| | 1 | Author
| SvitlanaR. Petrusenkoa, Joachim Sielerb, VladimirN. Kokozay3 ' | Requires cookie* | | | Title
| Direct Synthesis of Zinc and Nickel(II) Complexes with l,4-Diazabicyclo[2.2.2]octane  | | | | Abstract
| The peculiarities of the formation of zinc and nickel(II) complexes by interaction of metal powder or metal oxide with ammonium salts (halides, nitrate, thiocyanate) were investigated in non-aqueous solutions (methanol, acetonitrile, N,N-dimethylformamide=DMF, dimethylsulf-oxide=DMSO) in presence of l,4-diazabicyclo[2.2.2]octane. The stoichiometry of the com plexes was found to depend on the initial reagent ratio Ni/ZnOiNfLX and Ni/ZnO:Ten. The compounds of compositions Z n(H Ten)(H 20)(N 03)3 and Ni(HTen)(Ten)Cb were character ized by X-ray crystallography. Both complexes contain five-coordinate metal atoms. The zinc compound possesses monomeric molecular structure whilst the nickel complex is polymeric. | | | |
Reference
| Z. Naturforsch. 52b, 331—336 (1997); received July 30 1996 | | | |
Published
| 1997 | | | |
Keywords
| Synthesis, Zinc, Nickel(II), Triethylenediamine, X-Ray | | | |
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| default:Reihe_B/52/ZNB-1997-52b-0331.pdf | | | | Identifier
| ZNB-1997-52b-0331 | | | | Volume
| 52 | |
| 2 | Author
| VladimirA. Ovchynnikov3, VladimirM. Amirkhanov3, AnatoliyA. Kapshuka, Tatyana Yu, Tadeusz Sliva2, Henryk Glowiakb, Kozlowskib | Requires cookie* | | | Title
| Synthesis, IR and X-Ray Studies of Tetra(N,N'-tetraethyl-N"-benzoyl- phosphorictriamide)-tetra(/x-3-methoxo)-tetra(methanol)tetra-NickeI(II) | | | | Abstract
| A new nickel(II) complex with N,N'-tetraethyl-N"-benzoylphosphortriamide (HL = C6H5C(0)N(H)P(0)(NEt2)2) of composition Ni4L4(OCH3)4-(HOCH;04 (1) has been synthe sized. The crystal and molecular structure of 1 has been determined from the X-Ray diffraction data (tetragonal, space group P42)C with a = 17.000(2) A, c = 15.338(3) A, Z = 2; R = 0.0399 for 1412 unique reflections). The structure is made up of cubane-like tetramers. In the corners of a cube there are 4 atoms of nickel and 4 atoms of oxygen of methoxy groups. The nickel atoms are characterized by a slightly distorted octahedral environment, which consists of three oxygen atoms of methoxy groups, carbonylic and phosphorylic oxygen atoms of the ligand L~, and an oxygen atom of a methanol molecule. The ligands L~ coordinate to the metal ion forming a chelate via the oxygen atoms of carbonylic and phosphorylic groups. | | | |
Reference
| Z. Naturforsch. 53b, 836—840 (1998); received February 23 1998 | | | |
Published
| 1998 | | | |
Keywords
| Nickel (II), Carbacylamidophosphates, X-Ray Data | | | |
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| 53 | |
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