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1.
Russian Chemical Bulletin - The reaction of poorly soluble manganese(II) bis(1-hydroxyethylidene)diphosphonate tetrahydrate (Mn(H3L)2?4H2O) with 2-aminoethanol (H2NCH2CH2OH) in an aqueous... 相似文献
2.
The reaction of an aqueous suspension of basic cobalt carbonate CoCO 3·4Co(OH) 2·3H 2O with equimolar amount or two-fold excess of 1-hydroxyethylydenediphosphonic acid (H 4L) has yielded crystalline CoH 2L and amorphous Co(H 3L) 2 products, respectively. The interaction of poorly soluble CoH 2L complex with 2-aminoethanol has resulted in the formation of amorphous water-soluble CoH 2L·H 2NCH 2CH 2OH·6Н 2О complex; the latter loses 5 water molecules at heating and is converted into CoH 2L·H 2NCH 2CH 2OH·Н 2О. The study of agrochemical effects of Co(H 3L) 2 and CoH 2L·H 2NCH 2CH 2OH·6Н 2О has revealed their advantage over the conventional salt form (cobalt sulfate) reflected in the reduced phytotoxicity of the element. The prepared compound containing 2-aminoethanol (solubility promotor) has revealed better performance. 相似文献
3.
A method to multifold increase the water solubility of diiron(III) tris[(hydroxyethylidene)-diphosphonate) tetrahydrate Fe 2(H 2L) 3·4H 2O and manganese(II) (hydroxyethylidene)diphosphonate dihydrate MnH 2L·2H 2O, prepared by the reaction of 1-hydroxyethylidene-1,1-diphosphonic acid with iron(III)hydroxide and basic manganese carbonate. The method involves conversion of the phosphonates into their double salts Fe 2K 6L 3·4H 2O [Fe 2(NH 4) 6L 3·4H 2O] and MnK 1.3H 0.7L·2H 2O [Mn(NH 4) 2L·2H 2O] by treatment of their aqueous suspensions with potassium or ammonium hydroxides. The solubility of the iron salt increases from 0.2 to 4.0 g per 100 mL solution (20 times) and that of the manganese salt increases from 0.1 to 4.8 g per 100 mL solution (45 times). 相似文献
4.
The reaction of aqueous suspension of finely dispersed iron with one equivalent of (1-hydroxyethylidene) diphosphonic acid (H4L) results in poorly soluble iron(II) (1-hydroxyethylidene)diphosphate FeH 2L·H 2O. The reaction with two equivalents of the acid gives a water-soluble compound Fe(H 3L) 2, which undergoes disproportionation up to FeH 2L·H 2O and H 4L. The reaction of a FeH 2L·H 2O aqueous suspension with an organic amine results in the dissolution of the complex. Heating the FeH 2L·H 2O aqueous suspension in a pressure reactor at 150°C in the presence of KF catalytic amounts causes the formation of a new crystal phase and X-ray-amorphous admixtures. 相似文献
5.
Bis(aminomethyl)phosphinic acid, (H 2NCH 2) 2P(O)OH · HCl, was prepared by debenzylation of (C 6H 5CH 2NHCH 2) 2P(O)OH · HCl with hydrogen using 5% Pd on C as catalyst, and from bis(t-butylaminomethyl)phosphinic acid, (t-C 4H 9NHCH 2) 2P(O)OH, by isobutylene elimination in concentrated aqueous hydrobromic acid at 175°C in sealed tube. Interaction of bis(chloromethyl)phosphinic acid with ammonia in an autoclave produced methylaminomethylphosphinic acid, CH 3NHCH 2P(O)(OH) 2. A mechanism for the formation of this product is proposed. Several derivatives of (H 2NCH 2)P(O)OH such as (RNHCH 2) 2P(O)OH, R = C 6H 5CO, CICH 2CO, [H 2NHNC(=NH)NHCH 2] 2P(O)OH and [(CH 3) 3SiNHCH 2] 2P(O)OSi(CH 3) 3 were prepared. 相似文献
6.
