ALIPHATIC-AROMATIC HETEROCYCLIC COMPOUNDS AND USES THEREOF IN METAL EXTRACTANT COMPOSITIONS
申请人:CYTEC INDUSTRIES INC.
公开号:US20160244860A1
公开(公告)日:2016-08-25
The invention relates to an aliphatic-aromatic heterocyclic compound A which comprises at least two heterocyclic rings B and C, to a metal extractant composition E comprising this aliphatic-aromatic heterocyclic compound A and an organic acid D having at least one carboxylic, sulfonic, sulfuric, phosphinic, phosphonic, or phosphoric acid group, and to a process to extract one or more metals M selected from the group consisting of Ni and Co from an aqueous acidic leach solution PL comprising ions of at least one of the metals M, and further, at least one kind of further ions selected from the group consisting of Fe ions, Al ions, Cu ions, Mg ions, Mn ions, and also silicate anions, by mixing the solution PL with an extractant composition E, separating the organic and aqueous phases, and recovering the metal M from the separated organic phase.
Ascorbic acid decomposition into oxalate ions: a simple synthetic route towards oxalato-bridged heterometallic 3d–4f clusters
作者:Alina S. Dinca、Sergiu Shova、Adrian E. Ion、Catalin Maxim、Francesc Lloret、Miguel Julve、Marius Andruh
DOI:10.1039/c5dt00778j
日期:——
Dodecanuclear and hexanuclear heterometallic 3d–4f clusters have been obtained by connecting the lanthanide ions through oxalato bridges arising from the slow decomposition of the l-ascorbic acid.
One-dimensional coordination polymers constructed from di- and trinuclear {3d–4f} tectons. A new useful spacer in crystal engineering: 1,3-bis(4-pyridyl)azulene
作者:Adrian E. Ion、Simona Nica、Augustin M. Madalan、Catalin Maxim、Miguel Julve、Francesc Lloret、Marius Andruh
DOI:10.1039/c3ce41592a
日期:——
Four new heterometallic 3dâ4f complexes have been obtained using bi- and trinuclear building blocks: 1â[Ni(L1)Gd(NO3)3(azbbpy)]·CH3CN (1), [Zn(L1)Eu(NO3)3(azbbpy)]·H2O (2), 1â[(CuL2)2Gd(NO3)2(dca)] 3 and 1â[(NiL2)2Dy(H2O)4(oxy-bbz)]NO3·3H2O (4), [H2L1 = 1,3-propanediyl-bis(2-iminomethylene-6-methoxyphenol), H2L2 = 2,6-di(acetoacetyl)pyridine, azbbpy = 1,3-bis(4-pyridyl)azulene, dcaâ = dicyanamide anion, and oxy-bbz = the dianion of the 4,4â²-oxy-bis(benzoic) acid]. 1 and 2 represent the first complexes containing 1,3-bis(4-pyridyl)azulene as a ligand. 1, 3, and 4 are one-dimensional coordination polymers constructed from heterometallic nodes connected by the exo-dentate ligands. Helical chains are assembled in the case of 4. The analysis of the packing diagram for 1 reveals the occurrence of ÏâÏ stacking interactions established between the azulene rings from neighboring chains, which lead to supramolecular layers. The magnetic properties of 3 in the temperature range 1.9â300 K have been investigated. Intra-node ferromagnetic interactions are established between the CuII and GdIII ions (J = +2.7 cmâ1, Ĥ = âJ(ÅCu·ÅGd + ÅCu·ÅGd).
Structure and magnetism of a trinuclear CuII–GdIII–CuII complex derived from one-pot reaction with 2,6-di(acetoacetyl)pyridine
作者:Takuya Shiga、Masaaki Ohba、Hisashi Ōkawa
DOI:10.1016/s1387-7003(02)00674-3
日期:2003.1
Abstract A unique 3d–4f mixed metal trinuclearcompound, [Cu2Gd(L)2(NO3)2]NO3 (1; H2L=2,6-di(acetoacetyl)pyridine), is derived from a ‘one-pot’ reaction with H2L,Cu(NO3)2·3H2O and Gd(NO3)3·5H2O. Two L2− providing one central 2,6-diacylpyridine site and two terminal 1,3-diketonate sites hold two CuII ions and GdIII ion and form a linear Cu–Gd–Cu trinuclear core. This compound shows ferromagnetic interaction
Pyrazole–pyridine–pyrazole (NNN) ruthenium(<scp>ii</scp>) complex catalyzed acceptorless dehydrogenation of alcohols to aldehydes
作者:Yinyin Chen、Tianhua Cui、Hua Chen、Xue li Zheng、Haiyan Fu、Ruixiang Li
DOI:10.1039/d3dt01430d
日期:——
A new series of cationic ruthenium(II) complexes, [RuCl(PPh3)2(κ3-NNN-L1)]Cl (1), [RuH(PPh3)2(κ3-NNN-L2)]Cl (2), and [RuH(PPh3)2(κ3-NNN-L3)]Cl (3), bearing a 2,6-bis (1-R-5-methyl-pyrazol-3-yl) pyridine ligand (L1: R = H, L2: R = C6H4-p-CF3, L3: R = C6H4-p-OCH3), were synthesized and characterized with NMR, HRMS, and single-crystal X-ray diffraction. Their catalytic application was investigated in
一系列新的阳离子钌( II )配合物,[RuCl(PPh 3 ) 2 (κ 3 -NNN- L1 )]Cl ( 1 )、[RuH(PPh 3 ) 2 (κ 3 -NNN- L2 )]Cl ( 2 ) 和 [RuH(PPh 3 ) 2 (κ 3 -NNN- L3 )]Cl ( 3 ),带有 2,6-双 (1-R-5-甲基-吡唑-3-基) 吡啶配体 (合成了L1 : R = H、L2 : R = C 6 H 4 - p -CF 3、L3 : R = C 6 H 4 - p -OCH 3 ),并通过 NMR、HRMS 和单晶 X- 进行表征。射线衍射。研究了它们在伯醇无受体脱氢(AD)中的催化应用。配合物1对醛的选择性优于2和3,醛的收率高达99%,在温和条件下具有良好的官能团耐受性。此外,该反应唯一的副产物是氢气,可以作为清洁能源收集,符合环境友好化学的要求。配合物1也被证明是伯醇和仲醇之间连续