In situ ligand synthesis and construction of an unprecedented three-dimensional array with silver(i): a new approach to inorganic crystal engineering

1997 ◽  
pp. 1675-1676 ◽  
Author(s):  
Alexander J. Blake ◽  
Neil R. Champness ◽  
Simon S. M. Chung ◽  
Wan-Sheung Li ◽  
Martin Schröder
Keyword(s):  
Crystal Engineering ◽  
Three Dimensional ◽  
New Approach ◽  
Dimensional Array ◽  
Inorganic Crystal ◽  
Ligand Synthesis

Crystal engineering of cadmium coordination polymers decorated with nitro-functionalized thiophene-2,5-dicarboxylate and structurally related bis(imidazole) ligands with varying flexibility

CrystEngComm ◽  
2015 ◽  
Vol 17 (33) ◽  
pp. 6441-6449 ◽  
Author(s):  
Li-Ping Xue ◽  
Zhao-Hao Li ◽  
Lu-Fang Ma ◽  
Li-Ya Wang
Keyword(s):  
Carboxylic Acid ◽  
Coordination Polymers ◽  
Crystal Engineering ◽  
Imidazole Ligand ◽  
Dicarboxylate Ligand ◽  
Ligand Synthesis ◽  
Imidazole Ligands

Five bis(imidazole) ligand modulated cadmium coordination polymers based on a new nitro-functionalized thiophene-2,5-dicarboxylate ligand or 4-nitro-thiophene-2-carboxylic acid involving in situ ligand synthesis.

Crystal Engineering Using Bis- and Tris-phenols. Adducts with 1,4,8,11-Tetraazacyclotetradecane (Cyclam): Isolated Ladders in the Adduct with 4,4'-Thiodiphenol, Tethered Ladders in the Adduct with 4,4'-Sulfonyldiphenol and Two Interwoven Three-Dimensional Networks in the Adduct with 1,1,1-Tris(4-hydroxyphenyl)ethane

1998 ◽  
Vol 54 (2) ◽  
pp. 139-150 ◽  
Author(s):  
G. Ferguson ◽  
C. Glidewell ◽  
R. M. Gregson ◽  
P. R. Meehan
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonds ◽  
Crystal Engineering ◽  
Three Dimensional ◽  
Dimensional Array ◽  
Different Types ◽  
Molecular Components

The structure of 4,4′-thiodiphenol–1,4,8,11-tetraazacyclotetradecane (2/1), (C12H10O2S)2.C10H24N4 (1), monoclinic, P21/c, a = 11.1602 (12), b = 10.8084 (12), c = 14.001 (2) Å, β = 103.127 (10)°, with Z = 2, contains phenolate anions [HOC6H4SC6H4O]− and diprotonated cyclam cations [C10H26N4]2+: these cations have the centrosymmetric trans-III conformation and the two additional protons are contained within the N4 cavity of the macrocycle, held by three-centre hydrogen bonds. The phenolate anions form chains, held together by O—H...O hydrogen bonds, and pairs of these chains are cross-linked into ladders by the [cyclamH2]2+ cations by means of N—H...O hydrogen bonds. The structure of 4,4′-sulfonyldiphenol–1,4,8,11-tetraazacyclotetradecane (2/1), (C12H10O4S)2.C10H24N4 (2), triclinic, P1¯, a = 10.9345 (10), b = 11.0060 (10), c = 14.350 (2) Å, α = 79.532 (10), β = 86.739 (10), γ = 87.471 (10)°, with Z = 2, contains phenolate anions [HOC6H4SO2C6H4O]− and cyclam dications [C10H26N4]2+: the phenolate anions are linked into antiparallel chains, cross-linked by the cyclam cations. There are two distinct types of ladder in the structure running along (0, y, 0) and (1\over2, y, 1\over2), respectively, and these bundled ladders are tied together by C—H...O hydrogen bonds to form a continuous three-dimensional array. In 1,1,1-tris(4-hydroxyphenyl)ethane–1,4,8,11-tetraazacyclotetradecane–methanol (2/1/1), (C20H18O3)2.C10H24N4.CH4O (3), triclinic, P1¯, a = 8.2208 (11), b = 16.245 (2), c = 17.337 (2) Å, α = 81.694 (13), β = 89.656 (14), γ = 86.468 (12)°, with Z = 2, the structure contains centrosymmetric diprotonated cyclam cations of precisely the same type as found in (1), phenolate anions [(HOC6H4)2C(CH3)C6H4O]− and neutral methanol molecules. The molecular components are linked together by nine different types of hydrogen bond, five of O—H...O type and four of N—H...O type, to form chains running in the [001], [010] (two sets), [211] and [211¯] directions. The combination of these chain motifs generates two independent three-dimensional networks which are fully interwoven, but not bonded to one another.