The hydrazone ( E)-3-hydroxy- N’-(1-(2-oxo-2H-chromen-3-yl)ethylidene)-2-naphthohydrazide (H 2L) was synthesized from the reaction of 3-acetylcoumarin and 3-hydroxy-2-naphthoic hydrazide in methanol. Compounds [Mn(H 2L)(NO 3) 2(CH 3OH)]·CH 3OH ( 1a), [Mn(HL)(NO 3)(CH 3OH)] n ( 1b), [Co(HL)(NO 3)(CH 3OH)] n ( 2), and [Cu(HL)(NO 3)] ( 3) were obtained by reaction of an equimolar amount of H 2L with nitrate salts of Mn(II), Co(II), or Cu(II) in methanol. The reaction of ligand and Mn(NO 3) 2·4H 2O was also carried out in the presence of sodium azide which led to the 1-D coordination polymer, [Mn(HL)(N 3)(CH 3OH)] n ( 4). All of the synthesized compounds were characterized by elemental analyses and spectroscopic methods. Single-crystal X-ray analysis of 1–4 indicated that H 2L is neutral (in 1a) or mononegative ligand (in 1b, 2, 3 and 4). In 1b, 2 and 4 the 1-D polymeric chain is found by a rare coordination mode of this kind of hydrazone ligand since the naphtholic oxygen is coordinated to the neighboring metal ions while the NH moiety of hydrazone remains intact, also confirmed by FT-IR spectroscopic studies. The thermal stability of 2 and 4 were also studied from 30–1000 °C. 相似文献
7.
The following water-soluble iron(III) and manganese(II) chelate complexes were obtained via the reaction of 1-hydroxyethylidene-1,1-diphosphonic acid (H 4L) with ferric hydroxide or basic manganese carbonate: Fe 2(H 2L) 3·4H 2O, Fe(H 3L) 3·4H 2O, MnH 2L·2H 2O, and Mn(H 3L) 2·4H 2O. The complexes solubility was of 33.0, 1.40, 0.1, and 0.4 g in 100 mL of water, respectively. The amorphous Fe 2(H 2L) 3·4H 2O underwent structural changes upon storage, its solubility decreasing. The prepared compounds are recommended for use as micro-fertilizers for drip irrigation of crops. 相似文献
8.
A suspension of sparingly soluble zinc (1-hydroxyethylidene)diphosphonate ZnH2L?2H2O (H4L = MeC(OH)[P(O)(OH)2]2) is rapidly transformed into an aqueous solution when treated with ammonia or aliphatic amines (hexamethylenediamine, triethylamine, tert-butylamine, di-n-butylamine) containing no hydrophilic groups ?OH and ?(OCH2CH2)n?. The dissolution effect is due to the decomposition of the coordination polymer giving ammonium derivatives. Dehydrated dry powders of the corresponding ammonium compounds based on triethylamine, tert-butylamine, or di-n-butylamine rapidly dissolve in water to form transparent colorless solutions, whereas hexamethylenediamine and ammonia derivatives are poorly soluble. (1-Hydroxyethylidene)diphosphonic acid forms ammonium salts with hexamethylenediamine, triethylamine, and tert-butylamine. The molecular structures of these compounds are considered. 相似文献
9.
Catalase-like activity of the TEMPO-activated (TEMPO: 2,2,6,6-tetramethyl-1-piperidinyloxyl) manganese(II) complex Mn(IndH)Cl 2·CH 3OH (IndH: 1,3-bis[(2′-pyridylimino)isoindoline] is reported. The title compound was a suitable catalyst for the disproportionation
of H 2O 2 into water and dioxygen under ambient conditions. Kinetic measurements resulted in the third-order rate equation d[O 2]/dt = k[H 2O 2][Mn(IndH)Cl 2·CH 3OH][TEMPO]. 相似文献
10.
