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1.
The reaction between Mn(OAc) 2·4H 2O and Br-saoH 2 (=5-Br-salicylaldoxime) in EtOH in the presence of NMe 4OH led to the formation of the hexanuclear cluster [Mn 6O 2(Br-sao) 6(OAc) 2(H 2O) 2(EtOH) 2]·2.8H 2O·2.2EtOH ( 1). Switching from Mn(OAc) 2·4H 2O to Mn(ClO 4) 2·6H 2O, the same reaction upon addition of pivH (= trimethyl acetic acid) yielded [Mn 6O 2(Br-sao) 6(piv) 2(H 2O) 2(EtOH) 2]·6EtOH ( 2 6EtOH), and finally upon changing pivH to NaO 2CPh, we were able to isolate [Mn 6Na 2O 2(Br-sao) 6(O 2CPh) 4(H 2O) 2(EtOH) 4]·6EtOH ( 3 6EtOH). Clusters 1 and 2 6EtOH describe “typical” [Mn 6/oximate] complexes consisting of two {Mn 3} oxo-centered triangular units bridged by oximate groups, while in 3 6EtOH these triangular motifs are separated by two sodium cations. An investigation into the magnetic properties of all three clusters revealed the presence of dominant antiferromagnetic interactions, leading to ground states of S = 4 and 2 for 1 and 3, respectively. Finally, cluster 2 6EtOH functions as a single-molecule magnet with Ueff = 27.54 K. 相似文献
2.
The synthesis, structural, and magnetic characterization of five new members of the hexanuclear oximate [Mn III6] family are reported. All five clusters can be described with the general formula [Mn III6O 2(R-sao) 6(R′-CO 2) 2(sol) x(H 2O) y] (where R-saoH 2 = salicylaldoxime substituted at the oxime carbon with R = H, Me and Et; R′ = 1-naphthalene, 2-naphthalene, and 1-pyrene; sol = MeOH, EtOH, or MeCN; x = 0–4 and y = 0–4). More specifically, the reaction of Mn(ClO 4) 2·6H 2O with salicylaldoxime-like ligands and the appropriate carboxylic acid in alcoholic or MeCN solutions in the presence of base afforded complexes 1– 5: [Mn 6O 2(Me-sao) 6(1-naphth-CO 2) 2(H 2O)(MeCN)]·4MeCN ( 1·4MeCN); [Mn 6O 2(Me-sao) 6(2-naphth-CO 2) 2(H 2O)(MeCN)]·3MeCN·0.1H 2O ( 2·3MeCN·0.1H 2O); [Mn 6O 2(Et-sao) 6(2-naphth-CO 2) 2(EtOH) 4(H 2O) 2] ( 3); [Mn 6O 2(Et-sao) 6(2-naphth-CO 2) 2(MeOH) 6] ( 4) and [Mn 6O 2(sao) 6(1-pyrene-CO 2) 2(H 2O) 2(EtOH) 2]·6EtOH ( 5·6EtOH). Clusters 3, 4, and 5 display the usual [Mn 6/oximate] structural motif consisting of two [Mn 3O] subunits bridged by two O oximate atoms from two R-sao 2? ligands to form the hexanuclear complex in which the two triangular [Mn 3] units are parallel to each other. On the contrary, clusters 1 and 2 display a highly distorted stacking arrangement of the two [Mn 3] subunits resulting in two converging planes, forming a novel motif in the [Mn 6] family. Investigation of the magnetic properties for all complexes reveal dominant antiferromagnetic interactions for 1, 2, and 5, while 3 and 4 display dominant ferromagnetic interactions with a ground state of S = 12 for both clusters. Finally, 3 and 4 display single-molecule magnet behavior with Ueff = 63 and 36 K, respectively. 相似文献
3.
Two complexes [Mn III4(naphthsao) 4(naphthsaoH) 4] ( 1 ) and [Fe III6O 2(naphthsao) 4(O 2CPh) 6] ( 2 ) [naphthsao = 1‐(1‐hydroxy‐naphthalen‐2‐yl)ethanone oxime] were obtained through the reactions of naphthsao ligand and MnCl 2 · 4H 2O or FeCl 3 · 6H 2O in the presence of triethylamine (Et 3N). Their structures were determined by X‐ray single crystal diffraction, elemental analysis, and IR spectra. Complex 1 displays 12‐MC‐4 metallacrown structural type with cube‐like configuration and 2 shows an offset stacked 10‐MC‐3 structural type with the ring connectivity containing Fe–O–C–O–Fe–O–N–Fe–O–N. Magnetic susceptibility measurement reveals the ferromagnetic interactions and field‐induced slow relaxation of the magnetization for 1 , whereas out‐of‐phase signal is not observed for 2 . 相似文献
4.
