1,721,063 research outputs found
Organometallic-pi-complexes of the f-Elements
No full textHandbook on the Physics and Chemistry of rare Earths, K.A. Gschneidner, Jr. and L. Eyring, Eds.
Synthesis and characterization of N,N'-diarylformamidido complexes of palladium(II)
No full textTrans-Pd(PPh3)2Cl2 reacts with Li(p-RC6H4N{A figure is presented}NC6H4R-p) (R = CH3O, CH3, H and Cl) in THF yielding the deeply colored complexes Pd(PPh3)2 (p-RC6H4NCH=NC6H4R-p)Cl (I), stable in the solid state. The main decomposition products in EtOH were identified when R = CH3, as trans-Pd(PPh3)2Cl2 and [Pd(p-CH3C6H4N{A figure is presented}NC6H4CH3-p)2]2(II). Dimeric complexes of type (II) can be synthesized also by reacting Li(p-CH3C6H4N{A figure is presented}NC6H4CH3-p) with Pd(NCCH3)2Cl2 in THF. The structures of all the new complexes are proposed on the basis of u. v., i.r. and n.m.r. data. © 1975
Crystal structure of bis(triphenylphosphine)chloro-1,3-di-p-tolyltriazenidopalladium(II)
No full textThe crystal and mol. structures of the title compd. were detd. by x-ray diffraction. The structure was solved by Patterson
methods and refined by least-squares calcns. to an R of 0.06. The crystals are triclinic, space group P1, with a
18.954(2), b 11.850(1), c 11.143(1) Å, 114.97(1), 94.75(1), and 97.51(1)°; d.(exptl.) = 1.36 and d.(calcd.) = 1.33 for
Z = 2. The compd. has square-planar coordination with the phosphine groups trans to each other and the triazenido
group acting as a monodentate ligand. The plane of the triazene N atoms contains the Pd atom. The interaction of the N
-electrons appears to be absent. A possible mechanism for the fluxional behavior of the mol. is suggested
The molecular and crystal structure of trans-hydridobis(triphenylphosphine)(1,3-di-p-tolyltriazenido)platinum(II)[PtH(PPh3)2(p-CH3C6H4NNNC6H4CH3-p)]
No full textThe structure of the title compd. was detd. at room temp. from 3-dimensional x-ray data collected by counter methods.\ud
The compd. crystd. in the triclinic space group P1 with a 14.649(2), b 15.082(2), c 10.929(1) Å, 110.99(5)°, \ud
102.40(5)°, 84.54(5)°, and Z = 2. Full-matrix least-squares treatment of 4673 obsd. intensities gave an unweighted R of\ud
0.069. The Pt atom has square-planar coordination with Pt-P(1) 2.268(5), Pt-P(2) 2.267(5), and Pt-N(1) 2.09(2) Å. The\ud
presence of the H atom is inferred from ir and 1H NMR data. The triazenido ligand, bonded to the metal through N(1),\ud
lies perpendicular to the coordination plane
Structure of cis-chlorobis(triphenylphosphine)-(1,3-di-p-tolyltriazenido)platinum(II)-chloroform, PtCl(PPh3)2(p-MeC6H4NNNC6H4Me-p).CHCl3
No full textThe structure of the title compd. was detd. at room temp. from 3-dimensional x-ray data collected by counter methods
and refined by least-squares techniques to a final R of 0.059 based on 3897 observations above background. The
compd. crystd. in the monoclinic space group P21/a with a 19.725(4), b 16.247(2), c 15.321(2) Å and 105.85(2)°, Z = 4.
The Pt atom has square-planar coordination with Pt-P(1) = 2.289(6), Pt-P(2) = 2.251(7), Pt-Cl = 2.353(7), and Pt-N(1) =
2.11(2) Å. The aryldiazene moiety lies in a plane roughly perpendicular to the coordination plane and its Ph groups are
twisted to relieve steric interactions with the adjacent phosphine Ph groups
A worldwide perspective on large carnivore attacks on humans
Full text linkVP was financially supported by the
Project PID2020-114181GB-I00 financed by the
Spanish Ministry of Science and Innovation, the
Agencia Estatal de Investigacioón (AEI), and the
Fondo Europeo de Desarrollo Regional (FEDER,
EU).Bombieri G., Penteriani V., Almasieh K., Ambarlı H., Ashrafzadeh M.R., Das C.S., Dharaiya N., Hoogesteijn R., Hoogesteijn A., Ikanda D., Jędrzejewski W., Kaboli M., Kirilyuk A., Jangid A.K., Sharma R.K., Kushnir H., Lamichhane B.R., Mohammadi A., Monroy-Vilchis O., Mukeka J.M., Nikolaev I., Ohrens O., Packer C., Pedrini P., Ratnayeke S., Seryodkin I., Sharp T., Palei H.S., Smith T., Subedi A., Tortato F., Yamazaki K., del Mar Delgado M
A novel synthesis and X-ray structure of a new aryldiazene complex: trans-(phenylacetylide)bis(triphenylphosphine)(p-fluorophenyldiazene)platinum(II) tetrafluoroborate
No full textThe title compound [Pt(CCPh)(HNNC6H4F-p)(PPh3)2](BF4) has been synthesized from Pt(HCCPh)(PPh3)2 and p-FC6H4N2BF4, and a mechanism for its formation is proposed; X-ray diffraction studies show that the acetylide ligand is σ-bonded and that the PCCC system is essentially linear, while the diazene ligand has a trans configuration around the NN bond, and the hydrogen-bearing nitrogen atom is coordinated to the platinum. © 1975
Qualità delle acque, Indice di Funzionalità di Risorgiva e segnalazioni faunistiche, nel Comune di Isola Vicentina (Provincia di Vicenza)
No full textBonding and fluxional behavior of N,N'-di-p-tolylformamidino and 1,3-di-p-tolyltriazenido complexes of palladium(II)and platinum(II)
No full textThe fluxionality of M(PPh3)2Cl(ArNXNAr) and trans-Pt(PPh3)2H(ArNNNAr) (M = Pd(II), Pt(II); Ar = p-MeC6H4; X = CH,\ud
N), is discussed on the basis of 1H NMR, x-ray, and ir studies. The stereochem. non-rigid process is proposed to occur\ud
via a pseudo-pentacoordinate intermediate having both N atoms facing the metal through 2 electron lone pairs. A\ud
different mechanism via a -bonding component in the M-(N ligand) bond is also discussed
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