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Full-Text Articles in Physical Sciences and Mathematics
New Iodine-Apatites: Synthesis And Crystal Structure, Evgeny Bulanov, Sergey Petrov, Alexander Knyazev
New Iodine-Apatites: Synthesis And Crystal Structure, Evgeny Bulanov, Sergey Petrov, Alexander Knyazev
Turkish Journal of Chemistry
The paper describes methods for the preparation of compounds with an apatite structure containing only iodine atoms in the "halogen" position. The crystal structure of the compounds was refined by the Rietveld method. The resulting apatites have a structure with a space group P63/m and have the following unit cell parameters: Ba4f 1.78(2) Ba6h 2.75(2)(PO4)3I0.04(2) (a = 10.18609(34) Å, c = 7.71113(30) Å, V = 692.889(54) Å3, R = 5.448%), Pb4f 1.82(2)Pb6h 2.75(2)(PO4)3I0.13(2) (a = 9.87882(18) Å, c = 7.43222(16) Å, V = 628.144(26) Å3, R = 8.533 %), Pb4f 1.90(2)Pb6h 2.68(2)(PO4)3I0.16(2) a = 9.87058(48) Å, c = 7.41255(46) Å, …
Synthesis And Spectroscopic Properties Of (N/O) Mono- Anddispirocyclotriphosphazene Derivatives With Benzyl Pendant Arms: Study Ofbiological Activity?, Özlem İşcan, Reşi̇t Cemaloğlu, Nuran Asmafi̇li̇z, Zeynel Kiliç, Leyla Açik, Peli̇n Özbeden, Tuncer Hökelek
Synthesis And Spectroscopic Properties Of (N/O) Mono- Anddispirocyclotriphosphazene Derivatives With Benzyl Pendant Arms: Study Ofbiological Activity?, Özlem İşcan, Reşi̇t Cemaloğlu, Nuran Asmafi̇li̇z, Zeynel Kiliç, Leyla Açik, Peli̇n Özbeden, Tuncer Hökelek
Turkish Journal of Chemistry
The Cl replacement reactions of hexachlorocyclotriphosphazene (trimer; N3 P3 Cl6) with sodium (N-benzyl)- aminopropanoxides (1 and 2) produced monospiro- (3 and 4), cis-, and trans-dispirocyclotriphosphazenes (13-16). The monospiro tetrakis-aminocyclotriphosphazenes (5-12) were obtained by the Cl substitutions of 3 and 4 with different secondary amines. The cis- (13 and 14) and trans-dispirophosphazenes (15 and 16) possessed 2 chiral P centers, and they were able to present meso and racemic forms, respectively. Moreover, the structures of compounds 5 and 14 were designated using X-ray data. The absolute configuration of compound 14 was found as SR in the solid state. Analytical and spectroscopic …
Synthesis, Characterization And Crystal Structures Of Platinum(Ii) Saccharinate Complexes With 1,5-Cyclooctadiene, Ceyda İçsel
Synthesis, Characterization And Crystal Structures Of Platinum(Ii) Saccharinate Complexes With 1,5-Cyclooctadiene, Ceyda İçsel
Turkish Journal of Chemistry
Two new platinum(II) complexes, namely [PtCl(sac)(COD)] (1) and [Pt(sac)$_{2}$(COD)] (2) (sac $=$ saccharinate and COD $=$ 1,5-cyclooctadiene), were synthesized and characterized by elemental analysis, IR, NMR, ESI-MS spectroscopic and thermal analysis (TG/DTA) methods. The platinum(II) complexes were prepared from the reaction of [PtCl$_{2}$(COD)] with Na(sac) • 2H$_{2}$O. The addition of the sac ligand resulted in the replacement of 1 and 2 chlorido ligands in [PtCl$_{2}$(COD)] to yield 1 and 2, respectively. The structures of the complexes were determined by single crystal X-ray diffraction and showed a distorted square planar coordination geometry around platinum(II). COD acted as a $\pi $-donor ligand, …