Two types of manganese complexes with [Mn 4] cores featuring the unusual distorted cube topology are presented, the first of which comprises new modifications of the reported complex [Mn III4(sao) 4(saoH) 4]·3CHCl 3: [Mn 4(sao) 4(saoH) 4]·1.32(C 4H 10O)·0.43(CH 4O) ( 1a ) and [Mn(sao) 4(saoH) 4]·0.5(CH 4O)·0.5(C 2H 3N) ( 1b ) sao = salicylaldoxime. The second, 0.55[Mn 4Cl 4(C 12H 9N 2O) 4(CH 3OH) 2(H 2O) 2]·0.45[Mn 4Cl 4(C 12H 9N 2O) 4(CH 3OH) 4] ( 2 ), is the first reported case of a {Mn II4} core of this topology besides known {Mn III4} compounds. Differences between the {Mn II4} and {Mn III4} situation are discussed, and so far overlooked differences in magnetic properties between different {Mn III4} compounds are pointed out. 相似文献
5.
Four linear trinuclear transition metal complexes have been prepared and characterized. The complexes [M II(MeOH) 4][Fe III(L) 2] 2·2MeOH (M = Fe (1) or Ni (2)), [Co II(EtOH) 2(H 2O) 2][Fe III(L) 2] 2·2EtOH (3), and [Mn II(phen) 2][Mn III(L) 2] 2·4MeOH (4) (H 2L = ((2-carboxyphenyl)azo)-benzaldoxime, phen = 1,10-phenanthroline) possesses a similar syn– anti carboxylate-bridged structure. The terminal Fe(III) or Mn(III) ions are low spin, and the central M(II) ions are high spin. Magnetic measurements show that antiferromagnetic interactions were present between the adjacent metal ions via the syn– anti carboxylate bridges. The antiferromagnetic coupling between low-spin Fe(III) and Ni(II) is unusual, which has been tentatively assigned to the structural distortion of Fe(III). 相似文献
6.
A new type of naphthoxime‐based ligand, 1‐(1‐hydroxynaphthalen‐2‐yl)ethanone oxime (naphthsaoH 2, 1a ), is introduced into the chemistry of manganese(III) complexes. First triangular [Mn 3] compound with this ligand is presented: [Mn 3O(naphthsao) 3(CH 3OH) 5(CH 2ClCOO)] ( 1 ). Also preliminary structural studies for [Mn 3O(naphthsao) 3(CH 3OH) 5(CH 3COO)] ( A ) and 0.52[Mn 3O(naphthsao) 3(CH 3OH) 5(H 2O)] · 0.48[Mn 3O(naphthsao) 3(CH 3OH) 6] ( B ) are mentioned. Compound 1 was characterized by X‐ray diffraction studies and by a preliminary investigation of the magnetic properties, showing antiferromagnetic coupling of the Mn III ions. Compound 1 displays a supramolecular motif of hydrogen‐bonded chains. 相似文献
7.
A homometallic lanthanide tetranuclear cluster, namely [Yb 4(pdmH) 2(pdm) 4 (PhCO 2) 2(PhCO 2H) 2(H 2O) 2] · PhCO 2H · 0.25MeOH ( 1 ) (pdmH 2 = pyridine‐2,6‐dimethanol) was prepared and structurally characterized. Single‐crystal X‐ray analysis revealed that complex 1 has a tetranuclear core with a zigzag arrangement. Magnetic properties of complex 1 were also investigated. 相似文献
8.
The mixed valence manganese(II/IV) complex, [Mn IIL 2(MeOH) 2]·[Mn IVL 2(OAc) 2]·2(MeOH) ( 1), and the chloride-bridged 1D polymeric manganese(III) complex, [Mn IIIL 2(μ-Cl)] n ( 2), where L is the deprotonated form of 2-ethoxy-6-[(2-phenylaminoethylimino)methyl]phenol (HL), have been prepared and structurally
characterized by single-crystal X-ray diffraction analysis and IR spectra. The Mn atoms in both complexes are octahedrally
coordinated. The self-assembly of the complex structures is apparently directed by the anions of the manganese salts. 相似文献
9.
