SYNTHESIS AND CHARACTERIZATION OF METAL COMPLEXES DERIVED FROM POTASSIUM 3－（BENZOTRIAZOLE1－CARBONYLMETHYL）－DITHIOCARBAZATE

ＳＹＮＴＨＥＳＩＳＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＭＥＴＡＬＣＯＭＰＬＥＸＥＳＤＥＲＩＶＥＤＦＲＯＭＰＯＴＡＳＳＩＵＭ３－（ＢＥＮＺＯＴＲＩＡＺＯＬＥ１－ＣＡＲＢＯＮＹＬＭＥＴＨＹＬ）－ＤＩＴＨＩＯＣＡＲＢＡＺＡＴＥ￥ＰｅｎｇＦｅｉＸＵ（Ｄ...     

PRELIMINARY STUDIES ON THE SYNTHESIS AND CHARACTERIZATION OF OXY-AND THIO-DIACETIC ACID HYDRAZITION AND THEIR FIRST-ROW TRANSITION METAL COMPLEXES

It has been made certain that thio-and oxy-diacetic acid hydrazidesare potential anticancer compounds.However,their ability to formcomplexes with transition metals and the properties of the complexes thusformed have not been studied.Employing a new potential anticancer ligand1,2-bis(thioacetic acid hydrazide)ethane prepared in our lab,along withligands oxydiacetic hydrazide and 1,2-bis(oxyacetic acid hydrazide)ethane,a series of 11 new first-row transition metal(M=Zn~(2+),Cu~(2+),Co~(2+),Ni~(2+))complexes with each of the above three ligands have been synthesizedand characterized by means of elemental analyses,IR,TG and X-raypowder diffraction.     

SYNTHESIS AND CHARACTERIZATION OF COMPLEXES OF TRANSITION METAL WITH PBDETA, A NEW POLYDENTATE LIGAND

The synthesis and characterization are reported for a series of bi- and trinuclear complexes of the first transition metal ions with PBDETA, the newly syn thesized polydentate ligand. The electron transition energy in binuclear compound is stronger than that in trinuclear. There is a weak antiferromagnetic exchange interaction in tricopper and trimanganese.     

SYNTHESIS,CHARACTERIZATION AND BIOLOGICAL ACTIVITY OF TRANSITION METAL COMPLEXES WITH 5-HYDROXY-7, 4''''-DIMETHOXYFLAVONE

Complexes of Cu~Ⅱ, Ni~Ⅱ, Co~Ⅱ, Zn~Ⅱ, Fe~Ⅲ, Cr~Ⅲ, Cd~Ⅱ and Mn~Ⅱ with the natural product 5-hydroxy-7,4′-dimethoxyflavone(1) have been prepared and their probable structures were proposed on the basis of elemental analyses, thermal analyses and IR and UV spectral data. The ligand and all the complexes were tested in vitro for their antibacterial activity.     

ELECTRONIC CONFIGURATIONS OF TRANSITION METAL SANDWICH COMPLEXES

In this paper the electronic configurations of n+1-decker transition metal sandwich com-plexes have been generally discussed by means of the structural rule of transition metalheterocarborans and the numbers of their valence bonding orbitals have been obtained as fol-lows: VBO = 6n + 3-6n + 5,which are not dependent on the properties of transition metal atoms and coordination rings.Then the results of EHMO quantum chemistry calculations of the model skeletons and cor-responding analyses on electronic configurations of actual molecules for double-, triple- andtetra-decker sandwich complexes have been discussed to verify the above formula.     

THE SYNTHESIS AND CHARACTERIZATION OF ANSYMMETRIC PENTAAZADENTATE PORPHYRIN-LIKE METAL COMPLEXES

This paper presents the synthesis and structural characterization of asymmetrictripyrrane-containing macrocycle.This macrocycle could be oxidized to the methinebridged,22 π-electron aromatic macrocyclic complexes containing cadmium(Ⅱ),samarium(Ⅲ),europium(Ⅲ)and gadolinium(Ⅲ)by treating with corresponding metal chloride inthe presence of air Their structures were characterized by spectral methods.     

