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1.
Dan-Qi Zhang Li Song Jin-Tao Wu Yu-Fan Zhu Wen-Ze Xu Jia-Qi Lai Wen-Xiang Chai 《Acta Crystallographica. Section C, Structural Chemistry》2023,79(5):186-192
Luminescent cuprous complexes are an important class of coordination compounds due to their relative abundance, low cost and ability to display excellent luminescence. The title heteroleptic cuprous complex, [2,2′-bis(diphenylphosphanyl)-1,1′-binaphthyl-κ2P,P′](2-phenylpyridine-κN)copper(I) hexafluoridophosphate, rac-[Cu(C44H32P2)(C11H9N)]PF6, conventionally abbreviated rac-[Cu(BINAP)(2-PhPy)]PF6 ( I ), where BINAP and 2-PhPy represent 2,2′-bis(diphenylphosphanyl)-1,1′-binaphthyl and 2-phenylpyridine, respectively, is described. In this complex, the asymmetric unit consists of a hexafluoridophosphate anion and a heteroleptic cuprous complex cation, in which the cuprous centre in a CuP2N coordination triangle is coordinated by two P atoms from the BINAP ligand and by one N atom from the 2-PhPy ligand. Time-dependent density functional theory (TD–DFT) calculations show that the UV–Vis absorption of I should be attributed to ligand-to-ligand charge transfer (LLCT) characteristic excited states. It was also found that the paper-based film of this complex exhibited obvious luminescence light-up sensing for pyridine. 相似文献
2.
G. Von Poelhsitz B. L. Rodrigues A. A. Batista 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(9):m424-m427
The crystal structures of [1,3‐bis(diphenylphosphino)ethane‐κ2P,P′](pyridine‐2‐sulfinato‐κ2N,S)(pyridine‐2‐thiolato‐κ2N,S)ruthenium(II), [Ru(C5H4NO2S)0.33(C5H4NS)1.67(C26H24P2)] or [Ru(pySO2)1−x(pyS)1+x(dppe)] (x = 0.67), (I), and [1,3‐bis(diphenylphosphino)propane‐κ2P,P′](pyridine‐2‐sulfinato‐κ2N,S)(pyridine‐2‐thiolato‐κ2N,S)ruthenium(II), [Ru(C5H4NO2S)0.355(C5H4NS)1.645(C27H26P2)] or [Ru(pySO2)1−x(pyS)1+x(dppp)] (x = 0.645), (II), are composed of neutral distorted octahedral RuII complexes with chelating pyridine‐2‐thiolate, pyridine‐2‐sulfinate and biphosphine ligands. The S atoms are trans to each other, while pairs of P and N atoms are in cis positions. Partial double‐bond character is observed for C—S. The crystal packing consists of monolayers stabilized by C—H⋯O and C—H⋯S interactions, and is affected by the alkyl‐chain lengths. 相似文献
3.
Markus Wieber Elmar Schmidt 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3-4):223-228
Abstract Diphenyltelluriumbis(alkylxanthates) as well as telluracyclopentane-1,1-bis(alkylxanthates) of the general formula R2Te(S2COR')2 and C4H8Te(S2COR′)2 (R = C6H5 and R′ = CH3, C2H5, i-C3H7) are obtained by reaction of diphenyltellurium-dichloride or telluracyclopentane-1,-diiodide with sodium-xanthates. The insertion of CS2 into the corresponding organotelluriumbis-alkoxydes is only successful in the case of the cyclic compound. Diphenyltelluriumbis-alkoxydes react with decomposition. This decomposition in substance and in solution is investigated. Man erhält Diphenyltellurbis(alkylxanthogenate), sowie Telluracyclopentan-1,1-bis(alkylxanthogenate) der Formel R2Te(S2COR′)2 bzw. C4H8Te(S2COR′)2 mit R = C6H5, R′ = CH3, C2H5, i-C3H7, durch Umsetzung von Diphenyltellurdichlorid bzw. Telluracyclopentan-1,1-diiodid mit den entsprechenden Natriumxanthogenaten. Prinzipiell führt auch die Einschiebung von CS2 in Telluracyclopentan-1,1-bisalkoholate zu den entsprechenden Xanthogenatverbindungen. Bei der Umsetzung von CS2 mit Diphenyltellurbis(alkoholaten) konnten nur die, für diese Xanthogenatverbindungen charakteristischen Zersetzungsprodukte isoliert werden. In diesem Zusammenhang wurde die thermische und solvensabhängige Zersetzung untersucht. 相似文献
4.
