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Dalton Transactions: An International Journal of Inorganic Chemistry

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https://www.readbyqxmd.com/read/29774906/reactivity-of-a-dearomatised-pincer-co-ii-br-complex-with-pnc-nhc-donors-alkylation-and-si-h-bond-activation-via-metal-ligand-cooperation
#1
Thomas Simler, Sylvie Choua, Andreas A Danopoulos, Pierre Braunstein
The double aminolysis reaction of [Co{N(SiMe3)2}2] by the salt 1-(6-((dicyclohexylphosphaneyl)methyl)pyridin-2-yl)-3-(2,6-diisopropylphenyl)-1H-imidazol-3-ium bromide, which contains one phosphane, one pyridine and one imidazolium groups, of formula [o-Cy2PCH2(C5H3N)(o-C3H3N2DiPP)]Br and abbreviated as (CyPNpyrCim)Br, was previously shown to afford the Co(ii) complex [Co(CyP*NaCNHC)Br] (1) containing a dearomatised picolyl moiety in the tridentate, anionic donor ligand CyP*NaCNHC (Na = anionic amido, P* = vinylic P donor)...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774905/dual-emissions-and-thermochromic-luminescences-of-isomorphic-chiral-twofold-interpenetrated-3-d-nets-built-from-i-1-o-2-type-hybrid-inorganic-organic-frameworks-of-nh-2-ch-3-2-3-pb-2-x-3-bdc-2-x-br-i
#2
Shao-Xian Liu, Guo-Jun Yuan, Lu Zhai, Lifeng Wang, Hong-Bin Luo, Xiao-Ming Ren
Two pairs of MOF-based hybrid enantiomorphs, [NH2(CH3)2]3[Pb2X3(BDC)2] (H2BDC = 1,4-benzenedicarboxylic acid, X = Br or I), have been synthesized using the solvothermal reaction and then manually separated, which are labeled as 1a/1b (X = Br) and 2a/2b (X = I). The isomorphic 1a and 2a crystallize in tetragonal space group P43212, and the isomorphic 1b and 2b in the enantiomorphic space group P41212. Twofold interpenetrated three-dimensional (3-D) networks were built from two sets of equivalent I1O2 type hybrid inorganic-organic frameworks in 1a/1b and 2a/2b...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774904/investigating-subtle-4f-vs-5f-coordination-differences-using-kinetically-inert-eu-iii-tb-iii-and-cm-iii-complexes-of-a-coumarin-appended-1-4-7-10-tetraazacyclododecane-1-4-7-triacetate-do3a-ligand
#3
Anne Kathrine R Junker, Gauthier J-P Deblonde, Rebecca J Abergel, Thomas Just Sørensen
In order to reveal subtle differences between the solution chemistries of trivalent 4f and 5f elements, the physicochemical and photophysical properties of europium(iii), terbium(iii) and curium(iii) complexes formed with a 7-methoxy-coumarin appended 1,4,7,10-tetraazadodecane-1,4,7-triacid (DO3A) ligand were studied. All three complexes were found to be kinetically inert and exhibit stability constants similar to their 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) equivalents. The Cm(iii) and Eu(iii) complexes feature strong sensitised emission, while the triplet energy of the coumarin prohibits efficient sensitisation of the Tb(iii) analogue...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774903/reactivity-studies-of-an-imine-functionalised-phosphaalkene-unusual-electrostatic-and-supramolecular-stabilisation-of-a-%C3%AF-2-%C3%AE-3-phosphorus-motif-via-hydrogen-bonding
#4
Daniel Morales Salazar, Arvind Kumar Gupta, Andreas Orthaber
