1802-30-8Relevant articles and documents
Design, synthesis and characterization of a Pt-Gd metal-organic framework containing potentially catalytically active sites
Szeto, Kai C.,Kongshaug, Kjell Ove,Jakobsen, Soren,Tilset, Mats,Lillerud, Karl Petter
, p. 2054 - 2060 (2008)
The heterobimetallic metal-organic framework {[(BPDC)PtCl2] 3(Gd(H2O)3)2}?5H2O (BPDC = 2,2′-bipyridine-5,5′-dicarboxylate) has been designed and synthesized by hydrothermal methods. The new coordination polymer contains subunits of (BPDC)PtCl2 (1) where both N atoms of the BPDC ligand are attached to a square-planar Pt(ii) center. The two remaining cis coordination sites at Pt(ii) are occupied by chloride ions. The final structure (2) of the polymeric network is obtained when Gd(iii) ions link together the (BPDC)PtCl2 units, which are organized in sheets, into larger blocks. These blocks are stacked along the crystallographic [010] direction and are held together by a hydrogen bonding scheme that involves carboxylate oxygen atoms and water molecules in the coordination sphere of Gd. The coordination polymer 2 can be obtained in a single-step reaction or in a two-step synthesis where the corresponding Pt complex (1) was first synthesized followed by reacting 1 with Gd(NO3)3?6H2O. In situ high temperature powder X-ray diffraction shows that the crystalline coordination polymer transforms into an anhydrous modification at 100 °C. This modification is stable to 350 °C, at which temperature the structure starts to decompose. The coordination sphere around platinum in the polymer closely resembles organometallic Pt complexes that have been previously found to catalytically or stoichiometrically activate and functionalize hydrocarbon C-H bonds in homogeneous systems. The Royal Society of Chemistry.
Construction of metal-organic frameworks: Versatile behaviour of a ligand containing mono-and bidentate coordination sites
Jacobs, Tia,Hardie, Michaele J.
, p. 267 - 276 (2012)
Five new coordination polymers based on a new 2,2′-bipyridine derived ligand N,N'-bis(pyridin-4-yl)-2,2′-bipyridine-5,5′-dicarboxamide (=L) are reported herein. Isostructural three-dimensional coordination polymers with a rare (4,6)-connected network of {
Tuning the flexibility in MOFs by SBU functionalization
Bon, Volodymyr,Kavoosi, Negar,Senkovska, Irena,Müller, Philipp,Schaber, Jana,Wallacher, Dirk,T?bbens, Daniel M.,Mueller, Uwe,Kaskel, Stefan
, p. 4407 - 4415 (2016)
A new approach for the fine tuning of flexibility in MOFs, involving functionalization of the secondary building unit, is presented. The "gate pressure" MOF [Zn3(bpydc)2(HCOO)2] was used as a model material and SBU functio
Spectroscopic and 1O2 Sensitization Characteristics of a Series of Isomeric Re(bpy)(CO)3Cl Complexes Bearing Pendant BODIPY Chromophores
Potocny, Andrea M.,Teesdale, Justin J.,Marangoz, Alize,Yap, Glenn P. A.,Rosenthal, Joel
, p. 5042 - 5050 (2019)
Two new Re(I)bipyridyltricarbonyl chloride complexes, Re(BB3)(CO)3Cl and Re(BB4)(CO)3Cl, featuring BODIPY groups appended to the 5,5′- or 6,6′-positions of the bipyridine ligand, respectively, were synthesized as structurally isomeric compliments to a previously reported 4,4′-substituted homologue, Re(BB2)(CO)3Cl. X-ray crystal structures of the compounds show that the 4,4′-, 5,5′-, and 6,6′-substitution patterns place the BODIPY groups at progressively shorter distances of 9.43, 8.39, and 5.56 ?, respectively, from the complexes' Re centers. The photophysical properties of the isomeric complexes were investigated to ascertain the manner in which the heavy rhenium atom might induce intersystem crossing of the pendant BODIPY moieties positioned at progressively shorter through-space distances. Electronic absorption spectroscopy revealed that the three metal complexes retain the strong visible absorption features characteristic of the bpyBODIPY (BB2-BB4) ligands; however, the fluorescence of the parent borondipyrromethane appended ligands is attenuated by more than an order of magnitude in Re(BB2)(CO)3Cl and Re(BB3)(CO)3Cl and by more than two orders of magnitude in Re(BB4)(CO)3Cl. Furthermore, phosphorescence from Re(BB4)(CO)3Cl is observed under a nitrogen atmosphere, consistent with highly efficient ISC to the triplet-excited state. Singlet oxygen sensitization studies confirm that all three complexes produce singlet oxygen with quantum yields that increase as the distance of the BODIPY groups to the heavy rhenium center is decreased. The trends observed across the series of rhenium complexes with respect to emission and 1O2 sensitization properties can be rationalized in terms of the varied distal separation between the metal center and BODIPY groups in each system.
