journal
MENU ▼
Read by QxMD icon Read
search

Inorganic Chemistry

journal
https://www.readbyqxmd.com/read/28727427/high-throughput-synthesis-and-structure-of-zeolite-zsm-43-with-two-directional-8-ring-channels
#1
Tom Willhammar, Jie Su, Yifeng Yun, Xiaodong Zou, Mobae Afeworki, Simon C Weston, Hilda B Vroman, William W Lonergan, Karl G Strohmaier
The aluminosilicate zeolite ZSM-43 (where ZSM = Zeolite Socony Mobil) was first synthesized more than 3 decades ago, but its chemical structure remained unsolved because of its poor crystallinity and small crystal size. Here we present optimization of the ZSM-43 synthesis using a high-throughput approach and subsequent structure determination by the combination of electron crystallographic methods and powder X-ray diffraction. The synthesis required the use of a combination of both inorganic (Cs(+) and K(+)) and organic (choline) structure-directing agents...
July 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28726395/synthesis-and-mechanism-of-formation-of-hydride-sulfide-complexes-of-iron
#2
Nicholas A Arnet, Sean F McWilliams, Daniel E DeRosha, Brandon Q Mercado, Patrick L Holland
Iron-sulfide complexes with hydride ligands provide an experimental precedent for spectroscopically detected hydride species on the iron-sulfur MoFe7S9C cofactor of nitrogenase. In this contribution, we expand upon our recent synthesis of the first iron sulfide hydride complex from an iron hydride and a sodium thiolate ( Arnet, N. A.; Dugan, T. R.; Menges, F. S.; Mercado, B. Q.; Brennessel, W. W.; Bill, E.; Johnson, M. A.; Holland, P. L., J. Am. Chem. Soc. 2015 , 137 , 13220 - 13223 ). First, we describe the isolation of an analogous iron sulfide hydride with a smaller diketiminate supporting ligand, which benefits from easier preparation of the hydride precursor and easier isolation of the product...
July 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28726387/aryl-substituted-ruthenium-ii-complexes-a-strategy-for-enhanced-photocleavage-and-efficient-dna-binding
#3
Felipe Diógenes Abreu, Tercio de F Paulo, Marcelo H Gehlen, Rômulo A Ando, Luiz G F Lopes, Ana Cláudia S Gondim, Mayron A Vasconcelos, Edson H Teixeira, Eduardo Henrique Silva Sousa, Idalina Maria Moreira de Carvalho
Ruthenium polypyridine complexes have shown promise as agents for photodynamic therapy (PDT) and tools for molecular biology (chromophore-assisted light inactivation). To accomplish these tasks, it is important to have at least target selectivity and great reactive oxygen species (ROS) photogeneration: two properties that are not easily found in the same molecule. To prepare such new agents, we synthesized two new ruthenium complexes that combine an efficient DNA binding moiety (dppz ligand) together with naphthyl-modified (1) and anthracenyl-modified (2) bipyridine as a strong ROS generator bound to a ruthenium complex...
July 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28723082/mixed-valency-in-a-3d-semiconducting-iron-fluoranilate-coordination-polymer
#4
Ryuichi Murase, Brendan F Abrahams, Deanna M D'Alessandro, Casey G Davies, Timothy A Hudson, Guy N L Jameson, Boujemaa Moubaraki, Keith S Murray, Richard Robson, Ashley L Sutton
A pair of coordination polymers of composition (NBu4)2[M2(fan)3] (fan = fluoranilate; M = Fe and Zn) were synthesized and structurally characterized. In each case the compound consists of a pair of interpenetrating three-dimensional, (10,3)-a networks in which metal centers are linked by chelating/bridging fluoranilate ligands. Tetrabutylammonium cations are located in the spaces between the two networks. Despite the structural similarity, significant differences exist between (NBu4)2[Fe2(fan)3] and (NBu4)2[Zn2(fan)3] with respect to the oxidation states of the metal centers and ligands...