Reactions of 2,4-dihydroxyacetophenone oxime with manganese salts yielded two manganese crowns, [Mn 3( μ 3-O)(4-OH-Me-sao) 3(HCOO)(MeOH) 5]·MeOH ( 1) and [Mn 3( μ 3-O)(4-OH-Me-sao) 3(CH 3COO)(MeOH) 5]·MeOH ( 2) (4-OH-Me-saoH 2=2,4-dihydroxyacetophenone oxime). Both compounds possess [Mn III 3( μ 3-O)] 7+ cores which contain 9-MC-3 metallacrown (MC) rings with the repeating pattern [–Mn–N–O–]. However, the difference in the structures of both compounds is coordinated carboxylates. In 1 and 2, the MC molecules are connected with each other through intermolecular hydrogen bonds, generating similar 3-D supramolecular networks. Magnetic properties reveal that in 1 and 2 the metal ions exhibit ferromagnetic exchange coupling. 相似文献
10.
A tetranuclear manganese complex [Mn 4(HL) 4(MeOH) 4(SCN) 2]·3MeOH (1) and a one-dimensional assembly of [Mn 4] units, [Mn 4(HL) 4(MeOH) 4(N(CN) 2) 2]·2.5MeOH (2) (H 3L = 2,6-bis(hydroxymethyl)-4-methylphenol), have been synthesized and studied. Complexes 1 and 2 crystallize in the triclinic
space group P
$
\bar 1
$
\bar 1
and monoclinic space group P21/n, respectively. Complex 1 possesses a mixed-valence tetranuclear dicubane unit, which comprises
two Mn II and two Mn III ions. Complex 2 is built from the similar tetranuclear [Mn 4] units connected through two N(CN) 2− anions into a 1-D chain. The temperature dependence of the magnetic susceptibilities of 1 and 2 indicates ferromagnetic interactions
between the manganese ions. Frequency-dependent out-of-phase signals of alternating current magnetic susceptibilities are
observed in the low temperature range for both complexes, indicating a slow magnetic relaxation. 相似文献
11.
The trinuclear manganese(II) complexes [Mn 3(L 1) 2( μ‐OAc) 4]·2Et 2O {HL 1 = (1‐hydroxy‐4‐nitrobenzyl)((2‐pyridyl)methyl)((1‐methylimidazol‐2‐yl)methyl)amine} ( 1·2EtOH ), [Mn 3(L 2) 2( μ‐OAc) 4] {HL 2 = ((1‐methylimidazol‐2‐yl)methyl)(1‐hydroxybenzyl)amine} ( 2 ) and [Mn 3(L 3) 2( μ‐OAc) 6] {L 3 = bis(1‐methylimidazol‐2‐yl)methanone} ( 3 ) were synthesized. The compounds were characterized by X‐ray crystallography, mass spectrometry, IR, UV‐vis spectroscopy, and elemental analysis. The manganese atoms in 1 and 2 are bridged by phenol moieties of the ligands and acetates. In 3 they are only bridged by acetates in a mono‐ and bi‐dentate way. The resulting Mn···Mn distances are 3.233(1) Å ( 1 ), 3.364(1) Å ( 2 ) and 3.643(7) Å ( 3 ). In the present compounds different limiting cases for the phenomenon of the carboxylate shift are realized. Besides symmetric mono‐ and bi‐dentate bridging an unusual intermediate is also observed. 1·2EtOH is the first example of a trinuclear model for the OEC that shows catalase activity. Furthermore it was characterized by temperature dependent magnetic susceptibility measurements and a total spin ground state of S t = 5/2 was found. The results for 1 reveals antiferromagnetic coupling between the central and the terminal manganese ions, with J = ?1.2 cm ?1, g = 2.00 (fixed), χ TIP = 150×10 ?6 cm 3mol ?1. 相似文献
12.