Andrew J. Bilbo Clay M. Sharts 《Journal of polymer science. Part A, Polymer chemistry》1967,5(11):2891-2898
Polymers [N(PN)4(C6H5)6N?P(C6H5)2(CH2)4P(C6H5)2]x and [N(PN)4(C6H5)6N?P–(C6H5)2C6H4C6H4P(C6H5)2]x have been formed by thermal copolymerization of trans-2,6-diazidohexaphenylcyclophosphonitrile [N3(PN)4(C6H5)6N3] with either 1,4-bis-(diphenylphosphino)butane [(C6H5)2P(CH2)4P(C6H5)2] or 4,4′-bis(diphenylphosphino)-biphenyl [(C6H5)2C6H4C6H4P(C6H5)2]. The maximum molecular weights obtained were about 10,000. A polymer endcapped with triphenyl phosphine was stable to 400°C. 相似文献
5.
Haozhe Yang Simone Budow Henning Eickmeier Hans Reuter Frank Seela 《Acta Crystallographica. Section C, Structural Chemistry》2013,69(8):892-895
The title compound [systematic name: 1‐(2‐deoxy‐β‐D‐erythro‐pentofuranosyl)‐4‐nitro‐1H‐pyrrolo[2,3‐b]pyridine], C12H13N3O5, forms an intramolecular hydrogen bond between the pyridine N atom as acceptor and the 5′‐hydroxy group of the sugar residue as donor. Consequently, the N‐glycosylic bond exhibits a syn conformation, with a χ torsion angle of 61.6 (2)°, and the pentofuranosyl residue adopts a C2′‐endo envelope conformation (2E, S‐type), with P = 162.1 (1)° and τm = 36.2 (1)°. The orientation of the exocyclic C4′—C5′ bond is +sc (gauche, gauche), with a torsion angle γ = 49.1 (2)°. The title nucleoside forms an ordered and stacked three‐dimensional network. The pyrrole ring of one layer faces the pyridine ring of an adjacent layer. Additionally, intermolecular O—H...O and C—H...O hydrogen bonds stabilize the crystal structure. 相似文献
6.
J. Weiss 《无机化学与普通化学杂志》1986,542(11):137-143
Metal Sulfur Nitrogen Compounds. 20. Reaction Products of PdCl2 and Pd(CN)2 with S7NH. Preparation and Structure of the Complexes [Ph6P2N][Pd(S3N)(S5)] and X[Pd(S3N)(CN)2] X = [Me4N]+, [Ph4P]+ With PdCl2 and [Ph6P2N]OH S7NH forms the complex salt [Ph6P2N][Pd(S3N)(S5)], which could be isolated in two modifications (α- and β-form). The α-form is triclinic, a = 9.347(4), b = 14.410(8), c = 15.440(11) Å, α = 76.27°(5), β = 77.06°(4), γ = 76.61α(4), Z = 2, space group P1 . The β-form is orthorhombic, a = 9.333(2), b = 17.659(4), c = 23.950(6) Å, Z = 4. The structure of the metal complex is the same in the two modifications. One S3N? and one S52? are coordinate as chelate ligands to Pd. From S7NH, Pd(CN)2, and XOH X = [(CH3)4N]+ and [(C6H5)4P]+ the salts X[Pd(S3N)(CN)2] were formed. The (CH3)4N-salt is isomorphous with the analogous Ni compound described earlier, the (C6H5)4P-salt is triclinic, a = 9.372(4), b = 10.202(5), c = 13.638(6) Å, α = 86.36α(4), β = 85.66°(4), γ = 88.71°(4), Z = 2, space group P1 . One S3N? chelate ligand and two CN? ions are bound to Pd. In all these complexes the coordination of Pd is nearly square planar. 相似文献
7.