July 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28723079/exploring-the-role-of-carbonate-in-the-formation-of-an-organomanganese-tetramer
#5
Karthika J Kadassery, Suman Kr Dey, Alan E Friedman, David C Lacy
The formation of metal-oxygen clusters is an important chemical transformation in biology and catalysis. For example, the biosynthesis of the oxygen-evolving complex in the enzyme photosystem II is a complicated stepwise process that assembles a catalytically active cluster. Herein we describe the role that carbonato ligands have in the formation of the known tetrameric complex [Mn(CO)3(μ3-OH)]4 (1). Complex 1 is synthesized in one step via the treatment of Mn2(CO)10 with excess Me3NO·2H2O. Alternatively, when anhydrous Me3NO is used, an OH-free synthetic intermediate (2) with carbonato ligands is produced...
July 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28723078/covalency-competition-in-the-quadruple-perovskite-cdcu3fe4o12
#6
Ikuya Yamada, Akihiko Takamatsu, Naoaki Hayashi, Hidekazu Ikeno
Cadmium ions (Cd(2+)) are similar to calcium ions (Ca(2+)) in size, whereas the Cd(2+) ions tend to form covalent bonds with the neighboring anions because of the high electronegativity. The covalent Cd-O bonds affect other metal-oxygen bonds, inducing drastic changes in crystal structures and electronic states. Herein, we demonstrate high-pressure synthesis, crystal structure, and properties of a new quadruple perovskite CdCu3Fe4O12. This compound exhibits an electronic phase transition accompanying a charge disproportionation of Fe ions without charge ordering below ∼200 K, unlike charge-disproportionation transition with rock-salt-type charge ordering for CaCu3Fe4O12...
July 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28722450/two-new-sandwich-type-manganese-mn5-substituted-polyoxotungstates-syntheses-crystal-structures-electrochemistry-and-magnetic-properties
#7
Rakesh Gupta, Imran Khan, Firasat Hussain, A Martin Bossoh, Israël M Mbomekallé, Pedro de Oliveira, Masahiro Sadakane, Chisato Kato, Katsuya Ichihashi, Katsuya Inoue, Sadafumi Nishihara
Herein we report two pentanuclear Mn(II)-substituted sandwich-type polyoxotungstate complexes, [{Mn(bpy)}2Na(H2O)2(MnCl)2{Mn(H2O)}(AsW9O33)2](9-) and [{Mn(bpy)}2Na(H2O)2(MnCl){Mn(H2O)}2(SbW9O33)2](8-) (bpy = 2,2'-bipyridine), whose structures have been obtained by single-crystal X-ray diffraction (SCXRD), complemented by results obtained from elemental analysis, electrospray ionization mass spectrometry, Fourier transform infrared spectroscopy, and thermogravimetric analysis. They consist of two [B-α-XW9O33](9-) subunits sandwiching a cyclic assembly of the hexagonal [{Mn(bpy)}2Na(H2O)2(MnCl)2{Mn(H2O)}](9+) and [{Mn(bpy)}2Na(H2O)2(MnCl){Mn(H2O)}2](10+) moieties, respectively, and represent the first pentanuclear Mn(II)-substituted sandwich-type polyoxometalates (POMs)...
July 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28722401/novel-xanthate-complexes-for-the-size-controlled-synthesis-of-copper-sulfide-nanorods
#8
Mundher Al-Shakban, Peter D Matthews, Geradius Deogratias, Paul D McNaughter, James Raftery, Inigo Vitorica-Yrezabal, Egid B Mubofu, Paul O'Brien
We present a simple, easily scalable route to monodisperse copper sulfide nanocrystals by the hot injection of a series of novel copper(I) xanthate single-source precursors [(PPh3)2Cu(S2COR)] (R = isobutyl, 2-methoxyethyl, 2-ethoxyethyl, 1-methoxy-2-propyl, 3-methoxy-1-butyl, and 3-methoxy-3-methyl-1-butyl), whose crystal structures are also reported. We show that the width of the obtained rods is dependent on the length of the xanthate chain, which we rationalize through a computational study, where we show that there is a relationship between the ground-state energy of the precursor and the copper sulfide rod width...