Reaction of 2,2′-bipyridine (2,2′-bipy) or 1,10-phenantroline (phen) with [Mn(Piv) 2(EtOH)] n led to the formation of binuclear complexes [Mn 2(Piv) 4L 2] (L = 2,2′-bipy (1), phen (2); Piv − is the anion of pivalic acid). Oxidation of 1 or 2 by air oxygen resulted in the formation of tetranuclear Mn II/III complexes [Mn 4O 2(Piv) 6L 2] (L = 2,2′-bipy (3), phen (4)). The hexanuclear complex [Mn 6(OH) 2(Piv) 10(pym) 4] (5) was formed in the reaction of [Mn(Piv) 2(EtOH)] n with pyrimidine (pym), while oxidation of 5 produced the coordination polymer [Mn 6O 2(Piv) 10(pym) 2] n (6). Use of pyrazine (pz) instead of pyrimidine led to the 2D-coordination polymer [Mn 4(OH)(Piv) 7(µ 2-pz) 2] n (7). Interaction of [Mn(Piv) 2(EtOH)] n with FeCl 3 resulted in the formation of the hexanuclear complex [Mn II4Fe III2O 2(Piv) 10(MeCN) 2(HPiv) 2] (8). The reactions of [MnFe 2O(OAc) 6(H 2O) 3] with 4,4′-bipyridine (4,4′-bipy) or trans-1,2-(4-pyridyl)ethylene (bpe) led to the formation of 1D-polymers [MnFe 2O(OAc) 6L 2] n·2 nDMF, where L = 4,4′-bipy (9·2DMF), bpe (10·2DMF) and [MnFe 2O(OAc) 6(bpe)(DMF)] n·3.5 nDMF (11·3.5DMF). All complexes were characterized by single-crystal X-ray diffraction. Desolvation of 11·3.5DMF led to a collapse of the porous crystal lattice that was confirmed by PXRD and N 2 sorption measurements, while alcohol adsorption led to porous structure restoration. Weak antiferromagnetic exchange was found in the case of binuclear Mn II complexes ( JMn-Mn = −1.03 cm −1 for 1 and 2). According to magnetic data analysis ( JMn-Mn = −(2.69 ÷ 0.42) cm −1) and DFT calculations ( JMn-Mn = −(6.9 ÷ 0.9) cm −1) weak antiferromagnetic coupling between Mn II ions also occurred in the tetranuclear {Mn 4(OH)(Piv) 7} unit of the 2D polymer 7. In contrast, strong antiferromagnetic coupling was found in oxo-bridged trinuclear fragment {MnFe 2O(OAc) 6} in 11·3.5DMF ( JFe-Fe = −57.8 cm −1, JFe-Mn = −20.12 cm −1). 相似文献
13.
The reaction of Cd(NO3)2 · 4H2O and Eu(NO3)3 · 6H2O or Tb(NO3)3 · 6H2O with potassium 3,5-di-tert-butylbenzoate (Kbzo) and N-donor ligands (1,10-phenanthroline (phen), 2,4-lutidine (2,4-lut), 3,4-lutidine (3,4-lut), phenanthridine (phtd), 2,3-cyclododecenopyridine (cdpy), acridine (acr)) afforded heterometallic LnCd2 complexes: [EuCd2(bzo)7(EtOH)2(phen)] (2), [LnCd2(bzo)7(2,4-lut)4] (Ln = Eu (3), Tb (4)), [EuCd2(bzo)7(H2O)2(2,4-lut)2] · MeCN (5), [EuCd2(NO3)(bzo)6(EtOH)2(2,4-lut)2] (6), [EuCd2(bzo)7(H2O)(EtOH)(3,4-lut)2] · 5EtOH (7), 3[EuCd2(bzo)7(H2O)2(phtd)2] · 4phtd (8), [EuCd2(bzo)7(EtOH)3(cdpy)] (9), 2[EuCd2-(bzo)2(EtOH)4] · acr (10). The structures of complexes 2, 3, and 5–10 were determined by single-crystal X-ray diffraction. The isostructurality of complexes 3 and 4 was confirmed by powder X-ray diffraction. The structure of the trinuclear {Ln2Cd} metal core is stable and independent of the type of peripheral ligands coordinated to cadmium atoms. Photoluminescent properties of compounds 3 and 4 were studied. 相似文献
14.
Hydrothermal reactions of lanthanide chloride, phosphonoacetic acid (H 2O 3PCH 2COOH), and water in the presence of HCl provide a series of lanthanide coordination polymers. FT-IR spectra confirm that there are three kinds of structures among seven complexes, {[Ln 2(O 3PCH 2CO 2) 2(H 2O) 3]?·?H 2O} ∞ (type I) (Ln?=?La III for 1; Pr III for 2; Nd III for 3 and Eu III for 4), [Ln(O 3PCH 2CO 2)(H 2O) 2] ∞ (type II) (Ln?=?Tb III for 5), and [Ln(O 3PCH 2CO 2)(H 2O) 2] ∞ (type III) (Ln?=?Ho III for 6 and Yb III for 7). Complexes 1– 5 show 2-D 4,4,5,5-connected (4 4?·?6 2)(4 5?·?6)(4 6?·?6 4)(4 8?·?6 2) topology networks and 2-D 4-connected (4 4?·?6 2) topology networks and then are further linked into 3-D supramolecular networks by hydrogen-bonding interactions; 6 and 7 both exhibit a 3-D 4-connected (4 2?·?6 3?·?8) topology with 1-D dumbbell-shaped channels. The results indicate infrared spectroscopy is in accord with the result of single-crystal X-ray analysis. 相似文献
15.