A P[double bond, length as m-dash]C heavy-alkene analogue that is unreactive towards the addition of strong acids on its double-bond is presented; instead, a strategically located imine nitrogen on the periphery forms protonated adducts displaying hydrogen bonding interactions. These materials are significantly more stable than the parent species, demonstrating an unprecedented approach towards the stabilisation of a multiple-bonded heavy main group fragment, in this case, a phosphaalkene. An HCl adduct self-assembles with H2O into a dimeric network displaying a discrete quadrilateral hydrogen-bonded arrangement...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774898/chiroptical-methods-in-a-wide-wavelength-range-for-obtaining-ln-3-complexes-with-circularly-polarized-luminescence-of-practical-interest
#5
Marcin Górecki, Luca Carpita, Lorenzo Arrico, Francesco Zinna, Lorenzo Di Bari
We studied enantiopure chiral trivalent lanthanide (Ln3+ = La3+, Sm3+, Eu3+, Gd3+, Tm3+, and Yb3+) complexes with two fluorinated achiral tris(β-diketonate) ligands (HFA = hexafluoroacetylacetonate and TTA = 2-thenoyltrifluoroacetonate), incorporating a chiral bis(oxazolinyl)pyridine (PyBox) unit as a neutral ancillary ligand, by the combined use of optical and chiroptical methods, ranging from UV to IR both in absorption and circular dichroism (CD), and including circularly polarized luminescence (CPL). Ultimately, all the spectroscopic information is integrated into a total and a chiroptical super-spectrum, which allows one to characterize a multidimensional chemical space, spanned by the different Ln3+ ions, the acidity and steric demand of the diketone and the chirality of the PyBox ligand...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774354/chemo-chromism-in-an-orthogonal-dabco-based-co-ii-network-assembled-by-methanol-coordination-and-hydrogen-bond-formation
#6
Misaki Shiga, Shogo Kawaguchi, Masaru Fujibayashi, Sadafumi Nishihara, Katsuya Inoue, Tomoyuki Akutagawa, Shin-Ichiro Noro, Takayoshi Nakamura, Ryo Tsunashima
Newly prepared single crystals of [Co(ii)(dabco)(NCS)2(MeOH)2]·dabco (1-pink; dabco: 1,4-diazabicyclo[2.2.2]octane) showed chromotropic behaviour in the solid state, changing from pink to blue upon heating or grinding. The complex 1-pink exhibited a two-dimensional orthogonal network structure with the coordination chain of -dabco-Co- bridged by hydrogen bonds between coordinative methanol and a second dabco molecule, where the methanol molecule was trapped by coordinative and hydrogen bonds. Chromism was demonstrated to stem from the quantitative desorption of methanol from 1-pink to produce [Co(ii)(dabco)(NCS)2]·dabco (1-blue(c)) by thermogravimetric (TG) and temperature controlled gas chromatography-mass spectrometry (GC-MS) analyses, and powder X-ray diffraction (XRD) analysis suggests that the transformation between the crystalline phases of 1-pink and 1-blue(c) occurred with similar lattice parameters...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774352/a-novel-efficient-g-c-3-n-4-bioi-p-n-heterojunction-photocatalyst-constructed-through-the-assembly-of-g-c-3-n-4-nanoparticles
#7
Zengyu You, Chenyan Wu, Qianhong Shen, Yang Yu, Hao Chen, Yuxuan Su, Hui Wang, Chunchun Wu, Fang Zhang, Hui Yang