Synthesis And Antimicrobial Activity Of 1-(Benzo[B]Thiophen-4-Yl)-4-(2-(Oxo, Hydroxyl, And Fluoro)-2-Phenylethyl)Piperazine And 1-(Benzo[D]Isothiazole-3-Yl)-4-(2-(Oxo, Hydroxy, And Fluoro)-2-Phenylethyl)Piperazine Derivatives, Vaibhav Mishra, Tejpal Singh Chundawat
Synthesis And Antimicrobial Activity Of 1-(Benzo[B]Thiophen-4-Yl)-4-(2-(Oxo, Hydroxyl, And Fluoro)-2-Phenylethyl)Piperazine And 1-(Benzo[D]Isothiazole-3-Yl)-4-(2-(Oxo, Hydroxy, And Fluoro)-2-Phenylethyl)Piperazine Derivatives, Vaibhav Mishra, Tejpal Singh Chundawat
Turkish Journal of Chemistry
Twenty-two compounds in a series of 1-(benzo[$b$]thiophen-4-yl)-4-(2-(oxo, hydroxy, and fluoro)-2-phenylethyl) piperazine and 1-(benzo[$d$]isothiazole-3-yl)-4-(2-(oxo, hydroxy, and fluoro)-2-phenylethyl)-piperazine derivatives were synthesized through nucleophilic substitution reaction of phenacyl bromides with hetero arylpiperazine, reduction, and then fluorination. Compound K2 showed potent activity against gram-negative bacterial stain P. aeruginosa with minimum inhibitory concentration (MIC) value of 12.5 μg/mL. This compound showed better inhibitory activity than the standard drug chloramphenicol. K4 against S. aureus, H2 against P. aeruginosa, and F4 against E. coli showed good inhibitory activity with MIC values of 62.5 μg/mL. Compounds K1, K2, K4, K8, F1, and F3 showed good inhibitory activity against …
Syntheses And Photoluminescence Properties Of New Zn(Ii) And Cd(Ii) Coordination Polymers Prepared From 5-Sulfoisophthalate Ligand, Fati̇h Semerci̇
Syntheses And Photoluminescence Properties Of New Zn(Ii) And Cd(Ii) Coordination Polymers Prepared From 5-Sulfoisophthalate Ligand, Fati̇h Semerci̇
Turkish Journal of Chemistry
New coordination polymers, formulated as {[Zn($\mu $-sipH)($\mu $-apim)]$\cdot $3H$_{2}$O} $_{n}$ (1) and {[Cd($\mu $-sip)(H$_{2}$O)$_{2}$ (apimH)]$\cdot $3H$_{2}$O}$_{n}$ (2) were synthesized based on the 1-(3-aminopropyl)imidazole (apim) along with 5-sulfoisophthalate (sip) ligands. The complexes were synthesized under mild hydrothermal conditions. All the complexes were characterized by elemental analysis, FT-IR spectroscopy, and single-crystal X-ray diffraction studies. The X-ray crystallographic studies of 1 and 2 reveal Zn(II) and Cd(II) ions are $\mu $-bridged by dianionic sipH and trianionic sip ligands in bis(monodentate) and bis(bidentate) coordination mode, respectively, to generate 1D polymer chains. In complex 1, the adjacent chains are linked by two apim ligands to …
Synthesis And Photochromism Of New Asymmetrical Diarylethenes With A Variable Heteroaryl Ring And A Quinoline Unit, Hongyan Xu, Renjie Wang, Congbin Fan, Gang Liu, Shouzhi Pu
Synthesis And Photochromism Of New Asymmetrical Diarylethenes With A Variable Heteroaryl Ring And A Quinoline Unit, Hongyan Xu, Renjie Wang, Congbin Fan, Gang Liu, Shouzhi Pu
Turkish Journal of Chemistry