On the basis of triangular-shaped secondary building units, a hexanuclear manganese(III) complex, [Mn III6O 2(sao) 6(N 3) 2(H 2O) 8]·2.5H 2O ( 1) (H 2sao = salicylaldoxime), was synthesized and structurally characterized. The structure of 1 consists of two triangular-shaped [Mn 3O] connected with end-to-end (EE) azide group. Magnetic data analysis shows that antiferromagnetic couplings dominated in the complex. 相似文献
16.
Ten new complexes, [Cu 2(L 1)(NO 3) 2]·2H 2O ( 1), [Cu 4(L 1) 2]·4ClO 4·H 2O ( 2), [Cu 2(L 1)(H 2O) 2]·(adipate) ( 3), [Cu 6(L 1) 2( m-bdc) 4]·2DMF·5H 2O ( 4), [Cu 2(L 1)(Hbtc)]·5H 2O ( 5), [Cu 2(L 1)(H 2O) 2]·(ntc)·3H 2O ( 6), [Co 2(L 2)]·[Co(MeOH) 4(H 2O) 2] ( 7), [Co 3(L 2)(EtOH)(H 2O)] ( 8), [Ni 6(L 2) 2(H 2O) 4]·H 2O ( 9) and [Zn 4(L 2)(OAc) 2]·0.5H 2O ( 10), have been synthesized. 1 displays a [Cu 2(L 1)(NO 3) 2] monomolecular structure. 2 shows a supramolecular chain including [Cu 2L 1] 2+. In 3, two Cu(II) ions are connected by L 1 to form a [Cu 2(L 1)(H 2O) 2] 2+ cation. In 4, the m-bdc anions bridge Cu(II) ions and L 1 anions to form a layer. Both 5 and 6 display 3-D supramolecular structures. 7 consists of both [Co 2L 2] 2? and [Co(MeOH) 4(H 2O) 2] 2+ units. 8 and 9 show infinite chain structures. In 10, Zn(II) dimers are linked by L 2 to generate a 3-D framework. The magnetic properties for 4 and 8 and the luminescent property for 10 have been studied. 相似文献
17.
The synthesis, crystal structure, and magnetic properties of a new hexanuclear manganese(III) complex are reported. The complex [LiMn 6(L) 6]OH · 2MeCN · 4MeOH · 1.5H 2O (LiH 2L = lithium 2‐{[bis(2‐hydroxyethyl)amino]methyl}‐4‐methylphenate) ( 1 ), was obtained from the reaction of one equivalent of LiH 2L with Mn(OAc) 2 in MeCN/MeOH (v:v/1:1). Single‐crystal X‐ray diffraction shows that six octahedrally coordinated manganese(III) ions define a ring and are linked by twelve bridging oxygen atoms from alkoxo groups. The resulting [Mn 6(OCH 2) 12] skeleton has the remarkable property of acting as a host for a octahedrally coordinated lithium ion in the center of the ring. Variable‐temperature solid‐state magnetic susceptibility studies of 1 in the temperature range 2.0–300 K reveal that the complex has a S = 12 ground state spin, showing ferromagnetic exchange interactions between the constituent manganese(III) ions. 相似文献
18.
The syntheses and structures of five new Mn 3+ clusters [Mn 26O 17(OH) 8(OMe) 4F 10(Bta) 22(MeOH) 14(H 2O) 2] ( 1), [Mn 10O 6(OH) 2(Bta) 8(py) 8F 8] ( 2), {NHEt 3} 2[Mn 3O(Bta) 6F 3] ( 3), [Mn 8O 4(OMe) 2(Me 2Bta) 6F 8(Me 2BtaH)(MeOH) 8] ( 4), and [Mn 13O 12(Me 2Bta) 12F 6(MeOH) 10(H 2O) 2] ( 5), are reported, thereby demonstrating the utility of MnF 3 as a new synthon in Mn cluster chemistry. 相似文献
19.
