Hydroxo Verbindungen, 11. Zinn(II)-Ethylenglykolat, SnC2H4O2, ein polymerer Chelatkomplex mit 2-fach funktionellem Sauerstoff/ Hydroxy Compounds, 11. Tin(II) Ethylen Glycolate, SnC2H4O2, a Polymerie Chelate Complex with Bi-Functional Oxygen

1982 ◽  
Vol 37 (9) ◽  
pp. 1144-1145 ◽  
Author(s):  
Reinhard Nesper ◽  
Hans Georg von Schnering

AbstractTin(II) ethylene glycolate is prepared from freshly precipitated “tin(II)-hydroxide” on heating in ethylene glycol under reflux. The colourless single crystals, slightly distorted cubes, exhibit rhombohedral symmetry (R3̄-C3i2, ah = 1547.7 pm, cn= 871.6 pm, Z = 18). The structure is a 3-dimensional networks of linked tin(II) ethylene glycol chelates.

2014 ◽  
Vol 16 (5) ◽  
pp. 2745-2753 ◽  
Author(s):  
Ai-Yong Zhang ◽  
Lu-Lu Long ◽  
Chang Liu ◽  
Wen-Wei Li ◽  
Han-Qing Yu

To prepare TiO2 single crystals by recycling the waste ethylene glycol electrolyte from the widely-used anodic process for efficient photocatalytic water treatment.


2006 ◽  
Vol 519-521 ◽  
pp. 1569-1578
Author(s):  
Dorte Juul Jensen

By 3 dimensional X-ray diffraction (3DXRD) using high energy X-rays from synchrotron sources it is possible to study in-situ the nucleation and growth during recrystallization. In this paper it is described and discussed how 3DXRD can supplement EBSP measurements of nucleation and growth. Three types of studies are considered: i) orientation relationships between nuclei and parent deformed matrix, ii) recrystallization kinetics of individual bulk grains and iii) filming of growing grains in deformed single crystals.


1996 ◽  
Vol 51 (4) ◽  
pp. 473-476 ◽  
Author(s):  
O. Schrandt ◽  
Hk. Müller-Buschbaum

Abstract Single crystals of K Ca10V7O28 have been prepared by crystallization from flux. The yellow-green crystals show rhombohedral symmetry (trigonal space group C63V-R3c, a = 10.830(1), c = 37.860(1) Å , Z = 6). The differences of the crystal chemistry are discussed with respect to the isotypic compound Ca3(VO4)2. K+ replaces exclusively Ca2+ ions at one deficient point position.


1995 ◽  
Vol 50 (4) ◽  
pp. 585-588 ◽  
Author(s):  
S. Frenzen ◽  
Hk. Müller-Buschbaum

Single crystals of Ba9Ru3.2Mn5.8O27 have been prepared by flux techniques. X-ray four circle diffractometer measurements led to trigonal (rhombohedral) symmetry, space group D53d - R3̄̄̄m , a = 5.7043(5), c = 21.255(4) Å , Z = 1. This phase is isotypic to BaRuO3. The crystal structure and the occupation of the M3O12 triple octahedra by ruthenium and manganese are discussed with respect to other oxides containing M3O12 groups in an ordered and disordered way.


2016 ◽  
Vol 82 ◽  
pp. 196-207 ◽  
Author(s):  
Samira Agbolaghi ◽  
Maryam Nazari ◽  
Saleheh Abbaspoor ◽  
Homa Gheybi ◽  
Farhang Abbasi

2009 ◽  
Vol 24 (1) ◽  
pp. 50-57 ◽  
Author(s):  
Chan Woo Kim ◽  
Sung Eun Kim ◽  
Yong Woo Kim ◽  
Hong Jae Lee ◽  
Hyung Woo Choi ◽  
...  

A novel route to organic-inorganic composites was described based on biomineralization of poly(ethylene glycol) (PEG)-based hydrogels. The 3-dimensional hydrogels were synthesized by radical crosslinking polymerization of poly(ethylene glycol fumarate) (PEGF) in the presence of ethylene glycol methacrylate phosphate (EGMP) as an apatite-nuclating monomer, acrylamide (AAm) as a composition-modulating comonomer, and potassium persulfate (PPS) as a radical initiator. We used the urea-mediated solution precipitation technique for biomineralization of hydrogels. The apatite grown on the surface and interior of the hydrogel was similar to biological apatites in the composition and crystalline structure. Powder x-ray diffraction (XRD) showed that the calcium phosphate crystalline platelets on hydrogels are preferentially aligned along the crystallographic c-axis direction. Inductively-coupled plasma mass spectroscopy (ICP-MS) analysis showed that the Ca/P molar ratio of apatites grown on the hydrogel template was found to be 1.60, which is identical to that of natural bones. In vitro cell experiments showed that the cell adhesion/proliferation on the mineralized hydrogel was more pronounced than on the pure polymer hydrogel.


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