Three new asymmetrical photochromic diarylethenes containing a variable heteroaryl ring and a quinoline unit were synthesized and their structures were determined by single-crystal X-ray diffraction analysis. Their properties, including photochromism, acidichromism, and fluorescence, were investigated systematically. For these diarylethenes, the one with an indole moiety had the largest absorption maximum, cyclization quantum yield, photoconversion ratio, emission peak, and fluorescent modulation efficiency. In addition, these diarylethenes exhibited an evident dual switching behavior induced by the stimulation of acid/base and UV/Vis. Addition of trifluoroacetic acid to solution of the diarylethenes produced protonated derivatives with notable changes in their absorption spectra. These results …
Synthesis And Characterization Of Substituted Benzimidazole Co(Ii), Fe(Ii), And Zn(Ii) Complexes And Structural Characterization Of Dichlorobis{1-[2-(1-Piperidinyl)Ethyl]-1h-Benzimidazole-_Kn^3} Zinc(Ii), Hasan Küçükbay, Ülkü Yilmaz, Mehmet Akkurt, Orhan Büyükgüngör
Synthesis And Characterization Of Substituted Benzimidazole Co(Ii), Fe(Ii), And Zn(Ii) Complexes And Structural Characterization Of Dichlorobis{1-[2-(1-Piperidinyl)Ethyl]-1h-Benzimidazole-_Kn^3} Zinc(Ii), Hasan Küçükbay, Ülkü Yilmaz, Mehmet Akkurt, Orhan Büyükgüngör
Turkish Journal of Chemistry
The Co(II), Fe(II), and Zn(II) complexes of 1-(3-phenyl)propylbenzimidazole (PPBI), 5-nitro-1-(3-phenyl) propylbenzimidazole (PPNBI), 1-[2-(4-morpholinyl)ethyl]benzimidazole (MEBI), 1-[2-(1-piperidinyl)ethyl]benzimidazole (PEBI), and 5-nitro-1-[2-(1-piperidinyl)ethyl]benzimidazole (PENBI) were synthesized and characterized by ^1H NMR, ^{13}C NMR, and elemental analyses. The magnitudes of the magnetic moments for paramagnetic complexes were between 4.07 and 5.11 B.M. Moreover, the crystal structure of dichlorobis{1-[2-(1-piperidinyl)ethyl]-1H-benzimidazole-_KN^3} zinc(II) was determined by single crystal X-ray diffraction.
Synthesis, Structure, And Luminescent Properties Of 2 Novel 5-Chlorhydroxybenzoate-Imidazole Metal-Organic Complexes, Hong Chen, Si Yuan Luo, Xiuling Wu, Yongqian Wang, Bo Hu, Chao Hu, Gang Huang, Qiao Xin Du
Synthesis, Structure, And Luminescent Properties Of 2 Novel 5-Chlorhydroxybenzoate-Imidazole Metal-Organic Complexes, Hong Chen, Si Yuan Luo, Xiuling Wu, Yongqian Wang, Bo Hu, Chao Hu, Gang Huang, Qiao Xin Du
Turkish Journal of Chemistry
Two novel Zn and Cu complexes with 5-chlorhydroxybenzoate and imidazole ligands, C_{41}H_{36}Zn_2N_8O_{13}Cl_4 (1) and C_{26}H_{22}Cl_2Cu_2N_8O_6 (2), were prepared by slow evaporation method. Single crystal X-ray diffraction analysis was used to determine their structures. The purity of the complexes was confirmed by powder X-ray diffraction analysis. In 1 the Zn^{2+} cation is tetracoordinated with 2 nitrogen atoms from 2 imidazoles and 2 oxygen atoms from the 2 carboxyl groups in 5-chlorhydroxybenzoate. In 2 the coordination polyhedrons of Cu^{2+} center can be described as distorted square pyramidal geometry sharing common edges, with an oxygen atom on the top of the pyramid. The …