An efficient and facile method to fabricate a surficial dispersive heterojunction based on the assembly of g-C3N4 nanoparticles was proposed. A p-n nano heterojunction composed of BiOI and g-C3N4 was constructed by simply loading g-C3N4 nanoparticles on flower-like BiOI nanosheets. The structure-dependent optical, electronic and photoelectric properties were investigated, and the structure-property relationship was discussed. The results show that the g-C3N4 nanoparticles are uniformly loaded on the surface of BiOI nanosheets and thus form a p-n heterojunction with an intimate interface...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774348/a-new-series-of-co-ni-zn-and-cd-metal-organic-architectures-driven-by-an-unsymmetrical-biphenyl-tricarboxylic-acid-hydrothermal-assembly-structural-features-and-properties
#8
Jin-Zhong Gu, Yan Cai, Zi-Yue Qian, Min Wen, Zi-Fa Shi, Dong-Yu Lv, Alexander M Kirillov
This study reports the hydrothermal synthesis of a novel series of twelve coordination compounds, namely, {[Cd(μ-Hnbtc)(H2O)4]·H2O}n (1), [Zn2(μ-Hnbtc)2(phen)2]·2H2O (2), [Zn(Hnbtc)(phen)2(H2O)]·4.5H2O (3), [Ni(Hnbtc)(phen)2(H2O)]·6H2O (4), [Zn2(μ-Hnbtc)2(2,2'-bipy)2]·2H2O (5), [Cd3(μ5-nbtc)(μ6-nbtc)(2,2'-bipy)2(H2O)]n (6), {[Zn3(μ3-nbtc)2(phen)3(H2O)2]·4H2O} (7), [Co(H2O)6][Co2(nbtc)2(μ-4,4'-bipy)(4,4'-bipy)2(H2O)6]·8H2O (8), {[Ni3(μ4-nbtc)2(μ-4,4'-bipy)2.5(μ-H2O)(H2O)3]·4H2O}n (9), {[Cd2(μ4-nbtc)(μ-OH)(2,2'-bipy)2]·H2O}n (10), [Cd2(μ4-nbtc)(μ-OH)(phen)2(H2O)]n (11), and {[Zn2(μ5-nbtc)(μ3-OH)(μ-4,4'-bipy)]·4,4'-bipy·H2O}n (12), which are derived from 3'-nitro-biphenyl-2,4,4'-tricarboxylic acid (H3nbtc) as a virtually unexplored building block...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774331/heterobimetallic-triple-decker-complexes-derived-from-a-dianionic-aromatic-stannole-ligand
#9
Masaichi Saito, Naoki Matsunaga, Jumpei Hamada, Shunsuke Furukawa, Mao Minoura, Susann Wegner, Juri Barthel, Christoph Janiak
A neutral heterobimetallic triple-decker stannole complex was prepared by the reaction of an anionic ruthenocene bearing a stannole dianionic ligand with [Rh(cod)Cl]2 (cod = 1,5-cyclooctadiene), and the resulting Ru-Rh complex exhibits an electronic property different from those of the corresponding Ru-Ru and Rh-Rh complexes. The Ru-Rh complex can be decomposed in ionic liquids to metal nanoparticles.
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29774329/syntheses-and-studies-of-electron-energy-transfer-of-new-dyads-based-on-an-unsymmetrical-perylene-diimide-incorporating-chelating-1-10-phenanthroline-and-its-corresponding-square-planar-complexes-with-dichloroplatinum-ii-and-dichloropalladium-ii
#10
Sebile Işık Büyükekşi, Ahmet Karatay, Nursel Acar, Betül Küçüköz, Ayhan Elmali, Abdurrahman Şengül
Perylene diimides (PDIs) are among the most versatile and functional dyes for supramolecular structures displaying characteristic high absorptions and photo-luminescence properties as the prerequisite for optoelectronic thin film devices. Despite intense investigations into these semi-conducting and electro-active materials, details of their electronic structure are still under examination. In particular, non-planar twisted PDIs as an electron acceptor is a promising model system for efficient charge generation and transport processes...
