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81.
Jia-Sheng Zhang 《Journal of organometallic chemistry》2009,694(13):2069-7062
The 16-electron half-sandwich complexes Cp∗Rh[E2C2(B10H10)] (E = S, 1a; Se, 1b) react with [Ru(COD)Cl2]x under different conditions to give different types of heterometallic complexes. When the reactions were carried out in THF for 24 h, the binuclear Rh/Ru complexes [Cp∗Rh(μ-Cl)2(COD)Ru][E2C2(B10H10)] (E = S, 2a; Se, 2b) bridged by two Cl atoms and the binuclear Rh/Rh complexes (Cp∗Rh)2[E2C2(B10H10)] (E = S, 3a; Se, 3b) with direct Rh-Rh bond can be isolated in moderate yields. [Ru(COD)Cl2] fragments in 2a and 2b have inserted into the Rh-E bond. If the [Ru(COD)Cl2]x was reacted with 1a in the presence of K2CO3 in methanol solution, the product [Cp∗Rh(COD)]Ru[S2C2(B10H10]] (4a), K[(μ-Cl)(μ-OCH3)Ru(COD)]4 (5a) and 3a were obtained. The B(3)-H activation in complex 4a was found. However, when the reaction between 1b and [Ru(COD)Cl2]x was carried out in excessive NaHCO3, the carborane cage opened products {Cp∗Rh[S2C2(B9H10)]}Ru(COD) (6b), {Cp∗Rh[S2C2(B9H9)]}Ru(COD)(OCH3) (7b) and 3b were obtained. All complexes were fully characterized by their IR, 1H NMR and elemental analyses. The molecular structures of 2a, 2b, 3b, 4a, 5a, and 7b have been determined by X-ray crystallography. 相似文献
82.
Qing‐Yang Lian Chun‐De Huang Rong‐Hua Zeng Dr. Yong‐Cai Qiu Ji‐Xia Mou Hong Deng Matthias Zeller Dr. 《无机化学与普通化学杂志》2009,635(2):393-398
Two new 4d‐4f coordination polymers, [Ag2Nd(nic)4(H2O)4·(ClO4)·H2O] ( 1 ) and [Ag8Yb4(inic)8(ox)6]· [Ag2(inic)2] ( 2 ) [nic = nicotinate, inic = isonicotinate and ox = oxalate] have been synthesized and characterized by element analysis, IR spectroscopy and thermal analysis, as well as single crystal X‐ray diffraction. Complex 1 exhibits a wavelike layer that is assembled from neodymium‐carboxylate subunits, silver centres and perchlorate ions. Complex 2 represents a extended heterometallic sandwich‐like layered network that is constructed from ytterbium‐oxalate layers and Ag(inic) chains. 相似文献
83.
Two new 3D heterometallic frameworks, [Me2NH2][CaCd2(BTC)(HBTC)2] · 4H2O ( 1 ) and [Ba11Co2(BTC)8(μ3‐OH)2(μ2‐H2O)6(H2O)16] ( 2 ) (H3BTC = 1,3,5‐benzenetricarboxylic acid, Me2NH2 = protonated dimethylamine), were synthesized using solvothermal and hydrothermal techniques, respectively. Complex 1 features a 3D microporous framework; it contains hourglass‐like trinuclear [CaCd2(COO)6] clusters that are bridged by –COO– groups and form zigzag chains. These chains are further interlinked by the –COO– groups of BTC3– ligands into 2D layers with interesting flower‐like configuration, which, in turn, are connected by HBTC2– ligands to afford the 3D structure. Me2NH2+ cations not only balance the negative charges of the host framework but also play template roles to fill in the channels, further consolidating the whole framework. The complicated 3D network of complex 2 is constructed by the interconnection of 2D layers, which, in turn, are made of the infinite inorganic chains based on hexanuclear [Ba6] clusters, and these 1D chains are decorated by {CoO6} octahedrons. Interestingly, the 2D layer can be viewed as a unique structure composed of two different kinds of heart‐shaped rings, which partially overlapped in apical positions to produce a ten‐membered ring window. Moreover, the luminescence properties of 1 – 2 and the gas adsorption property of 1 have also been studied. 相似文献
84.