A Two-Component Protocol For Synthesis Of 3-(2-(Substituted Phenylamino)Thiazol-4-Yl)-2h-Chromen-2-Ones, Aamer Saeed, Mubeen Arif, Madiha Irfan, Michael Bolte
A Two-Component Protocol For Synthesis Of 3-(2-(Substituted Phenylamino)Thiazol-4-Yl)-2h-Chromen-2-Ones, Aamer Saeed, Mubeen Arif, Madiha Irfan, Michael Bolte
Turkish Journal of Chemistry
An efficient 2-component synthesis of a series of 3-(2-(substituted phenylamino)thiazol-4-yl)-2H-chromen-2-ones (3a--j) was achieved by the reaction of 3-(2-thiocyanatoacetyl)-2H-chromen-2-one (1) with a variety of suitably substituted anilines in 1:1 molar ratio in ethanol. The structures of the products were established by elemental analyses, and UV-vis, FTIR, ^1H and ^{13}C NMR, and mass spectroscopy. 3-(2-(4-Methylphenylamino)thiazol-4-yl)-2H-chromen-2-one (3j) was further characterized by single crystal X-ray diffraction study. This compound, C_{19}H_{14}N_2OS, crystallizes in the orthorhombic space group Pna21, with Z = 4, and unit cell parameters a = 13.0785(11), b = 25.746(2), c = 4.7235(3) Å, \alpha = \beta = \gamma = 90°.
Synthesis And Structural X-Ray Analysis Of 1,1'-(Naphthalene-1,8-Diyl)-3,3'-Dibenzoyl-Bisthiourea And Its Use As Anion-Binding Receptor, Fatma Aydin, Nazan Tunoğlu, Doğan Aykaç, Nahi̇de Burcu Arslan, Canan Kazak
Synthesis And Structural X-Ray Analysis Of 1,1'-(Naphthalene-1,8-Diyl)-3,3'-Dibenzoyl-Bisthiourea And Its Use As Anion-Binding Receptor, Fatma Aydin, Nazan Tunoğlu, Doğan Aykaç, Nahi̇de Burcu Arslan, Canan Kazak
Turkish Journal of Chemistry
A novel artificial receptor, 1,1'-(naphthalene-1,8-diyl)-3,3'- dibenzoyl-bisthiourea, based on a 1,8-naphthalene skeleton bearing bisthiourea groups was prepared and characterized by IR and ^1H-NMR, ^{13}C-NMR, and MS spectroscopic techniques. The compound proved to be an efficient and selective naked-eye detector for the fluoride, cyanide, and hydroxide ions in DMSO. The crystal structure of the title compound was examined by using X-ray crystallographic techniques and found to be crystallized in the monoclinic space group P -1 with the unit cell parameters: a = 8.1556(8) Å, b = 12.0127(11) Å, c = 13.2081(11) Å, \alpha = 109.510(7)°, \beta = 95.390(7)°, \gamma = 103.660(7)°, Z …
Synthesis And Crystal Structure Of Pilloin, Hong-Bing Yang, Yan-Chang Wang, Zun-Ting Zhang, Yong Chang
Synthesis And Crystal Structure Of Pilloin, Hong-Bing Yang, Yan-Chang Wang, Zun-Ting Zhang, Yong Chang
Turkish Journal of Chemistry
Pilloin was synthesized by methylation of luteolin and its structure was characterized by element analysis, ^1H-NMR, IR, and single-crystal X-ray diffraction analysis. It crystallizes in the monoclinic crystal system, space group P2_1/n, with a = 7.336(3) Å, b = 14.257(5) Å, c = 13.298(5) Å, \beta = 93.516(5)°. The flavone molecules of pilloin are linked into puckering sheets via R_3^3(14) and R_2^2(9) graph-set ring motifs defined by the C-H...O and O-H...O hydrogen bonds. \pi -\pi stacking interactions lead to the flavone skeletons of columns that are held together through centrosymmetric R_2^2(8) motifs. Hydrogen bonding and aromatic \pi -\pi stacking interactions …