Cadmium Metal-Directed Three-Dimensional Coordination Polymers: In Situ Tetrazole Ligand Synthesis, Structures, and Luminescent Properties

2010 ◽  
Vol 10 (3) ◽  
pp. 1332-1340 ◽  
Author(s):  
Yongcai Qiu ◽  
Yinghua Li ◽  
Guo Peng ◽  
Jinbiao Cai ◽  
Limin Jin ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Luminescent Properties ◽  
Cadmium Metal ◽  
Ligand Synthesis

Inorganic Crystal Engineering through Cation Metathesis:  One-, Two-, and Three-Dimensional Cluster-Based Coordination Polymers

2007 ◽  
Vol 19 (9) ◽  
pp. 2238-2246 ◽  
Author(s):  
Huajun Zhou ◽  
Konstantia C. Strates ◽  
Miguel Á. Muñoz ◽  
Kevin J. Little ◽  
Daniel M. Pajerowski ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Crystal Engineering ◽  
Three Dimensional ◽  
Inorganic Crystal

Crystal Engineering Using Tris-phenols. Cross-Linked, Pairwise-Interwoven Two-Dimensional Nets in the 2:1 Adduct of 1,1,1-Tris(4-hydroxyphenyl)ethane with 1,2-Diaminoethane

1998 ◽  
Vol 54 (3) ◽  
pp. 330-338 ◽  
Author(s):  
G. Ferguson ◽  
C. Glidewell ◽  
R. M. Gregson ◽  
P. R. Meehan
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Crystal Engineering ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Dimensional Array ◽  
Site Occupation

In 1,1,1-tris(4-hydroxyphenyl)ethane–1,2-diaminoethane (2/1), [CH3C(C6H4OH)3]2.H2NCH2CH2NH2 (1), triclinic, P1¯, with Z = 2, a = 10.9430 (12), b = 11.1075 (12), c = 15.249 (2) Å, α = 98.672 (15), β = 96.312 (10), γ = 98.377 (13)°, the tris-phenol units form continuous two-dimensional nets, built from pseudo-hexagonal R^4_4(38) rings, interwoven pairs of which are cross-linked by the 1,2-diaminoethane units. Each tris-phenol unit acts as a triple donor, forming two O—H...O and one O—H...N hydrogen bonds, and as a double acceptor in two O—H...O hydrogen bonds: the diamine unit, in which the CH2 groups are disordered over two sets of sites with site-occupation factors of 0.740 (5) and 0.260 (5), respectively, acts as a double acceptor only and the N—H bonds play no role in the hydrogen bonding. The O...O distances in the O—H...O hydrogen bonds are 2.642 (2), 2.690 (2), 2.810 (2) and 2.835 (2) Å, and the two independent O...N distances are both 2.665 (3) Å. Adjacent bilayers are connected into a continuous three-dimensional array by C—H...O hydrogen bonds, all having a C...O distance of 3.468 (4) Å.

scholarly journals Coupling Time-Resolved in-situ Experiments with Three-Dimensional Imaging - a New Approach to Defect Evolution Studies

2011 ◽  
Vol 17 (S2) ◽  
pp. 440-441
Author(s):  
I Robertson ◽  
G Liu ◽  
J Kacher ◽  
I Robertson
Keyword(s):  
Three Dimensional ◽  
Three Dimensional Imaging ◽  
Time Resolved ◽  
New Approach ◽  
In Situ Experiments ◽  
Defect Evolution ◽  
Coupling Time

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.

scholarly journals Research on functional boards and plastic films based on animal skin and hydroxyapatite

2021 ◽  
Author(s):  
Jiaxing Zhang ◽  
Zhijun Chen ◽  
Zhongzhen Long ◽  
Zhihua Shan
Keyword(s):  
Water Resistance ◽  
Three Dimensional ◽  
Plastic Film ◽  
In Situ Growth ◽  
Collagen Network ◽  
New Approach ◽  
Plastic Films ◽  
Calcium And Phosphorus ◽  
Animal Skin

Abstract Nano-Hydroxyapatite precursors with calcium and phosphorus salts (Ca/P = 1.67) were introduced into a three-dimensional collagen network matrix (3DCM) based on goat skin pretreated with glutaraldehyde for in situ growth, and a functional HAG-3DCM board was obtained. After plasticity compression, a transparent protein plastic film was formed. Response surface methodology based on plasticity pressure conditions was used, and the strength, hardness and water resistance of the HAG-3DCM plastic film was significantly improved. This study demonstrates a new approach for the preparation of animal skin materials with new application value.

Correlated Studies of Cellular Interactions Using TEM, Freeze Etching, and SEM

1974 ◽  
Vol 32 ◽  
pp. 320-321
Author(s):  
J. P. Revel
Keyword(s):  
Developmental Stages ◽  
Three Dimensional ◽  
Cell Movement ◽  
Cellular Interactions ◽  
Serial Sections ◽  
Cell Sheets ◽  
Freeze Etching ◽  
Early Developmental

Movement of individual cells or of cell sheets and complex patterns of folding play a prominent role in the early developmental stages of the embryo. Our understanding of these processes is based on three- dimensional reconstructions laboriously prepared from serial sections, and from autoradiographic and other studies. Many concepts have also evolved from extrapolation of investigations of cell movement carried out in vitro. The scanning electron microscope now allows us to examine some of these events in situ. It is possible to prepare dissections of embryos and even of tissues of adult animals which reveal existing relationships between various structures more readily than used to be possible vithout an SEM.

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