Wojciech Nitek Ewa Szymańska Waldemar Tejchman Ewa Żesławska 《Acta Crystallographica. Section C, Structural Chemistry》2023,79(9):334-343
5-Arylidene derivatives of rhodanine show various biological activities. The new crystal structures of five derivatives investigated towards ABCB1 efflux pump modulation are reported, namely, 2-[5-([1,1′-biphenyl]-4-ylmethylidene]-4-oxo-2-thioxothiazolidin-3-yl)acetic acid dimethyl sulfoxide monosolvate, C18H13NO3S2·C2H6OS ( 1 ), 4-[5-([1,1′-biphenyl]-4-ylmethylidene]-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid, C20H17NO3S2 ( 2 ), 5-[4-(benzyloxy)benzylidene]-2-thioxothiazolidin-4-one, C17H13NO2S2 ( 3 ), 4-{5-[4-(benzyloxy)benzylidene]-4-oxo-2-thioxothiazolidin-3-yl}butanoic acid, C21H19NO4S2 ( 4 ), and 5-[4-(diphenylamino)benzylidene]-2-thioxothiazolidin-4-one, C22H16N2OS2 ( 5 ). Compounds 1 and 3 – 5 crystallize in the triclinic space group P, while 2 crystallizes in the monoclinic space group P21/n, where the biphenyl moiety is observed in two positions (A and B). Two molecules are present in the asymmetric unit of 5 and, for the other four compounds, there is only one molecule; moreover, 1 crystallizes with one dimethyl sulfoxide molecule. The packing of the molecules containing a carboxyl group ( 1 , 2 and 4 ) is determined by O—H…O hydrogen bonds, while in the other two compounds ( 3 and 5 ), the packing is determined by N—H…O hydrogen bonds. Additionally, induced-fit docking studies have been performed for the active compounds to investigate their putative binding mode inside the human glycoprotein P (P-gp) binding pocket. 相似文献
8.
Juan Carlos Rodriguez-Ubis Rosa Sedano Gemma Barroso Olga Juanes Ernesto Brunet 《Helvetica chimica acta》1997,80(1):86-96
The synthesis of three novel pyrazole-containing complexing acids, N,N,N′,N′-{2, 6-bis[3-(aminomethyl)pyrazol-1-yl]-4-methoxypyridine}tetrakis(acetic acid)( 1 ), N,N,N′,N′-{2, 6-bis[3-(aminomethyl)pyrazol-1-yl]pyrazine}-tetrakis(acetic acid) ( 2 ), and N,N,N′,N′-{6, 6′-bis[3-(aminomethyl)pyrazol-1-yl]-2, 2′-bipyridine}tetrakis(acetic acid) ( 3 ) is described. Ligands 1–3 formed stable complexes with EuIII, TbIII, SmIII, and DyIII in H2O whose relative luminescence yields, triplet-state energies, and emission decay lifetimes were measured. The number of H2O molecules in the first coordination sphere of the lanthanide ion were also determined. Comparison of data from the EuIII and TbIII complexes of 1–3 and those of the parent trisheterocycle N,N,N′,N′-{2, 6-bis[3-(aminomethyl)pyrazol-l-yl]pyridine}tetrakis(acetic acid) showed that the modification of the pyridine ring for pyrazine or 2, 2′-bipyridine strongly modify the luminescence properties of the complexes. MeO Substitution at C(4) of 1 maintain the excellent properties described for the parent compound and give an additional functional group that will serve for attaching the label to biomolecules in bioaffinity applications. 相似文献
9.