May 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770831/a-highly-luminescent-eu-iii-complex-based-on-an-electronically-isolated-aromatic-ring-system-with-ultralong-lifetime
#11
Yuichi Kitagawa, Fumiya Suzue, Takayuki Nakanishi, Koji Fushimi, Yasuchika Hasegawa
A luminescent Eu(iii) complex with a large electronically isolated aromatic ring system, Eu(hfa)3(DPPTO)2 (where hfa denotes hexafluoroacetylacetonate and DPPTO denotes 2-diphenylphosphoryltriphenylene), is reported. The light-harvesting efficiency of the Eu(iii) complex was assessed from electronic absorption spectra. Luminescence properties were evaluated from luminescence spectra, excitation spectra, luminescence quantum yields, and luminescence lifetimes. A remarkably brilliant luminescence was observed because of the strong light absorption and the high luminescence quantum yield of the Eu(iii) complex...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770823/fabrication-of-zinc-dicarboxylate-and-zinc-pyrazolate-carboxylate-framework-thin-films-through-vapour-solid-deposition
#12
Raghavender Medishetty, Zongji Zhang, Alexander Sadlo, Stefan Cwik, Daniel Peeters, Sebastian Henke, Nagarathinam Mangayarkarasi, Anjana Devi
Fabrication of three-dimensional metal-organic framework (MOF) thin films has been investigated for the first time through the conversion of a ZnO layer via a pure vapour-solid deposition reaction at ambient pressure. The fabrication of MOF thin films with a dicarboxylate linker, (DMA)2[Zn3(bdc)4] (1) (bdc = 1,4-benzenedicarboxylate), and a carboxy-pyrazolate linker, [Zn4O(dmcapz)6] (2) (dmcapz = 3,5-dimethyl-4-carboxypyrazole), involves the deposition of the linker and/or the preparation of a composite film preliminarily and its subsequent conversion into a MOF film using closed cell thermal treatment...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770819/a-porous-hierarchical-micro-nano-lini-0-5-mn-1-5-o-4-cathode-material-for-li-ion-batteries-synthesized-by-a-urea-assisted-hydrothermal-method
#13
Jiangfeng Wang, Xing Qin, Jianling Guo, Mushang Zhou, Bo Zong, Li Wang, Guangchuan Liang
A spinel LiNi0.5Mn1.5O4 cathode material was synthesized by a urea-assisted hydrothermal method followed by high-temperature calcination with a lithium source. The effects of the molar ratio of urea to transition metal ions (U/TM ratio) on the structure, morphology and electrochemical properties of the carbonate precursor and LiNi0.5Mn1.5O4 product were systematically investigated. The as-synthesized samples were characterized by XRD, FT-IR, SEM, TEM, a constant-current charge/discharge test, CV and EIS. XRD and FT-IR results show that the LiNi0...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770811/intrinsic-peroxidase-like-activity-and-enhanced-photo-fenton-reactivity-of-iron-substituted-polyoxometallate-nanostructures
#14
Akif Zeb, Shafaq Sahar, Umair Yaqub Qazi, Atheer Hameid Odda, Naseeb Ullah, Ya-Nan Liu, Ishtiaq A Qazi, An-Wu Xu
Heteropolyacids (HPAs) are a class of polyoxometallates (POMs) with oxygen-rich surfaces. Herein, we have developed an Fe-containing heteropolyacid by cation-exchange and employed KFePW12O40 nanostructures for Fenton, photo-Fenton and enzyme-mimetic reactions. The as-prepared KFePW12O40 catalyst exhibits efficient degradation of Rhodamine B (RhB) via the photo-Fenton reaction. As an enzyme-mimetic, this material can effectively oxidize TMB and dopamine. The obtained nanomaterials were characterized via SEM, TEM, XPS, BET surface area, TGA, UV-Vis spectroscopy, FT-IR, and XRD techniques...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770810/photoluminescent-carbon-dots-based-on-a-rare-3d-inorganic-organic-hybrid-cadmium-borate-crystal
#15
Kang Zhou, Wen-Jin Zhang, Yuan-Zhang Luo, Chun-Yang Pan
A 3D inorganic-organic hybridized skeleton cadmium borate [Cden][B5O8(OH)] (1) (en = ethylenediamine) has been solvothermally synthesized. By calcining it, specific shape carbon dots (C-dots) with abundant free radicals were observed. In addition, C-dots in the ethanol phase exhibited variable photoluminescence and showed rare turn on or off effects to Cr3+ ions and CdSe/ZnS quantum dots, but only a turn on effect to Cs+ ions and a turn off effect to CsPbBr3 quantum dots.