July 19, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28719190/chiral-mo8o26-4-polyoxoanion-induced-three-dimensional-architectures-with-homochiral-eight-fold-interpenetrated-metal-organic-frameworks
#9
Mengjie Zhou, Dawei Yan, Yayu Dong, Xingxiang He, Yan Xu
A pair of novel chiral compounds based on homochiral 8-fold interpenetrated metal-organic frameworks (MOFs) and chiral polyoxometalates (POMs), formulated as d-[Cu(4,4'-bipy)1.5]4[Mo8O26] (d-1) and l-[Cu(4,4'-bipy)1.5]4[Mo8O26] (l-1) (4,4'-bipy = 4,4'-bipyridine), have been successfully synthesized and characterized by single crystal X-ray diffraction, infrared, thermogravimetric analysis, elemental analysis, and solid circular dichroism spectra. Structural analysis indicates that two compounds are enantiomers...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28718656/intermediate-valence-ytterbium-compound-yb4ga24pt9-synthesis-crystal-structure-and-physical-properties
#10
Olga Sichevych, Yurii Prots, Yuki Utsumi, Lev Akselrud, Marcus Schmidt, Ulrich Burkhardt, Mauro Coduri, Walter Schnelle, Matej Bobnar, Yu-Ting Wang, Yu-Han Wu, Ku-Ding Tsuei, Liu Hao Tjeng, Yuri Grin
The title compound was synthesized by a reaction of the elemental educts in a corundum crucible at 1200 °C under an Ar atmosphere. The excess of Ga used in the initial mixture served as a flux for the subsequent crystal growth at 600 °C. The crystal structure of Yb4Ga24Pt9 was determined from single-crystal X-ray diffraction data: new prototype of crystal structure, space group C2/m, Pearson symbol mS74, a = 7.4809(1) Å, b = 12.9546(2) Å, c = 13.2479(2) Å, β = 100.879(1)°, V = 1260.82(6) Å(3), RF = 0...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28718645/fourfold-interpenetrated-mof-ni-pybz-2-as-coating-material-in-gas-chromatographic-capillary-column-for-separation
#11
Yan Zhang, Li Wang, Ru-Xin Yao, Xian-Ming Zhang
A fourfold interpenetrated diamond-like topological metal-organic framework (MOF), Ni(pybz)2 [pybz = 4-(4-pyridyl)benzoate] was successfully synthesized and fully characterized. This MOF can serve as coating material in gas chromatographic capillary column for the separation of some low boiling point essential oils. The prepared columns have good recognition ability and excellent selectivity toward a series of organic compounds, including alcohols, aldehydes, ketones, carboxylic acid, ethers, ester, and amines...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28718635/undervalued-n3-coordination-revealed-in-the-cisplatin-complex-with-2-deoxyadenosine-5-monophosphate-by-a-combined-irmpd-and-theoretical-study
#12
Barbara Chiavarino, Maria Elisa Crestoni, Simonetta Fornarini, Debora Scuderi, Jean-Yves Salpin
The complex obtained by the reaction of cisplatin and 2'-deoxyadenosine-5'-monophosphate (5'-dAMP) in water has been isolated and detected by electrospray ionization mass spectrometry. The so-formed cis-[PtCl(NH3)2(5'-dAMP)](+) complex has been studied in detail by infrared multiple photon dissociation (IRMPD) spectroscopy in two spectral ranges, namely, 700-1900 and 2800-3800 cm(-1), backed by quantum-chemical calculations at the B3LYP/LACV3P/6-311G** level of theory. In agreement with the computational results, the vibrational spectroscopic characterization of cis-[PtCl(NH3)2(5'-dAMP)](+) shows that the sampled ionic population comprises two major isomers, differentiated in the X-H stretching region by their distinct fragmentation patterns...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28718634/porous-uranyl-borophosphates-with-unique-three-dimensional-open-framework-structures