Dimerization reactions of diphenyldiazomethane have been applied to the polycondensation of six bisdiazobenzyl arylenes, namely 1,4- and 1,3-bis(α-diazobenzyl)-benzenes C6H5CN2? (C6H4)? CN2C6H5; 1,4- and 1,3-bis(α-diazo-p-methoxybenzyl)-benzenes, p,p′-MeO? C6H4? CN2? (C6H4)? CN2C6H4? OMe; 4,4′-bis(α-diazobenzyl)-diphenylmethane, C6H5CN2? (C6H4CH2C6H4)? CN2C6H5; and 4,4′-bis(α-diazobenyl)-diphenyl ether, C6H5CN2? (C6H4? O? C6H4)CN2C6H5. Depending on the nature of the catalysts, polyene-arylenes (? C(Ar)?C(Ar)? C6H4)n, and polyazine-arylenes, (? C(Ar)?N? N? C(Ar)? C6H4? )n, can be obtained selectively by acid-catalyzed decomposition of these bisdiazoalkanes at room temperature. With perchloric acid and with arylsulfonic acids in strong polar media, polyene-arylenes are formed. On the other hand, boron trifluoride and arylsulfonic acids in solvents of low dielectric constant afford polyazine-arylenes. Less selective is the thermal decomposition at 75°C in toluene solution; it gives a polymer containing about 90% azine and 10% olefinic groups. All these polymers are soluble in common solvents. Their molecular weight vary from 3 200 to 5 000, i.e., X?n from 12 to 20. The polyene-arylenes are very stable and decompose only around 500°C; the polyazine-arylenes are less stable and decompose around 370°C by losing nitrogen. 相似文献
10.
Andrew Bond William Jones 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(4):436-437
The title compound, [Mg(C5H4NOS)2(H2O)2]·C10H8N2O2S2, is a two‐component host–guest material. The 2,2′‐dithiobis(pyridine N‐oxide) molecule has crystallographic twofold symmetry. The metal complex lies on an inversion centre and associates via C—H?S interactions into chains which thread the 2,2′‐dithiobis(pyridine N‐oxide) lattice in perpendicular directions. Hydrogen bonds exist between the water molecules of the diaquamagnesium units and the N—O groups of the host lattice. 相似文献
11.
Andy B. Whitehill M. George Michael L. Gross 《Journal of the American Society for Mass Spectrometry》1996,7(7):628-638
The determination of gas-phase reactivity of a series of polycyclic aromatic hydrocarbons (PAHs) with nucleophiles is directed at achieving isomer differentiation through ion-molecule reactions and collisionally activated decomposition spectra. A series of PAH isomers form gas-phase [adduci — H]+ ions with the reagent nucleophiles pyridine and N-methylimidazole. Collisionally activated decomposition spectra of the [adduct — H]+ ions of the pyridine/PAH systems are dominated by products formed by losses of C5H4N, C5H5N (presumably neutral pyridine), and C5H6N. Collisional activation of PAH/N-methylimidazole [adduct — H]+ ions causes analogous losses of C4H5N2, C4H6N2 (presumably neutral N-methylimidazole), and C4H7N2. The relative abundances of the ions that result from these losses are highly isomer specific for N-methylimidazole but less so for pyridine. Furthermore, PAH/N-methylimidazole [adduct — H]+ ions undergo a series of metastableion decompositions that also provide highly isomer-specific information. The C4H7N2 (from PAH/N-methylimidazole product ions) and C5H6N (from PAH/pyridine product ions) losses tend to increase with the ΔH f of the PAH radical cation. In addition, it is shown that the fragmentation patterns of these gas-phase PAH/nucleophile adducts are similar to fragmentation patterns of PAH/nucleoside adducts generated in solution, which suggests that the structures of products formed in gas-phase reactions are similar to those produced in solution. 相似文献
12.
trans‐Diaquabis(5‐carboxy‐1H‐imidazole‐4‐carboxylato‐κ2N3,O4)cobalt(II) 4,4′‐bipyridine solvate
Rong Cao Yu‐Ling Wang Wen‐Hua Bi 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):m609-m611
In the title compound, [Co(C5H3N2O4)2(H2O)2]·C10H8N2, the Co atom is trans‐coordinated by two pairs of N and O atoms from two monoanionic 4,5‐dicarboxyimidazole ligands, and by two O atoms from two coordinated water molecules, in a distorted octahedral geometry. The 4,4′‐bipyridine solvent molecule is not involved in coordination but is linked by an N—H⋯N hydrogen bond to the neutral [Co(C5H3N2O4)2(H2O)2] molecule. Both molecules are located on inversion centers. The crystal packing is stabilized by N—H⋯N and O—H⋯O hydrogen bonds, which produce a three‐dimensional hydrogen‐bonded network. Offset π–π stacking interactions between the pyridine rings of adjacent 4,4′‐bipyridine molecules were observed, with a face‐to‐face distance of 3.345 (1) Å. 相似文献
13.
