Mechanochemical synthesis in copper(ii) halide/pyridine systems: single crystal X-ray diffraction and IR spectroscopic studies

2011 ◽  
Vol 40 (18) ◽  
pp. 5102 ◽  
Author(s):  
Graham A. Bowmaker ◽  
Corrado Di Nicola ◽  
Claudio Pettinari ◽  
Brian W. Skelton ◽  
Neil Somers ◽  
...  
Keyword(s):  
Single Crystal ◽  
Mechanochemical Synthesis ◽  
Spectroscopic Studies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ir Spectroscopic

(Hydroxymethyl)diphenyl(piperidinoalkyl)silane des Typs (HOCH2)(C6H5)2Si(CH2)nNC5H10(n=2,3) und deren Methoiodide: Synthese, Struktur und antimuscarinische Eigenschaften / (Hydroxymethyl)diphenyl(piperidinoalkyl)silanes of the Type (HOCH2)(C6H5)2Si(CH2)nNC5H10(n = 2,3) and their Methiodides: Synthesis, Structure and Antimuscarinic Properties

1994 ◽  
Vol 49 (7) ◽  
pp. 898-910 ◽  
Author(s):  
Reinhold Tacke ◽  
Martin Kropfgans ◽  
Andrea Tafel ◽  
Frank Wiesenberger ◽  
William S. Sheldrick ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Single Crystal ◽  
Related Compound ◽  
Spectroscopic Studies ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Independent Molecules ◽  
Ir Spectroscopic ◽  
Centrosymmetric Dimers

Abstract Starting from (MeO)3SiCH2Cl (10) and Ph2(H)SiCH2OH (16), respectively, the (hydroxymethyl)diphenyl(piperidinoalkyl)silanes (HOCH2)Ph2Si(CH2)2NC5H10 (6) and (HOCH2)Ph2Si(CH2)3NC5H10 (8) have been synthesized [10→Ph2(MeO)SiCH2Cl (11)→Ph2(CH2=CH)SiCH2Cl (12)→Ph2(CH2=CH)SiCH2OAc (13)→Ph2(CH2=CH)SiCH2OH (14)→Ph2(CH2=CH)SiCH2OSiMe3 (15)→6; 16→Ph2(H)SiCH2OSiMe3 (17)→8; NC5H10 = piperidino]. N-Quaternization of 6 and 8 with MeI gave the corresponding methiodides 7 and 9, respectively. As shown by IR-spectroscopic studies, compounds 6 and 8 form intramolecular O-H···N hydrogen bonds in solution (CCl4). In the crystal, 6 (space group Pna21; two crystallographically independent molecules) also forms intramolecular O-H···N hydrogen bonds whereas 8 (space group P1̅) forms intermolecular O-H···N hydrogen bonds leading to the formation of centrosymmetric dimers (single-crystal X-ray diffraction studies). The (hydroxymethyl) silanes 6-9 and the related silanols (HO)Ph2Si(CH2)2NC5H 10 (sila-pridinol; 1), sila-pridinol methiodide (2), (HO)Ph2Si(CH2)3NC5H10 (sila-difenidol; 3) and sila-difenidol methiodide (4) were investigated for their antimuscarinic properties. In functional pharmacological experiments as well as in radioligand competition studies, all compounds behaved as simple competitive antagonists at muscarinic M1-, M2-, M3- and M4-receptors. In general, the silanols 1-4 displayed higher receptor affinities (up to 100-fold) than the corresponding (hydroxymethyl) silanes 6-9 . In the (hydroxymethyl)silane series, compound 7 was found to be the most potent muscarinic antagonist [pA2/pKi= 8,71/8,6 (M1), 8,23/7,8 (M2), 8,19/7,8 (M3); pKi = 8,2 (M4)]. In the silanol series, the related compound 2 showed the most interesting antimuscarinic properties [pA2/pKi = 10,37/9,6 (M1), 8,97/8,8 (M2), 9,08/8,8 (M3); pKi = 9,4 (M4)].

Structural Study of an Unusual Diels-Alder Adduct

1992 ◽  
Vol 45 (12) ◽  
pp. 2089 ◽  
Author(s):  
EL Ghisalberti ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Diffraction Study ◽  
Structural Study ◽  
Spectroscopic Studies ◽  
Diels Alder ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naturally Occurring ◽  
Chemical Evidence ◽  
Alder Adduct

The structure of the compound obtained on heating the naturally occurring clerodane furanoditerpene (1) had been formulated as (2) on the basis of spectroscopic studies. A single-crystal X-ray diffraction study on the dihydro derivative of (2) has confirmed this and provides support for the stereochemistry previously assigned to (1) on the basis of chemical evidence.

Synthesis, spectroscopic studies, and single crystal X-ray diffraction analysis of a lead(II) based hybrid perovskite: morpholinium trichloroplumbate(II)

2016 ◽  
Vol 39 (5-6) ◽  
Author(s):  
Kuppukkannu Ramalingam ◽  
Corrado Rizzoli ◽  
Thangarasu Rajaraman ◽  
Manikandan Prabu
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Spectroscopic Studies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hybrid Perovskite

AbstractMorpholinium trichloroplumbate(II), [

A Zn(II) complex with a pyridyl- and carboxylate-containing ligand: synthesis and structural characterization

2020 ◽  
Vol 75 (4) ◽  
pp. 379-382
Author(s):  
Tao Hu ◽  
Xiao-Hong Zhu ◽  
Ding-Yun Jiang ◽  
Xiao-Chun Cheng ◽  
Hai-Wei Kuai
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Luminescence Property ◽  
Hydrothermal Reaction ◽  
Isophthalic Acid ◽  
Zinc Atom ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nitrate Hydrate ◽  
Ir Spectroscopic

AbstractThe hydrothermal reaction of Zn(II) nitrate hydrate with 5-(pyridin-4-yl)isophthalic acid (H2L) yields the complex [Zn2(L)2(H2O)2] · 2(H2O) (1), which has been characterized by single crystal X-ray diffraction, IR spectroscopic, elemental, and thermogravimetric analyses. Complex 1 exhibits a 3-nodal (3,6)-connected 2D net structure with (4.62)2(42.610.83)(63)4 topology. Its luminescence property was investigated, but the results show that the coordination to the zinc atom has no significant effect on the emission of the ligand.