#13
Yucheng Hao, Gabriel L Murphy, Dirk Bosbach, Giuseppe Modolo, Thomas E Albrecht-Schmitt, Evgeny V Alekseev
Two novel alkali-metal uranyl borophosphates have been prepared and characterized for the first time, namely, K5(UO2)2[B2P3O12(OH)]2(OH)(H2O)2 and K2(UO2)12[B(H2PO4)4](PO4)8(OH)(H2O)6 denoted as KUPB1 and KUPB2, respectively. KUPB1 was obtained hydrothermally at 220 °C and crystallizes in a monoclinic structure in the chiral space group P21. The unit cell parameters of KUPB1 are a = 6.7623(2) Å, b = 19.5584(7) Å, c = 11.0110(4) Å, α = γ = 90°, β = 95.579(3)°, and V = 1449.42(8) Å(3). It features a unique three-dimensional (3D) open-framework structure, composed of two corner-sharing linked one-dimensional (1D) anionic borophosphates (BP), [B2P3O13](5-), along the a axis and uranyl phosphate (UP), [(UO2)(PO4)3](7-), chains along the c axis, further bridged by PO4 tetrahedra...
July 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28715225/structure-ionic-conductivity-and-dielectric-properties-of-li-rich-garnet-type-li5-2xla3ta2-xsmxo12-0-%C3%A2-x-%C3%A2-0-55-and-their-chemical-stability
#14
Dalia M Abdel-Basset, Suresh Mulmi, Mohammed S El-Bana, Suzan S Fouad, Venkataraman Thangadurai
Lithium garnet oxides are considered as very promising solid electrolyte candidates for all-solid-state lithium ion batteries (SSLiBs). In this work, we present a cubic garnet-type Li5+2xLa3Ta2-xSmxO12 (0 ≤ x ≤ 0.55) system as a potential electrolyte for SSLiBs. Powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM) were employed to investigate the structural stability of Li5+2xLa3Ta2-xSmxO12. The results from PXRD and SEM suggested structural and morphological transformation as a function of dopant concentration...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28715210/intercalation-of-primary-alcohols-into-layered-titanoniobates
#15
Chris I Thomas, Maarit Karppinen
Lamellar oxides form an important class of functional materials and are often susceptible to topotactic substitution of the ions between the layers. This opens up the structure to direct reactions with alkylammonium ions often substituting for group 1 ions forcing an increase in layer separation. Proton exchange with group 1 ions is also possible in mineral acids with the resulting protonated materials typically being acidic. These solid acids can further react with bases such as alkyl amines again causing an increase in interlayer separation...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28715176/a-fast-and-scalable-approach-for-synthesis-of-hierarchical-porous-zeolitic-imidazolate-frameworks-and-one-pot-encapsulation-of-target-molecules
#16
Hani Nasser Abdelhamid, Zhehao Huang, Ahmed M El-Zohry, Haoquan Zheng, Xiaodong Zou
A trimethylamine (TEA)-assisted synthesis approach that combines the preparation of hierarchical porous zeolitic imidazolate framework ZIF-8 nanoparticles and one-pot encapsulation of target molecules is presented. Two dye molecules, rhodamine B (RhB) and methylene blue (MB), and one protein (bovine serum albumin, BSA) were tested as the target molecules. The addition of TEA into the solution of zinc nitrate promoted the formation of ZnO nanocrystals, which rapidly transformed to ZIF-8 nanoparticles after the addition of the linker 2-methylimidazole (Hmim)...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28715173/influence-of-18-crown-6-ether-coordination-on-the-catalytic-activity-of-potassium-and-calcium-diarylphosphinites-in-hydrophosphorylation-reactions
