Synthesis and Structural Characterization of a Molecular Plutonium(IV) Compound Constructed from Dimeric Building Blocks.

ChemInform ◽  
2007 ◽  
Vol 38 (29) ◽  
Author(s):  
Wolfgang Runde ◽  
Lia F. Brodnax ◽  
George S. Goff ◽  
Shane M. Peper ◽  
Felicia L. Taw ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Building Blocks

Structural characterization of hexameric shell proteins from two types of choline-utilization bacterial microcompartments

2021 ◽  
Vol 77 (9) ◽  
Author(s):  
Jessica M. Ochoa ◽  
Oscar Mijares ◽  
Andrea A. Acosta ◽  
Xavier Escoto ◽  
Nancy Leon-Rivera ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Building Blocks ◽  
Type I ◽  
Type Ii ◽  
Protein Subunits ◽  
Bacterial Microcompartments ◽  
Bacterial Microcompartment ◽  
Glycyl Radical ◽  
Shell Proteins

Bacterial microcompartments are large supramolecular structures comprising an outer proteinaceous shell that encapsulates various enzymes in order to optimize metabolic processes. The outer shells of bacterial microcompartments are made of several thousand protein subunits, generally forming hexameric building blocks based on the canonical bacterial microcompartment (BMC) domain. Among the diverse metabolic types of bacterial microcompartments, the structures of those that use glycyl radical enzymes to metabolize choline have not been adequately characterized. Here, six structures of hexameric shell proteins from type I and type II choline-utilization microcompartments are reported. Sequence and structure analysis reveals electrostatic surface properties that are shared between the four types of shell proteins described here.

Molecular “Texas Longhorn”: An expanded Schiff base oligopyrrolic macrocycle

2021 ◽  
pp. A-G
Author(s):  
Chenxing Guo ◽  
Vincent M. Lynch ◽  
Jonathan L. Sessler
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Structural Characterization ◽  
Building Blocks ◽  
State Structure ◽  
Architectural Form ◽  
Molecular Building Blocks ◽  
Texas Longhorn ◽  
Porphyrin Analogues

We report here the synthesis and structural characterization of a novel expanded Schiff base oligopyrrolic macrocycle TxLH (i.e. compound 2) along with its smaller congener hemi-TxLH (i.e. compound 1). The solid-state structure of TxLH is reminiscent of the shape of a Texas Longhorn[Formula: see text]. It thus defines a new architectural form for porphyrin analogues. The present study thus underscores the potential of using functionalized oligopyrroles as readily accessible molecular building blocks for the construction of structurally non-trivial molecules.

scholarly journals Chances and Limits of the Coordination Chemistry with Bis(benzene-l,2-dithiolato) Ligands

2005 ◽  
Vol 3 (1-2) ◽  
pp. 69-80 ◽  
Author(s):  
Wolfram W. Seidel ◽  
F. Ekkehardt Hahn
Keyword(s):  
Coordination Chemistry ◽  
Structural Characterization ◽  
Building Blocks ◽  
Dinuclear Complexes ◽  
Chelate Complexes ◽  
Helical Structures ◽  
Square Planar ◽  
Supramolecular Coordination ◽  
Cobalt And Nickel

The incorporation of benzene-l,2-dithiolato building blocks into supramolecular coordination assemblies is the main objective of the investigations described here. Special interest is directed towards dinuclear complexes with bis(benzene-l,2-dithiolato) ligands, which might be able to form helical structures. Bis(benzene-l,2-dithiolato) ligands are accessible byortho-functionalization and subsequent linkage of two benzene-l,2-dithiol units. The preparation of well defined complexes of titanium, cobalt and nickel with bis(benzene-l,2-dithiolato) ligands requires strictly thermodynamic equilibration conditions. In that case the size and shape of the ligand backbone determine if dinuclear double-stranded or mononuclear chelate complexes are obtained. The dinuclear double-stranded complexes with Ni(II) and Ni(III) are characterized by a coplanar non-helical arrangement of the square-planar bis(benzene-l,2-dithiolato)nickelate moieties. The complete structural characterization of the series[M(C6H4S2-1,2)3]n-(n = 0, 1, 2) for molybdenum and tungsten indicates an interesting coordination chemistry of dinuclear triple-stranded complexes.

Synthesis and structural characterization of a molecular plutonium(iv) compound constructed from dimeric building blocks

2007 ◽  
pp. 1728 ◽  
Author(s):  
Wolfgang Runde ◽  
Lia F. Brodnax ◽  
George S. Goff ◽  
Shane M. Peper ◽  
Felicia L. Taw ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Building Blocks

scholarly journals Synthesis by self-assembly and structural characterization of a new co-crystal system {[Cu(NO3)2(H2O)2]L1(NO3)2} (L1 = 1,1′-dibenzyl-3,3′-butyl-diimidazolium-2,2′-diylidene) from copper nitrate and a carbene precursor

2008 ◽  
Vol 6 (4) ◽  
pp. 505-508 ◽  
Author(s):  
Jorge Doimeadios
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Structural Characterization ◽  
Self Assembly ◽  
Three Dimensional ◽  
Building Blocks ◽  
Copper Nitrate ◽  
Supramolecular Network ◽  
Crystal System

AbstractHerein, the first example of a co-crystal system formed by an imidazolium nitrate, a carbene precursor, and copper (II) nitrate, {[Cu(NO3)2(H2O)2]L1(NO3)2} (1) (L1 = 1,1′-dibenzyl-3,3′-butyl-diimidazolium-2,2′-diylidene) is reported. These two building blocks are connected in the solid state through hydrogen bonds to generate a three-dimensional supramolecular network.

Synthesis and structural characterization of adaptable shape-persistent building blocks

2000 ◽  
pp. 929-930 ◽  
Author(s):  
Charles Degenhardt III ◽  
David Brian Shortell ◽  
Richard D. Adams ◽  
Ken D. Shimizu
Keyword(s):  
Structural Characterization ◽  
Building Blocks
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