Ligand‐Directed Template Assembly for the Construction of Gigantic Molybdenum Blue Wheels

Abstract

Template-mediated synthesis is apowerful approach to build av ariety of functional materials and complex supramolecular systems.H owever,t he systematic study of howt emplates structurally evolve from basic building blocks, and then affect the templated self-assembly,i sc ritical to understanding and utilizing the underlying mechanism, to work towards designed assembly.H ere we describe the templated self-assembly of as eries of gigantic Mo Blue (MB) clusters 1-4 using l-ornithine as as tructure-directing ligand. We show that by using l-ornithine as as tructure director,w e can form new template&host assemblies.B ased on the structural relationship between encapsulated templates of {Mo 8 }( 1), {Mo 17 }( 2)a nd {Mo 36 }( 4), ap athwayo ft he structural evolution of templates is proposed. This provides insight into how gigantic Mo Blue cluster rings form and could lead to full control over the designed assembly of gigantic Moblue rings.

Gamma-Ray-Induced Formation of Uranyl Peroxide Cage Clusters

“…POMs can reach a nuclearity of up to at least 368, despite containing a small number of unique building blocks. , To better understand their solution properties, mass spectrometry (MS) is used to identify prominent species present, ,− but this provides only limited insights into formation mechanisms. The formation mechanism of POMs has been long sought-after, , and recent efforts have emphasized formation kinetics of POMs and how fragments of these clusters combine to form larger species. , …”

“…The formation mechanism of POMs has been long soughtafter, 2,8 and recent efforts have emphasized formation kinetics of POMs and how fragments of these clusters combine to form larger species. 9,10 Currently lacking is a detailed mechanistic understanding of the formation of actinyl peroxide cage clusters, first introduced in 2005. 11 More than 70 uranyl (UO 2 2+ ) peroxide clusters have been reported to date 12,13 that assemble in aqueous solution over a wide pH range and that can also contain transition metals, phosphates, and organic ligands.…”

Aluminum molecular rings bearing amino-polyalcohol for iodine capture

“…[13][14][15][16] Hence, scientists can explore the macro-scopic performances at the microscopic level and further understand the relationship between these two scales. [17][18][19] Cyclic molecules can form entire or partial inclusion complexes with various guest molecules; [20][21][22] alternatively, they can serve as Lego™ bricks to construct the poly-cluster and extended porous materials. [23][24][25][26][27] Parallel to the families of classical crown ethers, cyclodextrins, and cryptands, there is a class of metal-organic molecular wheel/ring clusters.…”

Guest Transition Metals in Host Inorganic Nanocapsules: Single Sites, Discrete Electron Transfer, and Atomic Scale Structure

“… 8 , 9 The above-mentioned host compounds are organic or metal organic, but an interesting, much smaller, sub-class of host compounds are inorganic capsules. 10 The premier example is the so-called Keplerate polyoxometalate capsules based on molybdenum oxide that are evolving. In the first of these reported compounds, 11 a pentagonal bipyramidal Mo VI O 7 moiety is linked to 5 Mo VI O 6 octahedra forming {Mo/Mo 5 } pentagons.…”