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770424/anion-induced-3d-4f-luminescent-coordination-clusters-structural-characteristics-and-chemical-fixation-of-co-2-under-mild-conditions
#16
Ruilian Zhang, Li Wang, Cong Xu, Huan Yang, Wanmin Chen, Guoshu Gao, Weisheng Liu
Two series of anion-induced 3d-4f luminescent clusters ZnII2LnIII2L4 (LnIII = Eu3+, Tb3+, Er3+, Yb3+, Nd3+) and ZnII4LnIII2L4 (LnIII = Tb3+, Nd3+) based on μ3-OH group were synthesized and characterized. The difference in anions not only leads to significant structural changes, but also changes the luminescent properties of the 3d-4f coordination clusters. These complexes show excellent catalytic performance for CO2 conversion to obtain cyclic carbonates with wide substrate scopes and high selectivity under mild conditions...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770414/mesoporous-germanium-nanoparticles-synthesized-in-molten-zinc-chloride-at-low-temperature-as-a-high-performance-anode-for-lithium-ion-batteries
#17
Xianyu Liu, Ning Lin, Wenlong Cai, Yingyue Zhao, Jianbin Zhou, Jianwen Liang, Yongchun Zhu, Yitai Qian
In a simple and convenient way, mesoporous germanium nanoparticles (mp-Ge NPs) are prepared by a "metathesis" reaction of magnesium germanide (Mg2Ge) and zinc chloride (ZnCl2) in an autoclave at 300 °C. Investigated as anode materials for lithium-ion batteries, the prepared mp-Ge NPs exhibit a high capacity retention of 1048 mA h g-1 at 1 C after 1000 cycles and a high rate capacity of 727.1 mA h g-1 at 10 C in Li-Ge half cells. Additionally, a 3.4 V lithium-ion full cell (Ge-LiCoO2) with an energy retention of 85% (∼268...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770411/diborane-heterolysis-breaking-and-making-b-b-bonds-at-magnesium
#18
Anne-Frédérique Pécharman, Michael S Hill, Mary F Mahon
Reaction of the dimeric β-diketiminato magnesium hydride [(BDI)MgH]2 (BDI = HC{(Me)CN-2,6-i-Pr2C6H3}2) with bis-pinacolatodiborane (B2pin2) resulted in B-O bond activation and formation of a magnesium complex of an unusual borylborohydride anion. In contrast, similar treatment of the mononuclear organomagnesium [{BDI}Mg(n-Bu)] with 4,4,4',4',6,6'-hexamethyl-2,2'-bi(1,3,2-dioxaborinane) (B2hex2) provided a B(sp2)-B(sp3) diborane anion, [(hex)BB(n-Bu)(hex)]-, with a constitution which is analogous to that formed in the previously reported reaction with bis(pinacolato)diboron (B2pin2)...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770407/-two-in-one-organic-inorganic-hybrid-mn-ii-complexes-exhibiting-dual-emissive-phosphorescence
#19
Alexey S Berezin, Denis G Samsonenko, Valery K Brel, Alexander V Artem'ev
Unprecedented organic-inorganic hybrid complexes, [Mn(L)3]MnHal4, containing both four- and hexacoordinated Mn2+ ions were synthesized by reacting MnCl2 or MnBr2 with bis(phosphine oxide) ligands (L) such as dppmO2, dppeO2, and 2,3-bis(diphenylphosphinyl)-1,3-butadiene (dppbO2). In the [Mn(L)3]2+ cation of the complexes, the Mn2+ ion features a [MnO6] octahedral coordination environment (Oh), and the [MnHal4]2- anion adopts a tetrahedral geometry (Td). These "two-in-one" complexes exhibit strong long-lived luminescence (τav = 12-15 ms at 300 K) having interesting thermochromic behavior attributed to the thermal equilibrium between two emission bands...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29770406/double-layer-zinc-udp-coordination-polymers-structure-and-properties
#20
Qi-Ming Qiu, Leilei Gu, Hongwei Ma, Li Yan, Minghua Liu, Hui Li
A homochiral Zn-UDP coordination polymer with an alternating parallel ABAB sequence was constructed and studied by X-ray single crystal diffraction analysis. Its crystal structure shows that there are potentially open sites in the 2D layers. The activation of the sites makes the coordination polymer a fluorescent sensor for novel heterogeneous detection of amino acids.
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
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