Chun‐Shan Zhou Li‐Li Ding Hang Zhang Min‐Na Cao Xiang‐Gao Meng 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(2):o51-o53
The two title compounds of 2,2′‐biimidazole (Bim) with 5‐sulfosalicylic acid (5‐H2SSA) and 2,2′‐bibenzimidazole (Bbim) with 5‐H2SSA are 1:2 organic salts, viz. C6H8N42+·2C7H5O6S−, (I), and C14H12N42+·2C7H5O6S−·3H2O, (II). The cation of compound (I) lies on a centre of inversion, whereas that of (II) lies on a twofold axis. Whilst compound (I) is anhydrous, three water molecules are incorporated into the crystal structure of (II). The substitution of imidazole H atoms by other chemical groups may favour the incorporation of water molecules into the crystal structure. In both compounds, the component cations and anions adopt a homogeneous arrangement, forming alternating cation and anion layers which run parallel to the (001) plane in (I) and to the (100) plane in (II). By a combination of N—H...O, O—H...O and C—H...O hydrogen bonds, the ions in both compounds are linked into three‐dimensional networks. In addition, π–π interactions are observed between symmetry‐related benzene rings of Bbim2+ cations in (II). 相似文献
14.
Abstract The reaction of P4S10with PSCL3 in pyridine leads to Py.PS2Cl (1). This substance yields by the reaction with hexamethyldiailazane in molar ratio 1:l a new subatance that was identified as pyridiniwn salt of 2,4-dimercapto-2,4-dithioxo-1,3-bis(trimethylsilyl)-1,3-diaza-2λ5,4λ5-diphosphetidine (PYH)2/S2P(NSiMe3)2PS2/ (I). (2). 相似文献
15.
Lithioamidines &;{;R′N(Li)C(R)NR′; R = H, CH3, C6H5; R′ = C6H5, -CH3C6H4&;}; react with anhydrous copper(II) chloride to form [Cu&;{;R′NC(R)NR′&;};2]n complexes, and with anhydrous copper(I) chloride to form [Cu&;{;R′NC(R)NR′&;};]m. The copper(II) complexes are diamagnetic, purple solids, which are air stable in the solid state but very air reactive in solution. Experimental data are consistent with a dimeric or more highly associated structure, and an X-ray structural determination shows [Cu&;{;C6H5NC(C6H5)NC6H5&;};2]2 to be dimeric with four bridging amidino-groups and a short CuCu distance (2.46Å). The copper(I) complexes are pale yellow solids, which in solution are subject to rapid aerial oxidation, especially in the presence of free amidines, and disproportionation to [Cu&;{;R′NC(R)HR′&;};2]n and copper metal. Differences in properties are noted between acetamidino-, benzamidino- and formamidino-complexes, the last complexes of copper(I) being most stable towards disproportionation. Cu&;{;C6H5NC(CH3)NC6H5&;};2 reacts with pyridine (Py) to form the copper(I) derivative Cu&;{;C6H5NC(CH3)NC6H5&;};. 2Py and with carbon disulphide to form Cu&;{;C6H5NC(CH3)NC6H5&;};2.CS2 which is reduced to form Cu&;{;C6H5NC(CH3)NC6H5&;};.CS3. 相似文献
16.