Wickenburgite, a double-layer silicate Pb3Al[6][Ca[6]Al[4]Si[4]10O27(H2O)3]·H2O: Crystal chemistry and thermal behaviour

2003 ◽  
Vol 218 (8) ◽  
Author(s):  
K.-F. Hesse ◽  
F. Liebau ◽  
H.-H. Eulert
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Water Content ◽  
Crystal Chemistry ◽  
Diffraction Data ◽  
Thermal Analyses ◽  
Layer Silicate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ir Spectroscopic

AbstractTo clarify discrepancies in the literature with regard to the water content and crystal structure of wickenburgite, chemical and thermal analyses and IR spectroscopic measurements were made and the structure was redetermined with single-crystal X-ray diffraction data. It was found that the idealised composition of the mineral is PbPbWith regard to crystal structure, that described by Lam et al. is found to be essentially correct, except for an additional H

Structural and spectroscopic studies of dipotassium 3,3,3′,3′-tetramethylcystinate trihydrate, K2[C10H18N2O4S2]3H2O

1984 ◽  
Vol 62 (6) ◽  
pp. 1127-1133 ◽  
Author(s):  
Romolo Faggiani ◽  
Helen Elaine Howard-Lock ◽  
Colin James Lyne Lock ◽  
Maria Lurdes Martins ◽  
Philip Stuart Smalley
Keyword(s):  
Hydrogen Bonds ◽  
Single Crystal ◽  
Spectroscopic Studies ◽  
The Other ◽  
Ionic Interactions ◽  
Water Molecules ◽  
Torsional Angle ◽  
X Ray Diffraction ◽  
Standard Methods ◽  
X Ray

The compound dipotassium 3,3,3′,3′-tetramethylcystinate trihydrate, K2[C10H18O4N2S2]3H2O, has been prepared and characterized by single crystal X-ray diffraction. Crystals were monoclinic, P21a = 6.160(1), b = 26.473(8), c = 6.193(1) Å, β = 113.94(1)°, with two formula units in the unit cell. Intensities were measured on a Syntex P21, diffractometer with use of MoKα radiation. The structure was solved by standard methods and refined to R1 = 0.0469, R2 = 0.0472 based on 2303 independent observed reflections. The C—S bonds (1.877(6), 1.891(6) Å) are longer than in many similar compounds although the S—S bond (2.040(2) Å) is not. The C—S—S—C torsional angle (108.7(3)°) is larger than normal in dithiol compounds. Other distances and angles are normal. Two types of potassium coordination are present, one a distorted octahedron, the other a distorted trigonal prism. In addition to the ionic interactions, hydrogen bonds involving the water molecules are important in stabilizing the structure.

High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P21/m phase transition in cummingtonite

1998 ◽  
Vol 83 (3-4) ◽  
pp. 288-299 ◽  
Author(s):  
Hexiong Yang ◽  
Robert M. Hazen ◽  
Charles T. Prewitt ◽  
Larry W. Finger ◽  
Lu Ren ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Single Crystal ◽  
Spectroscopic Studies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Infrared Spectroscopic ◽  
M Phase

Investigation of hydrogen-bond network in bis(glycinium) oxalate using single-crystal neutron diffraction and spectroscopic studies

2007 ◽  
Vol 63 (3) ◽  
pp. 497-504 ◽  
Author(s):  
R. Chitra ◽  
R. R Choudhury
Keyword(s):  
Hydrogen Bond ◽  
Neutron Diffraction ◽  
Single Crystal ◽  
Spectroscopic Studies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Potential Energy Landscape ◽  
Short Hydrogen Bond ◽  
Bond Network ◽  
Ir And Raman

Single-crystal neutron diffraction investigation of bis(glycinium) oxalate was undertaken in order to study its hydrogen-bonding network, particularly the very short hydrogen bond between the glycinum and oxalate ions, indicated by the X-ray diffraction study. The non-existence of any phase transition in these crystals was attributed to the fact that the short hydrogen bond in bis(glycinium) oxalate is asymmetric in nature, with no hydrogen disorder. The potential energy landscape for the above-mentioned H atom was found to have a single minimum closer to the glycinium ion. IR and Raman investigations of the title complex supported the above result.

Water stable fluorescent organotin(IV) compounds: Aggregation induced emission enhancement and recognition of lead ions in an aqueous system

2021 ◽  
Author(s):  
Kulwinder Kaur ◽  
Raghubir Singh ◽  
Varinder Kaur ◽  
Neena Capalash
Keyword(s):  
Single Crystal ◽  
Spectroscopic Studies ◽  
Aqueous System ◽  
Lead Ions ◽  
X Ray Diffraction ◽  
Aggregation Induced Emission ◽  
X Ray ◽  
Emission Enhancement ◽  
Sensing Application

Herein, synthesis, spectroscopic studies, single-crystal X-ray diffraction, aggregation-induced emission enhancement (AIEE) and sensing application of water-stable organotin(IV) compounds (4a-6a and 4b-6b) obtained from 3-hydroxy-4H-chromen-4-one ligands is reported. All the synthesized...

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