Synthesis, electrochemistry, and electrogenerated chemiluminescence of two BODIPY-appended bipyridine homologues
Qi, Honglan,Teesdale, Justin J.,Pupillo, Rachel C.,Rosenthal, Joel,Bard, Allen J.
, p. 13558 - 13566 (2013)
Two new 2,2′-bipyridine (bpy) derivatives containing ancillary BODIPY chromophores attached at the 5- and 5′-positions (BB3) or 6- and 6′-positions (BB4) were prepared and characterized. In this work, the basic photophysics, electrochemistry, and electrog
High gas storage capacities and stepwise adsorption in a UiO type metal-organic framework incorporating Lewis basic bipyridyl sites
Li, Liangjun,Tang, Sifu,Wang, Chao,Lv, Xiaoxia,Jiang, Min,Wu, Huaizhi,Zhao, Xuebo
, p. 2304 - 2307 (2014)
A UiO type MOF with Lewis basic bipyridyl sites was synthesized and structurally characterized. After being activated by Soxhlet-extraction, this MOF exhibits high storage capacities for H2, CH4 and CO2, and shows unusual
Neutral metal coordination compound iridium-dipyridyl dicarboxylic acid crystal material and preparation method thereof
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Paragraph 0037; 0040-0041, (2021/05/01)
The invention belongs to the field of chemical sensors and the field of laser protection, and discloses a neutral metal coordination compound iridium-dipyridyl dicarboxylic acid crystal material and a preparation method thereof. According to the invention
Dual-fixations of europium cations and TEMPO species on metal-organic frameworks for the aerobic oxidation of alcohols
Jeoung, Sungeun,Kim, Min,Kim, Seongwoo,Lee, Jooyeon,Moon, Hoi Ri
supporting information, p. 8060 - 8066 (2020/07/10)
The efficient and selective aerobic oxidation of alcohols has been investigated with judicious combinations of europium-incorporated and/or TEMPO ((2,2,6,6-tetramethylpiperidin-1-yl)oxyl)-functionalized zirconium-based porous metal-organic frameworks (MOFs). Although MOFs are well-known catalytic platforms for the aerobic oxidation with radical-functionalities and metal nanoparticles, these systematic approaches involving metal cations and/or radical species introduce numerous interesting aspects for cooperation between metals and TEMPO for the aerobic oxidation of alcohols. The role of TEMPO as the oxidant in the heterogeneous catalytic aerobic oxidation of alcohols was revealed through a series of comparisons between metal-anchored, TEMPO-anchored, and metal and TEMPO-anchored MOF catalysis. The fine tunability of the MOF allowed the homogeneously and doubly functionalized catalysts to undergo organic reactions in the heterogeneous media. In addition, the well-defined and carefully designed heterogeneous molecular catalysts displayed reusability along with better catalytic performance than the homogeneous systems using identical coordinating ligands. The role of metal-cation fixation should be carefully revised to control their coordination and maximize their catalytic activity. Lastly, the metal cation-fixed MOF displayed better substrate tolerance and reaction efficiencies than the TEMPO-anchored MOF or mixture MOF systems.