Three multinuclear Cu (II), Zn (II) and Cd (II) complexes, [Cu 2(L)( μ‐OAc)]·CHCl 2 ( 1 ), [Zn 2(L)( μ‐OAc)(H 2O)]·3CHCl 3 ( 2 ) and [{Cd 2(L)(OAc)(CH 3CH 2OH)} 2]·2CH 3CH 2OH ( 3 ) with a single‐armed salamo‐like dioxime ligand H 3L have been synthesized, and characterized by FT‐IR, UV–vis, X‐ray crystallography and Hirshfeld surfaces analyses. The ligand H 3L has a linear structure and C‐H···π interactions between the two molecules. The complex 1 is a dinuclear Cu (II) complex, Cu1 and Cu2 are all five‐coordinate possessing distorted square pyramidal geometries. The complex 2 also forms a dinuclear Zn (II) structure, and Zn1 and Zn2 are all five‐coordinate bearing distorted trigonal bipyramidal geometries. The complex 3 is a symmetrical tetranuclear Cd (II) complex, and Cd1 is a hexa‐coordinate having octahedral configuration and Cd2 is hepta‐coordinate with a pentagonal bipyramidal geometry, and it has π···π interactions inside the molecule. In addition, fluorescence properties of the ligand and its complexes 1 – 3 have also been discussed. 相似文献
11.
Six coordination compounds constructed by two structurally related flexible nitrogen-containing polycarboxylate ligands 2,2′-(2,2′-(ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(methylene)bis(azanediyl)dibenzoic acid (H 2L1) and 5,5′-(2,2′-(ethane-1,2-diylbis(oxy))bis(2,1-phenylene))bis(methylene)bis(azanediyl)diisophthalic acid (H 4L2) have been synthesized: [Ni(H 2O) 6]?·?L1?·?(C 2H 5OH) 0.5?·?H 2O ( 1), [Co(L1)(L3)]?·?CH 3OH ( 2), [Ni(L1)(L3)]?·?CH 3OH ( 3), [Zn(L1)(L3)]?·?CH 3OH ( 4), [Cd(L1)(L3)]?·?CH 3OH ( 5), and [Zn(L2) 0.5(phen)]?·?C 2H 5OH ( 6), where L3?=?3,4?:?9,10?:?17,18?:?23,24-tetrabenzo-1,12,15,26-tetraaza-5,8,19,22-tetraoxacyclooctacosan and phen?=?1,10-phenanthroline. The crystal structures have been determined by single-crystal X-ray diffraction. Compound 1 displays a discrete structure, which is further linked by hydrogen bonds to form a 2-D supramolecular layer. Compounds 2– 5 display similar structures. These compounds possess 1-D meso-chain structures linked by L1 and metals. The C–H?···?π interactions from neighboring chains extend the chains in different directions, giving a 3-D plywood network. Compound 6 possesses 2-D layers, which are further linked by hydrogen-bonding interactions to generate a 3-D supramolecular architecture. 相似文献
12.
Neutral manganese and nickel complexes of the empirical formulae Mn(H 2daps)(H 2O) 0.5 and Ni(H 2daps) · (H 2O) 1.5(CH 3CN) have been prepared by electrochemical syntheses. The structures of the complexes formed from solvents with different donor ability were investigated. Recrystallisation of Mn(H 2daps)(H 2O) 0.5 from pyridine and ethanol yields [Mn(H 2daps)(py) 2] 1 and [Mn(H 2daps)(C 2H 5OH) · (H 2O)] 2 . Slow evaporation of dichloromethane and methanol solutions of Ni(H 2daps)(H 2O) 1.5(CH 3CN) allows the isolation of single crystals of [Ni 2(H 2daps) 2] · CH 2Cl 2 4 and [Ni 2(H 2daps) 2(CH 3OH) 2] · 3 CH 3OH · H 2O 5 , suitable for X‐ray diffraction studies. Recrystallisation of 4 from pyridine yields [Ni 2(H 2daps) 2(py) 2] · CH 2Cl 2 6 , previously characterised by us. This study shows the versatility of the H 4daps ligand and the influence that the crystallisation solvent can have on the crystal structure of these complexes. 相似文献
13.
Two picolinate-containing nickel(II) complexes [Ni(bbma)(pic)(H 2O)]ClO 4 · CH 3OH ( 1) and [Ni(ntb)(pic)]Cl · CH 3OH · 3H 2O ( 2) were synthesized and characterized by infrared, elemental analysis, UV-Vis, and X-ray diffraction analyses, where bbma is bis(benzimidazol-2-yl-methyl)amine, ntb is tris(2-benzimidazolylmethyl)amine, pic is the anion of picolinic acid. X-ray analysis shows that both complexes are mononuclear with picolinate coordinated to Ni(II) in a μ 2-N,O chelating mode. Both complexes adopt distorted octahedral geometry. Intermolecular N–H ··· O and O–H ··· O hydrogen bonds and π–π interactions in 1 and 2 are important in stabilization of the crystal structures. 相似文献
14.