FORMYLFERROCENE 5－NORBORNENE－2－CARBOXYLICHYDRAZONE AND ITS TRANSITION METAL（I） COMPLEXES

ＦＯＲＭＹＬＦＥＲＲＯＣＥＮＥ ５－ＮＯＲＢＯＲＮＥＮＥ－２－ＣＡＲＢＯＸＹＬＩＣＨＹＤＲＡＺＯＮＥ ＡＮＤ ＩＴＳ ＴＲＡＮＳＩＴＩＯＮ ＭＥＴＡＬ（Ｉ） ＣＯＭＰＬＥＸＥＳ￥ＱｉｕｇＢａｏＳＯＮＧ；ＹｏｎｇＸｉａｎｇＭＡ；ＸｉａｏＬｉＷＵ；Ｙｏｎ...     

CHARACTERIZATION OF SOME SCHIFF BASES OF HETEROCYCLIC COMPOUNDS AND THEIR TRANSITION METAL COMPLEXES

Some new Schiff bases were synthesized by the condensation ofequimolar quantities of salicylaldehyde and 2-amino-5-phenylazo-pyridine orits derivatives in dry benzene(1):Metal complexes of the type ML_2and M'L_3where M=Cu~(2+),Co~(2+),Ni~(2+),Mn~(2+)Pd~(2+),M'=Fe~(3+)and L=different newly synthesizedmonobasic Schiff bases were prepared in absolute ethanolic medium(2)andcharacterized by elementary analysis,conductance measurements,infraredspectra,electronic spectra,magnetic moments studies.     

STUDIES ON OLEFIN-COORDINATING TRANSITION METAL CARBENE COMPLEXES (Ⅺ)——SYNTHESIS, SPECTRA AND CRYSTAL STRUCTURE OF NEW TYPE OF ISOMERIZED PRODUCTS OF CYCLOHEXADIENE-(DICARBONYL) [ETHOXY(ARYL)CARBENE]IRON COMPLEXES

Reaction of 1,3-cyclohexadiene(tricarbonyl)iron I with aryllithium, ArLi (Ar=C_6H_(53)-m-, p-CH_3C_6H_4, p-CH_3OC_6H_4, p-CF_3C_6H_4), in ether at low temperature, followed by subsequent alkylstion of the acylmetalates formed with Et_3OBF_4 in aqueous solution at 0°G gave 5 crystalline compounds with the compositions of C_6H_8(CO)_2FeC(OC_2H_5)Ar Ⅱ—Ⅵ formulated as isomerized products of cyclohexadiene(dicarbonyl)[ethoxy(aryl)earbene]iron complexes based on elemental analyses, spectral studies and single crystal X-ray structure determination. The results from syntheses, spectroscopic experiments and X-ray diffraction are reported, and a possible reaction mechanism is tentatively proposed in this paper.     

THE NON－TEMPLATE SYNTHESIS OF MACROCYCLIC SCHIFF BASE DERIVED FROM THIOPHENE，AND ITS Ag（Ⅰ），Hg（Ⅱ） COMPLEXES

ＴＨＥ　ＮＯＮ－ＴＥＭＰＬＡＴＥ　ＳＹＮＴＨＥＳＩＳ　ＯＦ　ＭＡＣＲＯＣＹＣＬＩＣ　ＳＣＨＩＦＦ　ＢＡＳＥ　ＤＥＲＩＶＥＤ　ＦＲＯＭ　ＴＨＩＯＰＨＥＮＥ，ＡＮＤ　ＩＴＳ　Ａｇ（Ⅰ），Ｈｇ（Ⅱ）　ＣＯＭＰＬＥＸＥＳＴＨＥＮＯＮ－ＴＥＭＰＬＡＴＥＳＹＮＴ...     