《印度化学会志》2022,99(3):100363
Two new Cu(II)–Zn(II) complexes as a discrete hexanuclear cluster [{(CuL1)2Zn}2(μ1,5-N(CN)2)2](ClO4)2 (1) and a two dimensional (2D) coordination polymer [(CuL2)2Zn(μ1,5-N(CN)2)2]n (2) have been isolated by mixing two similar tetradentate Schiff bases H2L1 (N,N′-bis(ɑ-ethylsalicylidene)-1,3-propanediamine) and H2L2 (N,N′-bis(salicylidene)-1,3-pentanediamine) separately with Cu(ClO4)2·6H2O, Zn(ClO4)2·6H2O and NaN(CN)2 ?at same reaction condition. The heterometallic complexes have been structurally characterized by single crystal X-ray analyses showing that both are formed by angular trinuclear nodes and μ1,5-dicyanamide spacers. The trinuclear nodes ([(CuL1)2Zn]2+ in 1 and [(CuL2)2Zn]2+ in 2 are produced in situ from their corresponding reactants. The two Schiff base ligands coordinating the Cu(II) ions through the N2O2 donor set are additionally bonded to a Zn(II) ion with the four phenoxido oxygen atoms that act as bridging atoms. The zinc ion completes its coordination geometry with two terminal nitrogen atoms of two different dicyanamide spacers. The orientation of spacers from zinc ion are convergent in 1 whereas divergent in 2. Thus, two [(CuL1)2Zn]2+ nodes are interconnected by double μ1,5-dicyanamide bridges via Zn(II) centres to form discrete hexanuclear assembly of complex 1. On the other hand, [(CuL2)2Zn]2+ nodes in 2 are joined by μl,5-dicyanamide that bridge Zn(II) to Cu(II) centres of symmetry related units in order to construct a 2D coordination polymer. Consequently, the final coordination environment around Zn(II) is octahedral in both complexes whereas that around Cu(II) are square planar and square pyramidal in 1 and 2 respectively. 相似文献
85.
Yong Leng Kelvin Tan 《Journal of organometallic chemistry》2007,692(4):768-773
The heteronuclear cluster RuOs3(μ-H)2(CO)13 (1) reacts with indene under thermal activation to afford the novel clusters RuOs3(μ-H)(CO)9(μ-CO)2(η5-C9H7) (3), RuOs3(μ-H)(CO)9(μ3,η5:η2:η2-C9H7) (4) and Ru2Os3(μ-H)(CO)11(μ3,η5:η2:η2-C9H7) (5), the latter two possessing indenyl ligands in the μ3,η5:η2:η2 bonding mode. Cluster 5 exists as a mixture of two isomers. The inter-relationship among the clusters has also been investigated. 相似文献
86.
Alla B. Antonova Zoya A. Starikova Nina A. Deykhina Anatoly I. Rubaylo 《Journal of organometallic chemistry》2007,692(8):1641-1647
The crystal and molecular structure of the novel tetranuclear complex (η2-dppe)PdMn(μ3-CCHPh)PdMn(μ-CCHPh)(CO)4Cp2 (5) has been investigated. The metal core of 5 is a bent chain Pd(2)-Mn(2)-Pd(1)-Mn(1). The bond distances and angles are Mn(1)-Pd(1) 2.6025(6), Pd(1)-Mn(2) 2.8913(5), Mn(2)-Pd(2) 2.6463(4) Å, Mn(1)-Pd(1)-Mn(2) 140.2(2)°, Pd(1)-Mn(2)-Pd(2) 69.6(1)°. Complex contains two bridging vinylidene ligands coordinated to metal atoms in different ways. The CC bond lengths are 1.347(4) and 1.372(4) Å in the μ2(η1,η1)-CCHPh and μ3(η1,η1,η2)-CCHPh ligands, respectively. The η2-dppe ligand is coordinated to the Pd(2) atom to form the chelate cycle. Each of Mn(1) and Mn(2) atoms is bonded with the η5-C5H5 ring and two CO groups. 相似文献
87.
