Oxalate-Bridged Dinuclear M2Units:  Dimers of Dimers, Cyclotetramers, and Extended Sheets (M = Mo, W, Tc, Ru, and Rh)

2005 ◽  
Vol 44 (16) ◽  
pp. 5571-5579 ◽  
Author(s):  
Bruce E. Bursten ◽  
Malcolm H. Chisholm ◽  
Jason S. D'Acchioli
Keyword(s):  
Extended Sheets

Layer like porous materials with hierarchical structure

2016 ◽  
Vol 45 (12) ◽  
pp. 3400-3438 ◽  
Author(s):  
Wieslaw J. Roth ◽  
Barbara Gil ◽  
Wacław Makowski ◽  
Bartosz Marszalek ◽  
Pavla Eliášová
Keyword(s):  
Porous Materials ◽  
Hierarchical Structure ◽  
Hierarchical Structures ◽  
Extended Sheets

Various hierarchical structures have been produced spontaneously or by modification from layered solids consisting of extended sheets with thickness not greater than a few nanometers.

Retention of (4,4) Connectivity in the Absence of π…π Interactions in a Cadmium tris-Dicyanamide Compound

2006 ◽  
Vol 59 (2) ◽  
pp. 115 ◽  
Author(s):  
Moumita Biswas ◽  
Stuart R. Batten ◽  
Paul Jensen ◽  
Samiran Mitra
Keyword(s):  
Thermogravimetric Analysis ◽  
Ir Spectroscopy ◽  
Powder Diffraction ◽  
Elemental Analysis ◽  
Octahedral Geometry ◽  
X Ray ◽  
Π Interactions ◽  
X Ray Crystallography ◽  
Extended Sheets

An anionic cadmium tris-dicyanamide compound (Et4N)[Cd(N(CN)2)3]·3/4H2O 1 has been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, X-ray powder diffraction, and X-ray crystallography. The anions form extended sheets with retention of (4,4) connectivity in the absence of π···π interactions within the cation layers, and with octahedral geometry about individual CdII ions.

scholarly journals Development of a Methodology for Structural and Mechanical Characterization of Extended Sheets Made from Stainless Steels

2015 ◽  
Vol 18 (suppl 2) ◽  
pp. 76-82 ◽  
Author(s):  
Geraldo Lúcio de Faria ◽  
Leonardo Barbosa Godefroid ◽  
Victor Silva Menezes
Keyword(s):  
Stainless Steels ◽  
Mechanical Characterization ◽  
Extended Sheets

The Effect of Ethylene Glycol and DMSO on Fusion of Isolated Sarcoplasmic Reticulum Membranes

1976 ◽  
Vol 31 (11-12) ◽  
pp. 708-711 ◽  
Author(s):  
Marvin Stromer ◽  
Rudy The ◽  
Wilhelm Hasselbach
Keyword(s):  
Skeletal Muscle ◽  
Sarcoplasmic Reticulum ◽  
Ethylene Glycol ◽  
Membrane Fusion ◽  
Close Contact ◽  
Aluminum Foil ◽  
Vesicle Fusion ◽  
Rabbit Skeletal Muscle ◽  
Treated Sample ◽  
Extended Sheets

Abstract Membrane Fusion, Sarcoplasmic Reticulum, Ethylene Glycol, Dimethylsulfoxide Fragmented sarcoplasmic reticulum (FSR) vesicles from rabbit skeletal muscle were suspended in 5 - 10% ethylene glycol (EG) or in 5, 10, or 25% dimethylsulfoxide (DMSO) and were pelleted onto flat aluminum foil disks. No vesicle fusion occurs with either 5 or 10% EG treatment and 2-2½ hours drying. After 4-5 hours drying, 5% EG-treated vesicles have established more areas of close contact and individual vesicles have begun to flatten when compared with the 10% EG vesicles. Overnight drying results in formation of extended sheets of fused membranes called double bilayers in both the 5 and 10% EG samples. In the 5% EG-treated vesicles, formation of large spaces in the pellet compresses the adjacent bilayer pairs. Extensive vesicle fusion accompanies 4 - 5 hours drying of both 5 and 10% DMSO-treated samples. No fusion was observed in the 25% DMSO-treated sample after 4-5 hours drying and individual vesicles remained round as in the 2-2½ hour samples of all treatments. Overnight drying also causes extended sheets of bilayer pairs to form in the 5% DMSO-treated samples but, with 10 and 25% treated vesicles, destroys the double bilayers and only occasional dense regions of membrane whorls remain. Both EG and DMSO promote more rapid fusion of FSR vesicles than does glycerol but overnight drying after treatment with 10 or 25% DMSO destroys the fused membrane.

scholarly journals Partial charge transfer in the salt co-crystal of L-ascorbic acid and 4,4′-bipyridine