SYNTHESIS AND CHARACTERIZATION OF RARE EARTH METAL COMPLEXES WITH PIPERONAL ISONICOTINOYL HYDRAZONE

Complexes of La(Ⅲ),Nd(Ⅲ),Sm(Ⅲ),Eu(Ⅲ),Gd(Ⅲ),Dy(Ⅲ),Er(Ⅲ),Yb(Ⅲ)and Y(Ⅲ)with piperonal isonicotinoyl hydrazone(HPIN)have been synthesized in DMF and EtOH.The complexes have been characte-rized by elemental analysis,molar conductance,i.r.,UV and~1H n.m.r.spectra,magnetic measurements,X-ray powder diffraction and DTA.     

STUDY ON SYNTHESIS AND RELAXIVITY OF PARAMAGNETIC POLYESTER METAL COMPLEXES FOR MRI

ＳＴＵＤＹＯＮＳＹＮＴＨＥＳＩＳＡＮＤＲＥＬＡＸＩＶＩＴＹＯＦＰＡＲＡＭＡＧＮＥＴＩＣＰＯＬＹＥＳＴＥＲＭＥＴＡＬＣＯＭＰＬＥＸＥＳＦＯＲＭＲＩＯｕｙａｎｇｍｉｎｇ；ＺｈｕｏＲｅｎｘｉ；ＦｕＧｏｎｇｃｈｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒ...     

COMPLEXES OF RARE EARTH NITRATE WITH SCHIFF BASE DERIVED FROM VANILLIN AND P-TOLUIDINE

In this paper,complexes of rare earth nitrate with Schiffbase derived from vanillin(3-methoxy-4-hydroxy-benzaldehyde)andp-toluidine[LnL_2(NO_3)_2]NO_3(Ln=La-Eu except Pm,L=Schiff base ligand)have been prepared and characterized.     

STUDIES OF THE HOMOLOGATION OF METHANE ONSUPPORTED TRANSITION METAL CATALYSTS

Introduction0ncofthcintriguingpr0blcmsinhctcrogcncouscatal}'sisisthcactit'ationanddircctconversionofmcthancintoliquidfucIanduscful.h..i..l,lllMcthancactivationisvcry'difficultbccauscn1cthancisathcrmod}'namicalI}'stablccompoundt`ithanoblcgas-likcconfigurati0nThcvcry'strongtctrahcdralC-Hbonds(435kJ/mol)offcrnofiJnctionalgroups,magncticm0mcnts'orpolardistortionstofacilitatcchcmicalattackThismakcsmcthanelcssrcactivcthanncarl}'allitsconvcrsionproducts.Rccentl}'oxidativccouplinghasbecnconsidcrcda…     

SYNTHESIS AND CHARACTERISTICS OF HOMOBINUCLEAR MACROCYCLIC COMPLEXES OF RARE EARTH METAL ISOTHIOCYANATE AND PHENOLIC SCHIFF BASES

Eleven homobinuclear macrocyclic rare earth metal ions complexes are obtained as com-pounds of 2:2 Schiff base formed by condensing 2,6-diformyl-4-tert-Butylphenol and triethy-lenetetramine by a template procedure using rare earth metal isothiocyanates. These complexesare characterized by elemental analyses, FABMS, IR, conductivity and magnetic susceptibility.The variable-temperature magnetic susceptibility (4--300K) of complexes of Gd(Ⅲ) and Tb(Ⅲ) has been determined. A satisfactory fit to theoretical curve derived from spin Hamil-tonian operator was obtained by least squares method. The exchange interaction parameters areJ =-0.220 cm~(-1) for Gd, ,ZJ~?=-0.052 cm~(-1) for Tb. The results indicate a very weak anti-ferromagnetic interaction between Gd~(3+)-Gd~(3+), Tb~(3+)-Tb~(3+) ions.     

