X-ray diffraction and infrared spectroscopy studies on crystal and lamellar structure and cho hydrogen bonding of biodegradable poly(hydroxyalkanoate)

2006 ◽  
Vol 14 (4) ◽  
pp. 408-415 ◽  
Author(s):  
Harumi Sato ◽  
Rumi Murakami ◽  
Jianming Zhang ◽  
Yukihiro Ozaki ◽  
Katsuhito Mori ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Lamellar Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Biodegradable Poly ◽  
Spectroscopy Studies

Infrared Spectroscopy and X-Ray Diffraction Studies of CH…O Hydrogen Bonding and Thermal Behavior of Biodegradable Poly(hydroxyalkanoate)

2005 ◽  
Vol 230 (1) ◽  
pp. 158-166 ◽  
Author(s):  
Harumi Sato ◽  
Rumi Murakami ◽  
Jianming Zhang ◽  
Katsuhito Mori ◽  
Isao Takahashi ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Thermal Behavior ◽  
X Ray Diffraction ◽  
X Ray ◽  
Biodegradable Poly

Molecular Cocrystals of Carboxylic Acids. XXVI Adducts of the Amino-Substituted Benzoic Acids with Nitroaromatic Lewis Bases: the Influence of Associative Polyfunctional Substituents on Self-Assembly of Molecules in Cocrystallization Processes

1997 ◽  
Vol 50 (10) ◽  
pp. 977 ◽  
Author(s):  
Daniel E. Lynch ◽  
Graham Smith ◽  
Karl A. Byriel ◽  
Colin H. L. Kennard
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Self Assembly ◽  
Benzoic Acids ◽  
Aminobenzoic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Lewis Bases ◽  
Aminobenzoic Acids ◽  
Substituted Benzoic Acids

A series of molecular adducts of the isomeric aminobenzoic acids with the nitro-substituted Lewis bases 2-chloro-5-nitropyridine, 5-nitroquinoline and 5-nitroisoquinoline has been prepared and characterized by using infrared spectroscopy and X-ray powder diffraction, and in four cases by single-crystal X-ray diffraction methods. These four compounds are the adducts of 3-aminobenzoic acid with 5-nitroquinoline [(C7H7NO2)(C9H6N2O2)], 4-aminobenzoic acid with 5-nitroquinoline [(C7H7NO2)2(C9H6N2O2)], 2-aminobenzoic acid with 5-nitroisoquinoline [(C7H7NO2)(C9H6N2O2)] and 4-aminobenzoic acid with 5-nitroisoquinoline [(C7H7N2O2)(C9H6N2O2)]. Other compounds described are the (1 : 1) adducts of 4-aminobenzoic acid with 2-chloro-5-nitropyridine, and 2-aminobenzoic acid with 5-nitroquinoline. All adducts involve hydrogen-bonding network associations while in none of the examples is any proton transfer involved.

Synchrotron X-ray Diffraction and Infrared Spectroscopy Studies of C60H18under High Pressure

2010 ◽  
Vol 1 (4) ◽  
pp. 714-719 ◽  
Author(s):  
Honglei Ma ◽  
Xuemei Zhang ◽  
Bingbing Liu ◽  
Quanjun Li ◽  
Qifeng Zeng ◽  
...  
Keyword(s):  
High Pressure ◽  
Infrared Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Spectroscopy Studies

Studies of Rhenium β-diketone Complexes. IV. The Synthesis, Properties, and Crystal Structure of Bis(μ-chlorotricarbonyl(1-phenyl-1-hydroxobut-1-ene-3-one)rhenium(I)), a Compound Containing a Monodentate Neutral β-Ketoenol

1973 ◽  
Vol 51 (7) ◽  
pp. 1116-1122 ◽  
Author(s):  
M. C. Fredette ◽  
C. J. L. Lock
Keyword(s):  
Crystal Structure ◽  
Carbon Monoxide ◽  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Single Crystal ◽  
Title Compound ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
Synthesis Properties

The title compound, [Re(CO)3Cl(C6H5•COH•CH•CO•CH3)]2, is one of a series of compounds obtained by the reaction of chloropentacarbonylrhenium(I) with β-diketones and has been characterized by n.m.r. and infrared spectroscopy and single crystal X-ray diffraction. The crystals are monoclinic with lattice parameters a = 14.77(2), b = 17.98(2), c = 13.48(2) Å, β = 124.34(9)°; C2/c, Z = 4. A total of 1293 independent reflections were measured on a single crystal X-ray diffractometer and the structure was refined by full matrix least squares analysis to a weighted R2 value of 0.0444. The dimeric halves of the molecules are held together by two chlorine atoms symmetrically bridging the rhenium atoms (Re—Cl = 2.511(5) Å The structure is thus very like that of [Re(CO)4Cl]2, except that two neutral β-ketoenol molecules replace two carbon monoxide molecules (one on each rhenium) and are bonded through the ketone group (Re—O = 2.16(1) Å). The arrangement of the keto and enol groups is such that hydrogen bonding can occur between them.

scholarly journals Different Coordination Modes of a Tripod Phosphine in Gold(I) and Silver(I) Complexes

1999 ◽  
Vol 6 (4-5) ◽  
pp. 211-221 ◽  
Author(s):  
P. Sevillano ◽  
M. E. García ◽  
A. Habtemariam ◽  
S. Parsons ◽  
P. J. Sadler
Keyword(s):  
Mass Spectrometry ◽  
Infrared Spectroscopy ◽  
Nmr Spectroscopy ◽  
Coordination Geometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fab Mass Spectrometry ◽  
Intramolecular Distance ◽  
Spectroscopy Studies ◽  
Linear Coordination

The following gold(I) and silver(I) complexes of the tritertiary phosphine 1,1,1- tris(diphenylphosphinomethyl)ethane, tripod , have been synthesised: Au3(tripod)X3 [X = Cl(1), Br(2), I(3)]; [Au3  (tripod)2Cl2  ]Cl (4); Au(tripod)X [X = Br(5), I(6)]; Ag3(tripod)(NO3)3 (7), Ag(tripod)NO3 (8). They were characterized by X-ray diffraction (complexes 2, 3 and 4), P31 NMR spectroscopy, electrospray and FAB mass spectrometry and infrared spectroscopy. Complexes 2 and 3 show a linear coordination geometry for Au(I), with relatively short Au-P bond distances. Complex 3 has a Au•••Au intramolecular distance of 3.326 A° , while complex 2 had a short Au•••Au intermolecular interaction of 3.048 A° . Complexes 4-6 were found by P31 NMR spectroscopy studies to contain a mixture of species in solution, one of which crystallised as [Au3(tripod|)2Cl2]Cl which was shown by X-ray diffraction to contain both tetrahedral and linear Au(I), the first example of a Au(I) complex containing such a mixture of geometries. The reaction of [Au3(tripod)Cl3] (1) with tripod led successfully to the formation of [Au3(tripod)Cl3][Au3(tripod|)2Cl2]+ and [Au3(tripod|)3Cl]2+ . The silver(I) complexes, 7 and 8 appear to contain linear and tetrahedral Ag(I), respectively.

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