Synthesis and characterization of a mononuclear nickel(II) complex [NiL] · CH 3OH (I) and a dinuclear manganese(III) complex [Mn 2L 2(NCS) 2] (II) derived from the bis-Schiff base N, N'-bis(5-methoxysalicylidene)-1,2-ethanediamine (H 2L) are reported. The complexes were characterized by elemental analyses, IR spectra and molar conductivity. Single crystal X-ray structures of the complexes have been determined (CIF files CCDC nos. 1056778 (I) and 1056688 (II)). The Ni atom in I is in a square planar coordination, and the Mn atom in II is in an octahedral coordination. Catalytic property for epoxidation of styrene by the complexes using PhIO and NaOCl as oxidant has been studied. As a result, complex II is efficient for the styrene epoxidation. 相似文献
15.
Five new coordination compounds, {[Mn(L)(CH 3OH) 2] · CH 3OH · H 2O} n ( 1), {[Cd(L)(DMF) 2(H 2O)] · H 2O} n ( 2), {[Co(L)(CH 3OH) 4] · CH 3OH} 2 ( 3), {[Cd(L)(phen)(CH 3OH)] · CH 3OH} n ( 4), and {[Mn(L)(phen)(H 2O)] · CH 3OH} n ( 5) (L = 5-ferrocene-1,3-benzenedicarboxylic acid, phen = 1,10-phenanthroline) were obtained from different metal salts and L with or without 1,10-phen under mild conditions. Complex 1 is a 1-D ladder-like chain composed of 8-membered rings A and 16-membered rings B, which arrange alternately. Complex 2 is an infinite linear chain, further bridged to form a parallel double chain through different hydrogen-bond interactions. Complex 3 is a discrete dinuclear structure, while 4 is a neutral 1-D infinite zigzag coordination chain. Complex 5 is a 1-D linear chain with phen and ferrocene groups of L as pendants hanging on the different sides of the main chain. Variable temperature magnetic susceptibilities of 1 were measured and weak antiferromagnetic exchange interactions between the neighboring Mn(II) ions were found with J = ?0.95 cm ?1. 相似文献
16.
The coordinating properties of a new bis(pyridylhydrazone) ligand derived from iminodiacetic acid diethyl ester and 2-pyridinecarboxaldehyde
(picolinaldehyde) H 3Imdp and of the bis(salicylhydrazone) H 5Imds and H 4MeImds ligands derived, respectively, from iminodiacetic acid diethyl ester and from methyl-iminodiacetic acid diethyl ester
and salicylaldehyde were considered, by means of analytical and spectroscopic methods, towards first row transition metal
ions. These ligands showed various coordination modes in complexation with Cu(II), Co(II), Mn(II) and Zn(II) ions. In particular,
we have synthesized and characterized, by analytical, 1H NMR and IR techniques, tri-, di- and mononuclear metal complexes of formula Co 3(HImdp)(NO 3) 4·2H 2O, Cu 3(HImdp)(NO 3) 4·C 2H 5OH·H 2O, Cu 3(HImdp)Cl 4, Zn 2(H 3Imdp)(ClO 4) 4·2H 2O, Co 3(HImds)Cl 2·CH 3OH·H 2O, Zn 2(H 3Imds)Cl 2·2H 2O, Co(H 4Imds)NO 3·2H 2O, Mn(H 4Imds)Cl·CH 3OH·H 2O, Cu(H 3Imds)·CH 3OH·H 2O and Cu(H 2MeImds) .CH 3OH·3H 2O. Antibacterial, antifungal and antiprotozoal properties of H 5Imds and H 3Imdp together with three copper(II) trinuclear species of H 5Imds of formula Cu 3(HImds)(NO 3) 2.2CH 3OH·2H 2O, Cu 3(HImds)(ClO 4) 2.EtOH·2H 2O and Cu 3(HImds)SO 4·4H 2O are also discussed. The H 5Imds ligand and their trinuclear copper(II) complexes showed good activities versus Trichomonas vaginalis, Staphylococcus epidermidis and Acanthamoeba castellanii. 相似文献
17.