#17
Stephan M Härling, Sven Krieck, Helmar Görls, Matthias Westerhausen
The addition of 18-crown-6 ether (1,4,7,10,13,16-hexaoxacyclooctadecane) to tetranuclear [(thf)K(OPAryl2)]4 and [(thf)4Ca(OPAryl2)2] yields the corresponding mononuclear complexes [(18C6)K(OPAryl2)] [Aryl = Ph (1a), Mes (1b)] and [(18C6)Ca(OPAryl2)2] [Aryl = Ph (2a), Mes (2b)]. The metathesis reaction of [(thf)K(OPAryl2)]4 with CaI2 yields the calciate [K2Ca(thf)x{OPMes2}4]. The addition of dimesitylphosphane oxide and crystallization from a hexane solution gives [K2Ca{OPMes2}4{Mes2P(O)H}] (3). The complexes [(thf)K(OPMes2)]4, [(thf)4Ca(OPMes2)2], 1b, 2b, and the calciate 3 are tested as catalysts in the hydrophosphorylation of isopropylisocyanate with dimesitylphosphane oxide, quantitatively yielding N-isopropyl(dimesitylphosphoryl)formamide...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28714697/molybdenum-oxide-nitrides-of-the-mo2-o-n-%C3%A2-5-type-on-the-way-to-mo2o5
#18
Dominik Weber, Manop Huber, Tatiana E Gorelik, Artem M Abakumov, Nils Becker, Oliver Niehaus, Christian Schwickert, Sean P Culver, Hans Boysen, Anatoliy Senyshyn, Rainer Pöttgen, Richard Dronskowski, Thorsten Ressler, Ute Kolb, Martin Lerch
Blue-colored molybdenum oxide nitrides of the Mo2(O,N,□)5 type were synthesized by direct nitridation of commercially available molybdenum trioxide with a mixture of gaseous ammonia and oxygen. Chemical composition, crystal structure, and stability of the obtained and hitherto unknown compounds are studied extensively. The average oxidation state of +5 for molybdenum is proven by Mo K near-edge X-ray absorption spectroscopy; the magnetic behavior is in agreement with compounds exhibiting Mo(V)O6 units. The new materials are stable up to ∼773 K in an inert gas atmosphere...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28714679/spectroscopic-study-of-the-reversible-chemical-reduction-and-reoxidation-of-substitutional-cr-ions-in-sr2tio4
#19
Keith A Lehuta, Anubhab Haldar, Dongming Zhou, Kevin R Kittilstved
The solid-state synthesis and controllable speciation of Cr dopants in the layered perovskite Sr2TiO4 is reported. We employed a chemical reduction procedure with NaBH4 at relatively mild temperatures (<450 °C) to impart sensitive control over the relative concentration of Cr(3+) dopants, the charge-state of oxygen-vacancy defects, and presence of Ti(3+) defects in highly reduced Cr-doped Sr2TiO4. The electron paramagnetic resonance (EPR) spectra of the reduced powder samples reveal a 12-fold increase in the Cr(3+) concentration within the axially compressed Ti(4+)-site of the Sr2TiO4 host...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28714677/synthesis-of-manganese-zif-8-from-mn-bh4-2%C3%A2-3thf-%C3%A2-nabh4
#20
Kentaro Kadota, Easan Sivaniah, Sareeya Bureekaew, Susumu Kitagawa, Satoshi Horike
Cubic and highly porous [Mn(2-methylimidazolate)2] (Mn-ZIF-8) was synthesized from [Mn(BH4)2·3THF]·NaBH4 under an Ar atmosphere. The structure contains rare Mn(2+)-4N tetrahedral geometry and has larger cell parameters, resulting in 20% larger amounts of gas uptake compared with [Zn(2-methylimidazolate)2]. A kinetically favored reaction using a reactive metal borohydride precursor is key for the construction of new metal-organic framework systems.
July 17, 2017: Inorganic Chemistry
journal
journal
23154
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"