2019 ◽  
Vol 75 (6) ◽  
pp. 728-731 ◽  
Author(s):  
Eric Sylvester ◽  
Mitchell McGovern ◽  
An Young Lee ◽  
Phanxico Nguyen ◽  
Jungeun Park ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Charge Transfer ◽  
Hydrogen Bonds ◽  
Proton Transfer ◽  
Partial Charge ◽  
Asymmetric Unit ◽  
Partial Charge Transfer ◽  
Title 1 ◽  
Space Group ◽  
Extended Sheets

In the title 1:2 co-crystal, C10H9N2 +·(C6H7.75O6·C6H7.25O6)−, L-ascorbic acid (LAA) and 4,4′-bipyridine (BPy) co-crystallize in the chiral space group P21 with two molecules of LAA, and one molecule of bpy in the asymmetric unit. The structure was modeled in two parts due to possible proton transfer from LAA to the corresponding side of the bpy molecule having an occupancy of approximately 0.25 and part 2 with an occupancy of approximately 0.75. In this structure, LAA forms hydrogen bonds with neighboring LAA molecules, forming extended sheets of LAA molecules which are bridged by bpy molecules. A comparison to a related and previously published co-crystal of LAA and 3-bromo-4-pyridone is presented.

Structural studies on porcine brain tubulin in extended sheets

1977 ◽  
Vol 116 (2) ◽  
pp. 301-315 ◽  
Author(s):  
Richard H. Crepeau ◽  
Bruce McEwen ◽  
Gene Dykes ◽  
Stuart J. Edelstein
Keyword(s):  
Structural Studies ◽  
Porcine Brain ◽  
Extended Sheets ◽  
Brain Tubulin

scholarly journals Survey of Fine-Scale Structure in the Far-Infrared Milky Way

1998 ◽  
Vol 179 ◽  
pp. 194-196 ◽  
Author(s):  
W.H. Waller ◽  
F. Varosi ◽  
F. Boulanger ◽  
S.W. Digel
Keyword(s):  
Interstellar Medium ◽  
Milky Way ◽  
Far Infrared ◽  
Scale Structure ◽  
Fine Scale ◽  
Dynamical Processes ◽  
General Morphology ◽  
Extended Sheets

What is the general morphology of the diffuse interstellar medium? Is it mostly uniform or clumpy? Are the clumps mostly in the form of spheroidal clouds, sinuous filaments, extended sheets, or discrete shells? And do the clumps or the voids better define the overall structure? By addressing these morphological questions, one can better constrain the dynamical processes that are most responsible for shaping and energizing the ISM.

scholarly journals N,N-bis(2-quinolinylmethyl)benzylamine

2021 ◽  
Author(s):  
Leigh Andre Hunter ◽  
Shivani Naidoo ◽  
Allen Mambanda
Keyword(s):  
Hydrogen Bonds ◽  
Intermolecular Interactions ◽  
Unit Cell ◽  
Space Group ◽  
Triclinic System ◽  
Extended Sheets

The compound, C27H23N3 (1), crystallizes in the triclinic system of the P-1 space group. The unit cell comprises a dimer of 1, in which the monomers are linked by two complementary hydrogen bonds between N1 and H1-C1 of another molecule. The dimers form chains along the a-axis through intermolecular interactions between the N2 acceptor atoms and C17 donors from molecules in the nearest neighbouring dimer. These interactions form extended sheets of the dimers of 1, along the ab plane. The quinolinylmeth-2-yl groups of 1 lie in almost orthogonal planes and their N1/2(q) donor atoms being away from the apical amino N3 atom.

scholarly journals N,N-bis(2-quinolinylmethyl)benzylamine

Molbank ◽  
10.3390/m1208 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1208
Author(s):  
Leigh A. Hunter ◽  
Shivani Naidoo ◽  
Allen Mambanda
Keyword(s):  
Hydrogen Bonds ◽  
Intermolecular Interactions ◽  
Single Step ◽  
Unit Cell ◽  
Space Group ◽  
Triclinic System ◽  
Three Component Reaction ◽  
Extended Sheets

N,N-bis(2-quinolinylmethyl)benzylamine (1) was synthesized under basic conditions from a pseudo-three-component reaction between benzylamine and two molecules of 2-(quinolinylmethyl)chloride, resulting in the formation of two N–C bonds in a single step. Compound (1) crystallizes in the triclinic system of the P-1 space group. The unit cell comprises a dimer of 1, in which the monomers are linked by two complementary hydrogen bonds between N1 and H′1–C′1 of another molecule. The dimers form chains along the a-axis through intermolecular interactions between the N′2 acceptor atoms and C″17 donors from molecules in the nearest neighboring dimer. These interactions form extended sheets of the dimers of 1, along the ab plane. The quinolinylmeth-2-yl groups of 1 lie in almost orthogonal planes and their N1/2(q) donor atoms are away from the apical amino N3 atom.

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