Three multinuclear complexes, [Co(L)(OAc)Co(CH 3CH 2OH) 2]·H 2O, [Zn(L)(OAc)Zn(CH 3OH)], and [{Cd(L)(OAc)Cd(CH 3OH)} 2], containing a single-armed salamo-type bisoxime H 3L have been synthesized and characterized structurally. The Co(II) complex forms a dimeric unit by intermolecular hydrogen bond interactions of neighboring dimeric molecules. The Zn(II) complex also forms a dimeric unit by intermolecular hydrogen bond interactions. Interesting features of the crystal structure include O?O short contacts. Meanwhile, self-assembling infinite 1-D, 2-D, and 3-D supramolecular structures are formed by intermolecular hydrogen bond and C–H? π interactions. The Cd(II) complex forms an infinite 2-D supramolecular structure by intermolecular hydrogen bond interactions. The photophysical properties of the Co(II), Zn(II), and Cd(II) complexes have also been discussed. 相似文献
18.
Two novel manganese(II) complexes, [Mn(phen) 2N 3·H 2O]ClO 4·H 2O and Mn(phen) 2(N 3) 2 have been synthesized by the reaction of Mn(ClO 4) 2·6H 2O and Mn(CH 3CO 2) 2·4H 2O with NaN 3 and phen in EtOH/H 2O solution, respectively (where phen = 1,10-phenanthroline). Their crystal structures have been determined by X-ray diffraction. Both complex molecules have distorted octahedral geometry and two 1,10-phenanthroline molecules chelate to a Mn(II) atom with a cis-configuration. To [Mn(phen) 2N 3·H 2O]ClO 4·H 2O, one nitrogen atom from an azide anion and one oxygen atom from a water molecule cis-coordinate to the Mn(II) atom while two nitrogen atoms occupy cis positions in Mn(phen) 2(N 3) 2. These complexes are versatile precursors for the design of heteropolymetallic systems. 相似文献
19.
Two new ternary complexes of manganese(II) with tris(2-benzimidazylmethyl)amine (ntb), and two different α,β-unsaturated carboxylates, {[Mn(ntb)(acrylate)](ClO 4)} 2?·?(H 2O)·3(CH 3OH) ( 1) and {[Mn(ntb)(α-methacrylate)](ClO 4)} 2·(H 2O)·2(CH 3OH) ( 2), have been synthesized and characterized by means of elemental analyses, thermal analyses, IR, UV and single crystal X-ray diffraction. In the two complexes, ntb functions as a tripodal tetradentate ligand, resulting in trigonal pyramidal geometry. In each complex, an additional ligand, acrylate anion, or α-methacrylate anion, is coordinated at the opened site trans to the apical nitrogen atom of the ntb ligand. The crystal structure of 1 shows two crystallographically independent but chemically identical [Mn(ntb)(acrylate)] + cations. In 2, the crystal structure shows two crystallographically independent and chemically different [Mn(ntb)( a-methacrylate)] + cations. Cyclic voltammograms of the manganese complexes indicate a quasireversible Mn 3+/Mn 2+ couple. The X-band EPR spectrum of the complexes exhibits a six-line manganese hyperfine pattern with g?=?2, A?=?97 ( 1) and 93?G ( 2). The spectrum confirms that the material is high-spin Mn(II). 相似文献
20.
Two new divalent metal aminodiphosphonates with a layered structure, Mn 2[(HL)(H 2O)F]·H 2O ( 1) and Cd 3.5[(HL)L] ( 2) (H 4L =?CH 3CH 2CH 2N(CH 2PO 3H 2) 2), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction as well as with infrared spectroscopy, elemental analysis and thermogravimetric analysis. In 1, two MnO 4F 2 and two MnO 5F polyhedra are interconnected via edge-sharing into a tetramer, and such tetramers are bridged by the diphosphonate ligands into a Mn(II) phosphonate layer in the ab-plane. The structure of 2 also features a 2D layered structure, in which the CdO 5N and CdO 6 polyhedra are interconnected into a 1D chain. The chains are then cross-linked via phosphonate oxygen atoms to form Cd(II) phosphonate layers in the ab-plane. 相似文献
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