Tian-Xiang Lan Xia Zhang Chang-Neng Chen Hui-Sheng Wang Yu-Hua Fan 《Journal of Coordination Chemistry》2018,71(9):1415-1429
Two cerium complexes with and without manganese ion, [MnCe4(dipic)6(H2O)20][Ce(dipic)3]2·7H2O (dipic = dipicolinate) (1) and [Ce2(H2O)4(O2CMe)6][Ce(H2O)4(NO3)2(O2CMe)]2·2H2O·2MeOH (2), have been prepared, and their electrocatalytic reactivity for water oxidation has been investigated. Compound 1 is a heterometallic 3d-4f compound which possesses four Ce(IV) ions, two Ce(III) ions, and one Mn(II). Compound 2 is composed of three neutral parts, one of which is a dinuclear cerium molecule lying on an inversion center, and the other two are symmetric monomer units; the four cerium ions in 2 are all Ce(III). Electrochemical studies of 1 and 2 show that 1 can catalyze water oxidation at the potential ~1.5 V with an overpotential of ca. 900 mV versus NHE. Control potential electrolysis (CPE) experiments at 1.50 V of 1 displayed a stable current density of 2.5 mA/cm2, and the calculated Faradaic efficiency is 60%. However, no electrocatalytic reactivity was observed for 2. By comparison experiments, it was found that the electrocatalysis of 1 may result from the cooperative catalytic effect of the 4f cerium ion and 3d transition metal manganese ion. 相似文献
88.
Two 3d‐4f Heterometallic Coordination Polymers of Macrocyclic Oxamide with Benzotriazole‐5‐carboxylate Co‐ligand: Syntheses,Crystal Structures and Magnetic Properties 下载免费PDF全文
Two heterometallic 3d–4f coordination polymers, [Gd(CuL)2(Hbtca)(btca)(H2O)] · 2H2O ( 1 ) and [Er(CuL)2(Hbtca)(btca)(H2O)] · H2O · CH3OH ( 2 ) (CuL, H2L = 2,3‐dioxo‐5,6,14,15‐dibenzo‐1,4,8,12‐tetraazacyclo‐pentadeca‐7,13‐dien; H2btca = benzotriazole‐5‐carboxylic acid) were synthesized by solvothermal methods and characterized by single‐crystal X‐ray diffraction. Complexes 1 and 2 exhibit a double‐strand meso‐helical chain structures formed by [LnIIICuII2] (LnIII = Gd, Er) units by oxamide and benzotriazole‐5‐carboxylate bridges. They are isomorphic except that one free water molecule of 1 is replaced by a methanol molecule. All 1D chains are further interlinked by hydrogen bonds resulting in a 3D supramolecular architecture. The magnetic properties of the compound 1 and 2 are also discussed. 相似文献
89.
The Dihydridoiridium(III) Complex [IrH2Cl(P i Pr3)2] as a Molecular Building Block for Unsymmetrical Binuclear Rhodium–Iridium and Iridium–Iridium Compounds The title compound [IrH2Cl(PiPr3)2] ( 3 ) reacts with the chloro‐bridged dimers [RhCl(PiPr3)2]2 ( 1 ) and [IrCl(C8H14)(PiPr3)]2 ( 5 ) by cleavage of the Cl‐bridges to give the unsymmetrical binuclear complexes 4 and 6 with Rh(μ‐Cl)2Ir and Ir(μ‐Cl)2Ir as the central building block. The reactions of 3 with the bis(cyclooctene) and (1,5‐cyclooctadiene) compounds [MCl(C8H14)2]2 ( 7 , 8 ) and [MCl(η4‐C8H12)]2 ( 9 , 10 ) (M = Rh, Ir) occur analogously and afford the rhodium(I)‐iridium(III) and iridium(I)‐iridium(III) complexes 11 – 14 in 70–80% yield. Treatment of [(η4‐C8H12)M(μ‐Cl)2IrH2(PiPr3)2] ( 13 , 14 ) with phenylacetylene leads to the formation of the substitution products [(η4‐C8H12)M(μ‐Cl)2IrH(C≡CPh)(PiPr3)2] ( 15 , 16 ) without changing the central molecular core. Similarly, the compound [(η4‐C8H12)Rh(μ‐Br)2IrH(C≡CPh)(PiPr3)2] ( 18 ) has been prepared; it was characterized by X‐ray crystallography. 相似文献
90.