13462-88-9Relevant articles and documents
Coordination compounds of nickel(II) salts with substituted pyridines. Complexes of 2-, 3-, and 4-methylpyridine
Vallarino,Hill,Quagliano
, p. 1598 - 1604 (1965)
Complexes of 2-, 3-, and 4-methylpyridine (2-pic, 3-pic, and 4-pic) with a number of Ni(II) salts (chloride, bromide, iodide, nitrate, perchlorate, and tetrafluoroborate) were prepared and investigated. Three series of complexes were obtained, Ni(pic)X2 (pic = 2-pic, 3-pic; X = Cl, Br); Ni(pic)2X2 (pic = 2-pic, 3-pic, 4-pic; X = Cl, Br, I, NO3); Ni(pic)4X2 (pic = 3-pic, 4-pic; X = Cl, Br, I, NO3, ClO4, BF4). The complex Ni(3-pic)4X2 (X = ClO4, BF4) was obtained in two isomeric forms, identified as [Ni(3-pic)4X2] and [Ni(3-pic)4]X2, respectively. The complexes of 4-aminopyridine, Ni(4-NH2py)4X2 (X = Cl, Br, I, ClO4), were also prepared and investigated. The stoichiometry and stereochemistry of the complexes were correlated with the properties of the anion and ligand, in particular with the basicity and steric requirements of the latter.
Crocket, D. S.,Haendler, H. M.
, (1961)
Hosokawa,T.,Moritani,I.
, p. 959 - 960 (1970)
Mond, L.,Langer, C.,Quincke, F.
, p. 749 - 753 (1890)
Liptay, G.,Wadsten, T.,Borbely-Kuszmann, A.
, p. 93 - 98 (1990)
The magnetic properties of NiBr2
Tsubokawa, Ichiro
, p. 2109 - 2109 (1960)
-
Gutmann, V.,Utvary, K.
, (1959)
Wilkinson, G.
, p. 5501 - 5502 (1951)
Dam, J. C. Van,Hakvoort, G.,Reedijk, J.
, p. 3 - 16 (1981)
Schoonemaker, R. C.,Friedman, A. H.,Porter, R. F.
, p. 1586 - 1589 (1959)
Preparation, characterisation and thermal behaviour of N-(3-aminopropyl)-1,3-propanediamine complexes of nickel(II) in the solid state
Pariya, Chandi,Ghosh, Ashutosh,Chaudhuri, Nirmalendu Ray
, p. 199 - 210 (1995)
The complexes [Ni(dpt)2]X2.nH2O (where dpt is N-(3-aminopropyl)1,3-propanediamine; n = 0 when X is I, NCS or ClO4; n = 1 when X is Cl, Br or NO3; n = .mchgt. 1 when X is 0.5SO4 and 0.5SeO4), Ni(dpt)X2.nH2O (n = 0 when X is Cl or NO3; n = 1 when X is Br or
Corey et al.
, p. 2417 (1968)
Insight into the mechanism of thermal stability of α-diimine nickel complex in catalyzing ethylene polymerization
Zhu, Liang,Zang, Dandan,Wang, Yi,Guo, Yintian,Jiang, Baiyu,He, Feng,Fu, Zhisheng,Fan, Zhiqiang,Hickner, Michael A.,Liu, Zi-Kui,Chen, Long-Qing
, p. 1196 - 1203 (2017)
The union of experimental and computational methods can accelerate the development of polymerization catalysts for industrial applications. Herein, we report complementary experimental and computational studies of the thermal stability of α-diimine nickel complexes by using thermally stable Cat. 1 and a typical Brookhart catalyst (B-Cat) as models. Experimentally, we found that many more nickel atoms could be activated for Cat. 1 at elevated temperature during the ethylene polymerization process compared to those for B-Cat. Computationally, first-principle calculations showed that the decomposition energies of Cat. 1 were found to be higher than those of B-Cat, contributing to the activation observed for Cat. 1. We found that the presence of ethydene evidently affected the conformation of C1-N1-Ni-N2-C2 five-membered ring (where the nickel center is located) of Cat. 1, turning the envelope conformation (B-Cat) into a half-chair conformation (Cat. 1). According to calculations, the decomposition energy of the latter was 17.4 kJ/mol higher than that of the former. These results provide information to elucidate the mechanism of thermal stability of α-diimine nickel catalyst and significantly advance the development of thermally stable α-diimine nickel catalysts used in industry.
Polymer complexes. LIV. Structural and spectral studies of supramolecular coordination polymers built from Ni(II), Fe(II) and Pd(II) with sulphadrug
El-Sonbati,Belal,Diab,Mohamed
, p. 26 - 31 (2011/04/23)
Polymer complexes of p-acrylamidyl sulphaguanidine (HL) with Ni(II), Fe(II) and Pd(II) salts have been prepared. The structures of the polymer complexes were elucidated using elemental analysis, 1H NMR, UV-Vis, IR spectroscopies, magnetic moment, molar conductance and thermal analysis. The polymer complexes were isolated in 1:1 and 1:2 (M:L) ratios. The solid monocomplexes (1:1) (M:L) were isolated in the general formula [Fe(HL)O 2SO2(OH2)2]. The biscomplexes (1:2) (M:L) solid chelates found to have the general formula [Ni(HL)2X 2]n (X = Cl-, Br-, I-, NO3, NCS- ), [Fe(HL)(en)(OSO3)(OH 2)]n and [Ni(HL)2(Py)2] nX2, while {[Pd(L)X]2}n (1:1) (X = Cl- or Br-). In all the polymer complexes the ligand and anions were found to be coordinated to the Ni(II) and Fe(II) ions. The bidentate nature of the ligand is evident from IR spectra. The magnetic and spectroscopic data indicate a octahedral geometry for complexes. The thermal behaviour of these chelates shows that the hydrated complexes loss water molecules of hydration in the first step followed immediately by decomposition of the anions and ligand molecules in the subsequent steps.