Mono-and dinuclear Re IV and Re V complexes with 3,5-dimethylpyrazole (Me 2pzH) were synthesized. The cis-[Re 2O 3Cl 4(3,5-Me 2pzH) 4] complex ( cis- 1) was prepared by the reaction of NH 4ReO 4 with K[HB(Me 2pz) 3] in concentrated HCl or by refluxing of [ReCl 3(MeCN)(PPh 3) 2] with Me 2pzH in air. The bromide complex trans-[Re 2O 3Br 4(3,5-Me 2pzH) 4] ( trans- 2) was synthesized by passing dry HBr through a solution of [Re 2O 3Br 2(μ-3,5-Me 2pz) 2(3,5-Me 2pzH) 2] ( 4) in chloroform. The pyrazolate-bridged complex [Re 2O 3Cl 2(μ-3,5-Me 2pz) 2(3,5-Me 2pzH) 2] ( 3) was prepared from (Et 4N) 2[ReOCl 5] or Cs 2[ReOCl 5] and Me 2pzH. The corresponding bromide and iodide complexes [Re 2O 3X 2(3,5-Me 2pz) 2(3,5-Me 2pzH) 2] · C 6H 6 (X = Br ( 4) or I ( 5)) were synthesized by the reactions of (NH 4) 2[ReBr 6] or K 2[ReI 6], respectively, with Me 2pzH. The [ReO(OMe)(3,5-Me 2pzH) 4]Br 2 · · 3,5-Me 2pzH · 4H 2O complex ( 6) was obtained as a by-product in the synthesis of complex 4. The reaction of [ReNCl 2(PPh 3) 2] with Me 2pzH was accompanied by hydrolytic denitration giving rise to the mixed-ligand complex [Re 2O 3Cl 2(μ-3,5-Me 2pz) 2(3,5-Me 2pzH)(PPh 3)] ( 7). The reaction of (NH 4) 2[ReBr 6] with a Me 2pzH melt gave the trans-[ReBr 4(3,5-Me 2pzH) 2] · · Me 2CO complex ( 8). The structures of complexes 2 and 4–8 were established by X-ray diffraction. All compounds were characterized by elemental analysis, electronic absorption spectroscopy,
1H NMR and IR spectroscopy, mass spectrometry, and cyclic voltammetry.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 1, pp. 52–59, January, 2006. 相似文献
20.
New bi- and trihomonuclear Mn(II), Co(II), Ni(II), and Zn(II) complexes with sulfa-guanidine Schiff bases have been synthesized for potential chemotherapeutic use. The complexes are characterized using elemental and thermal (TGA) analyses, mass spectra (MS), molar conductance, IR, 1H-NMR, UV-Vis, and electron spin resonance (ESR) spectra as well as magnetic moment measurements. The low molar conductance values denote non-electrolytes. The thermal behavior of these chelates shows that the hydrated complexes lose water of hydration in the first step followed by loss of coordinated water followed immediately by decomposition of the anions and ligands in subsequent steps. IR and 1H-NMR data reveal that ligands are coordinated to the metal ions by two or three bidentate centers via the enol form of the carbonyl C=O group, enolic sulfonamide S(O)OH, and the nitrogen of azomethine. The UV-Vis and ESR spectra as well as magnetic moment data reveal that formation of octahedral [Mn 2L 1(AcO) 2(H 2O) 6] ( 1), [Co 2(L 1) 2(H 2O) 8] ( 2), [Ni 2L 1(AcO) 2(H 2O) 6] ( 3), [Mn 3L 2(AcO) 3(H 2O) 9] ( 5), [Co 3L 2(AcO) 3(H 2O) 9] · 4H 2O ( 6), [Ni 3L 2(AcO) 3(H 2O) 9] · 7H 2O ( 7), [Mn 3L 3(AcO) 3(H 2O) 6] ( 9), [Co 2(HL 3) 2(H 2O) 8] · 4H 2O ( 10), [Ni 3L 3(AcO) 3(H 2O) 9] ( 11), [Mn 3L 4(AcO) 3(H 2O) 9] · H 2O ( 13), [Co 2(HL 4) 2(H 2O) 8] · 5H 2O ( 14), and [Ni 3L 4(AcO) 3(H 2O) 9] ( 15) while [Zn 2L 1(AcO) 2(H 2O) 2] ( 4), [Zn 3L 2(AcO) 3(H 2O) 3] · 2H 2O ( 8), [Zn 3L 3(AcO) 3(H 2O) 3] · 3H 2O ( 12), and [Zn 3L 4(AcO) 3(H 2O) 3] · 2H 2O ( 16) are tetrahedral. The electron spray ionization (ESI) MS of the complexes showed isotope ion peaks of [M] + and fragments supporting the formulation. 相似文献
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