Cyclometallated complexes of the type cis-bis(2-phenylpyridine)platinum(II) (C22H16N2Pt) and cis-bis(2-(2′-thienyl)pyridine)platinum(II) (C18H12N2S2Pt) undergo thermal or photochemical oxidative addition (TOA or POA) reactions with a number of substrates. TOA (with CH3I, CH3CH2I etc.) yield mixtures of several isomers which rearrange slowly (within ca. one week at room temperature) to one of the possible cis-isomers. CH2Cl2, CHCl3, or (E)? ClCH?CHCl, e.g., do not react thermally. POA yield directly complexes of Pt(IV) with the halide and a σ-bonded C-atom in cis-position. The configuration, as assigned by extensive use of 1H-NMR data, can be characterized for the two chelating ligands C …? N and C′ …? N′ by C,C′-cis; N,N′-cis and C(chelate), Cl-trans. 相似文献
17.
Two stereoisomeric pentacyclic oxindole alkaloids from Uncaria tomentosa: uncarine C and uncarine E
Ilias Muhammad Ikhlas A. Khan Nikolaus H. Fischer Frank R. Fronczek 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(4):480-482
The chloroform solvate of uncarine C (pteropodine), (1′S,3R,4′aS,5′aS,10′aS)‐1,2,5′,5′a,7′,8′,10′,10′a‐octahydro‐1′‐methyl‐2‐oxospiro[3H‐indole‐3,6′(4′aH)‐[1H]pyrano[3,4‐f]indolizine]‐4′‐carboxylic acid methyl ester, C21H24N2O4·CHCl3, has an absolute configuration with the spiro C atom in the R configuration. Its epimer at the spiro C atom, uncarine E (isopteropodine), (1′S,3S,4′aS,5′aS,10′aS)‐1,2,5′,5′a,7′,8′,10′,10′a‐octahydro‐1′‐methyl‐2‐oxospiro[3H‐indole‐3,6′(4′aH)‐[1H]pyrano[3,4‐f]indolizine]‐4′‐carboxylic acid methyl ester, C21H24N2O4, has Z′ = 3, with no solvent. Both form intermolecular hydrogen bonds involving only the oxindole, with N?O distances in the range 2.759 (4)–2.894 (5) Å. 相似文献
18.
Graeme E. Riley Charles F.H. Tipper Richard J. Puddephatt 《Journal of organometallic chemistry》1981,208(3):429-436
The reaction between the platinacyclobutanes [H2)L2] (X Cl, Br; L C5H5N, 4-CH3C5H4N; R, R′ H, CH3; R H, R′ CH3, C6H5) and iodide and thiocyanate ions in methyl cyanide solution has been studied. The C3 moiety is eliminated as the cyclopropane and the process is first order with respect to the platinacyclobutanes and zero to half order with respect to the salt (MY). With the iodides the rate increases in the order Li < Na < K, Et4N, and methyl substitution in the cyclobutane ring reduces the rate of reaction with Et4NI. Added pyridine retards the reaction when L C5H5N (X Cl; R, R′ H) and added dimethylsulphoxide accelerates it.The mechanism suggested involves dissociation of an L ligand and attack of Y? ions and of M+Y? ion pairs on the five-coordinate intermediate formed. 相似文献
19.
20.
《Journal of Coordination Chemistry》2012,65(17):1489-1498
Reactions of dinuclear tetrakis(pyridine-2-thiolato)dipalladium(II) or platinum(II), M2(C5H4NS)4, with divalent metal halides in organic solvents formed compounds of stoichiometry: [M2(C5H4NS)4·(M′X2)2] {M = Pd, M′X2 = HgCl2 (1), PtCl2 (2), CdCl2 (3); M = Pt, M′X2 = HgCl2 (4)}. Similarly, bis(1-oxopyridine-2-thione)-palladium(II)/platinum(II) formed compounds: [M(C5H4NOS)2·M′X2] {M = Pd, M′X2 = HgCl2 (5), HgBr2 (6), HgI2 (7), CdCl2 (8), PtCl2 (9); M = Pt, M′X2 = HgBr2 (10), HgI2, (11)}. Compounds 1–11 have been characterized using elemental analysis, IR, far-IR, and NMR (1H, 13C) spectroscopy. Coordination to metal centers of M′X2 occurs via coordinated sulfur. Possible structures are suggested. The crystallization of (5) in dimethyl sulfoxide formed crystals of Pd(C5H4NOS)2 as revealed by X-ray crystallography. 相似文献