SYNTHESIS, SPECTRA AND ELECTROCHEMICAL PROPERTIES OF OXYGEN ADDUCTS OF TETRAKIS(2-ANILINOPYRIDINATO) DIRHODIUM COMPLEXES

Two oxygen adducts of different geometric isomers of the tetrakis(μ-2-anilinopyridinato) dirhodium unit, Rh_2(ap)_4~+, have been synthesized and characterized. Rh_2(ap)_4O_2(4,0) is the oxygen adduct 1 of 4, 0 isomer; and Rh_2(ap)_4O_2(2, 2) is the oxygen adduct 2 of 2, 2 isomer. The ESR spectra of both oxygen adducts show that there is a characteristic signal of a superoxide ion, g=2.03. The 4, 0 isomer with different axial ligands gives the order of A_Ⅱ values; O_2~-≈ClO_4~-相似文献   

SYNTHESIS OF POLYACETYLENE BY NOVEL CATALYSTS COMPOSED OF TRANSITION METAL 2-ETHYL HEXYL PHOSPHONATES AND ALUMINIUM TRIALKYLS

Polyacetylene is the most hopeful electrical conductive polymer, which is being exploited to fabricate plastic battery, solar energy cell etc. The catalysts used for the synthesis of high cis-polyacetylene films are mainly Ti(OC_4H_9)_4-AlEt_8 and rare-earth coordination catalysts as well as Co(NO_3)_2-NaBH_4. This paper reports features of acetylene polymerization by novel catalysts composed of transition metal 2-ethyl hexyl phosphonates of the fourth periodic transitional series-Ti, V, Cr, Mn, Fe, Co, Ni and aluminium trialkyls. Except Ni catalyst system, all catalytic systems can promote polymerization of acetylene at room temperature to form a silvery-grey polyacetylene film with rich cis-content and high crystallinity. Under the experimental conditions tested, the catalytic activity of various systems shows the following sequence: Fe>Ti～V>Cr>Mn>Co>Ni The polyacetylene films obtained were characterized.     

SYNTHESIS AND ELECTRONIC SPECTRA OF RUTNENIUM(Ⅱ)-1,1''''-BIISOQUINOLINE COMPLEXES

l,l'-biisoquinoline can coordinate with ruthenfum(Ⅱ) to form a new series of mononuclear complexes and the electronic absorption of these complexes were measured and reasonably assigned.     

SYNTHESIS AND CHARACTERIZATION OF THE COMPLEXES OF β－ALKOXYCARBONYLETHYLTIN TRICHLORIDES WITHDBSO AND HMPA

ＳＹＮＴＨＥＳＩＳＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＴＨＥＣＯＭＰＬＥＸＥＳＯＦβ－ＡＬＫＯＸＹＣＡＲＢＯＮＹＬＥＴＨＹＬＴＩＮＴＲＩＣＨＬＯＲＩＤＥＳ　ＷＩＴＨＤＢＳＯＡＮＤＨＭＰＡＬａｉＪｉｎＴＬＡＮ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓ...     

SYNTHESIS AND CHARACTERIZATION OF ZEROVALENT PALLADIUM COMPLEXES

A series of nine Pd(0)complexes(L)Pd(L')[L=bis(diphenylphosphino)methane(dppm),1,2-bis(diphenylphosphino)ethane(dppe),and 1,1'-bis(diphenyl-phosphino)ferrocene(dppf),respectively;L=dibenzylideneacetone(dba),2,3,5,6-tetrachloro-1.4-benzoquinone(q)and 2,3-dichloro-1,4-naphthoquinone(nq)]were synthesized and characterized by means of elemental analyses,IR,UV,1~H-NMR and~(31)P-NMR spectra.The redox wave peak potentials of the ferrocenylgroup of complexes with dppf were measured by using CV method.Results showedthat all the diphosphorus ligands behaved as chelating bidentate ligand anddba,q,nq were coordinated to the Pd(0)atom through their C=C moieties,nottheir carbonyl ones.Analytical data also showed that there were interactionsbetween the two different ligands in each complex.