  
Cherumuttathu Hariharan Suresh
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Dft Study ◽  
C60 Fullerene ◽  
Ring Fusion ◽  
Coordination Modes

C60 fullerene coordinates to transition metals in η2-fashion through its C-C bond at [6,6] ring fusion whereas other coordination modes η3, η4, η5 and η6 are rarely observed. The coordination...

scholarly journals Frustration across the periodic table: heterolytic cleavage of dihydrogen by metal complexes

2017 ◽  
Vol 375 (2101) ◽  
pp. 20170002 ◽  
Author(s):  
R. Morris Bullock ◽  
Geoffrey M. Chambers
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Molecular Complexes ◽  
Main Group ◽  
Lewis Base ◽  
Metal Compounds ◽  
Metal Catalysis ◽  
Heterolytic Cleavage ◽  
Lewis Pairs

This perspective examines frustrated Lewis pairs (FLPs) in the context of heterolytic cleavage of H 2 by transition metal complexes, with an emphasis on molecular complexes bearing an intramolecular Lewis base. FLPs have traditionally been associated with main group compounds, yet many reactions of transition metal complexes support a broader classification of FLPs that includes certain types of transition metal complexes with reactivity resembling main group-based FLPs. This article surveys transition metal complexes that heterolytically cleave H 2 , which vary in the degree that the Lewis pairs within these systems interact. Many of the examples include complexes bearing a pendant amine functioning as the base with the metal functioning as the hydride acceptor. Consideration of transition metal compounds in the context of FLPs can inspire new innovations and improvements in transition metal catalysis. This article is part of the themed issue ‘Frustrated Lewis pair chemistry’.

scholarly journals Synthesis and Modification of Some New Transition Metal Complexes of Poly (vinyl chloride)

2017 ◽  
Vol 14 (1) ◽  
pp. 202-207
Author(s):  
Baghdad Science Journal
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Metal Complexes ◽  
Ftir Spectroscopy ◽  
Vinyl Chloride ◽  
Transition Metal Complexes ◽  
Visible Spectroscopy ◽  
Poly Vinyl Chloride

Theligand4-[5-(2-hydoxy-phenyl)- [1,3,4- thiadiazole-2- ylimino methyl]-1,5-dimethyl -2-phenyl-1,2-dihydro-pyrazol-3-one [HL1] is prepared and characterized. It is reacted with poly(vinyl chloride) (PVC) in THF to form the PVC-L compounds ,PVC-L interacted with ions of transition metals to form PVC-L-MII complexes .All prepared compounds are characterized by FTIR spectroscopy, u.v-visible spectroscopy, C.H.N.S. analysis and some of them by 1HNMR

scholarly journals X-ray crystallographic insights into post-synthetic metalation products in a metal–organic framework

2017 ◽  
Vol 375 (2084) ◽  
pp. 20160028 ◽  
Author(s):  
Michael T. Huxley ◽  
Campbell J. Coghlan ◽  
Witold M. Bloch ◽  
Alexandre Burgun ◽  
Christian J. Doonan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Coordination Sphere ◽  
Metal Organic Frameworks ◽  
Void Space ◽  
X Ray ◽  
X Ray Crystallography ◽  
Metal Nitrates ◽  
Metal Organic

Post-synthetic modification of metal–organic frameworks (MOFs) facilitates a strategic transformation of potentially inert frameworks into functionalized materials, tailoring them for specific applications. In particular, the post-synthetic incorporation of transition-metal complexes within MOFs, a process known as ‘metalation’, is a particularly promising avenue towards functionalizing MOFs. Herein, we describe the post-synthetic metalation of a microporous MOF with various transition-metal nitrates. The parent framework, 1 , contains free-nitrogen donor chelation sites, which readily coordinate metal complexes in a single-crystal to single-crystal transformation which, remarkably, can be readily monitored by X-ray crystallography. The presence of an open void surrounding the chelation site in 1 prompted us to investigate the effect of the MOF pore environment on included metal complexes, particularly examining whether void space would induce changes in the coordination sphere of chelated complexes reminiscent of those found in the solution state. To test this hypothesis, we systematically metalated 1 with first-row transition-metal nitrates and elucidated the coordination environment of the respective transition-metal complexes using X-ray crystallography. Comparison of the coordination sphere parameters of coordinated transition-metal complexes in 1 against equivalent solid- and solution-state species suggests that the void space in 1 does not markedly influence the coordination sphere of chelated species but we show notably different post-synthetic metalation outcomes when different solvents are used. This article is part of the themed issue ‘Coordination polymers and metal–organic frameworks: materials by design’.

scholarly journals The coordination chemistry of the neutral tris-2-pyridyl silicon ligand [PhSi(6-Me-2-py)3]

2018 ◽  
Vol 47 (20) ◽  
pp. 7036-7043 ◽  
Author(s):  
Alex J. Plajer ◽  
Annie L. Colebatch ◽  
Markus Enders ◽  
Álvaro García-Romero ◽  
Andrew D. Bond ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Pyridyl Ligands

The first transition metal complexes of Si(iv) tris(2-pyridyl) ligands are reported.

scholarly journals Redox mediators accelerate electrochemically-driven solubility cycling of molecular transition metal complexes

2020 ◽  
Vol 11 (36) ◽  
pp. 9836-9851
Author(s):  
Katherine J. Lee ◽  
Kunal M. Lodaya ◽  
Cole T. Gruninger ◽  
Eric S. Rountree ◽  
Jillian L. Dempsey
Keyword(s):  
Transition Metal ◽  
Metal Complex ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Transition Metal Complex ◽  
Redox Mediators ◽  
Insoluble Material ◽  
Molecular Transition ◽  
Novel Strategy

We present an example of electrochemically-driven solubility cycling of a molecular transition metal complex and report a novel strategy for catalytically enhancing the oxidation of an insoluble material using homogeneous redox mediators.

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