The Mechanism And Crystal Structure Of 2-Methoxy-2-Methyl-4-Phenyl-3,4,4a, 10b-Tetrahydro-2h,5h-Pyrano[3,2-C]Chromen-5-One. Acetal Of Warfarin Acid, Saira Shahzadi, Saqib Ali, Irum Asif, Rizwana Ashraf, Guo-Xin Jin
The Mechanism And Crystal Structure Of 2-Methoxy-2-Methyl-4-Phenyl-3,4,4a, 10b-Tetrahydro-2h,5h-Pyrano[3,2-C]Chromen-5-One. Acetal Of Warfarin Acid, Saira Shahzadi, Saqib Ali, Irum Asif, Rizwana Ashraf, Guo-Xin Jin
Turkish Journal of Chemistry
Acetal of warfarin acid has been synthesized via a hemi acetal intermediate and structurally characterized by X-ray diffraction. The crystal structure shows that the title compound was formed by the hydrolysis of warfarin acid in methanol at pH 3, with space group P2_1/n and unit cell parameters a = 5.859 (17), b =16.745 (5), c = 16.402 (5) Å, \alpha = 90.00; \beta = 94.853 (4), and \gamma = 90.00°.
Synthesis And Crystal Structure Of 1,3-Bis(5-Formylpyrrol-2-Yl)Benzene And Its Conversion To A Macrocyclic Derivative, M. Kasim Şener, Davi̇d Sanches Garcia, Mehmet Akkurt, Sema Öztürk Yildirim, Hoong-Kun Fun, Jonathan L. Sessler
Synthesis And Crystal Structure Of 1,3-Bis(5-Formylpyrrol-2-Yl)Benzene And Its Conversion To A Macrocyclic Derivative, M. Kasim Şener, Davi̇d Sanches Garcia, Mehmet Akkurt, Sema Öztürk Yildirim, Hoong-Kun Fun, Jonathan L. Sessler
Turkish Journal of Chemistry
This report details the synthesis and characterization of a new diformyl pyrrole derivative 2 and its macrocyclic derivative 3. The new compounds were characterized by FT-IR, ^{13}C NMR, and ^1H NMR spectroscopies and via mass spectrometric analysis. The structure of 2 in the solid state was determined using X-ray diffraction methods (monoclinic, P2_1/c, a = 17.3760(7), b = 4.9719(2), c = 15.5374(5) Å, \beta = 105.892(2) °, V = 1291.00(9) Å^3, and Z = 4). The molecular structure is stabilized by N-H...O and C-H...O intermolecular hydrogen bonds. The present bisformylpyrrole derivative 2 provides a new precursor that may be useful …
An Atropisomeric Chiral 2,2'-Bipyridyl-3,3'-Dicarboxylic Acid And Corresponding Platinum(Ii) Complex, Abdurrahman Şengül
An Atropisomeric Chiral 2,2'-Bipyridyl-3,3'-Dicarboxylic Acid And Corresponding Platinum(Ii) Complex, Abdurrahman Şengül
Turkish Journal of Chemistry
2,2'-Bipyridyl-3,3'-dicarboxylic acid (H_2BDC) spontaneously resolves on crystallization from water, giving monohydrated crystals of the space group P2_12_12_1. In any individual crystal, all the atropisomeric-skewed molecules are of one hand; however, on dissolution in water, optical activity is lost. Strong hydrogen bonding leads to a helical structure, via O--H ... N links, and 3 further strong bonds between water and carboxylate groups produce a framework structure. The pK_a values measured for H_2BDC (3.18 \pm 0.04 and 4.59 \pm 0.02 at 20 \pm 1 °C, in dilute aqueous solution) agree with the zwitterionic form. The reaction of H_2BDC with potassium tetrachloroplatinate(II) in …