Naslov
Polynuclear Complexes of Nickel(II) with N,N’-butylenebissalicylaldimine

Autori
Friščić, Tomislav ; Kaitner, Branko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
9th Slovenian-Croatian Crystallographic Meeting, Book of Abstracts and Programme / Leban, Ivan ; Lah, Nina - Ljubljana : Univerza v Ljubljani, 2000

Skup
9th Slovenian-Croatian Crystallographic Meeting

Mjesto i datum
Gozd Martuljek, Slovenija, 15.06.2000. - 17.06.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Polynuclear nickel(II) complexes; X-ray structure determination

Sažetak
Although tetradentate Schiff base transition metal complexes with either N,N'-ethylenebissalicylaldimine or N,N'-propylenebissalicylaldimine have been thoroughly investigated, less attention has been given to complexes with Schiff bases containing longer aliphatic bridging chains. Two complexes of nickel(II) with N,N'-butylene-bissalicylaldimine, (methanol)bis(N,N'-butylenebissalicylaldiminato)dinickel(II)meth-anol (1/2) (1) and triethylammonium tris(nitrato)bis(N,N'-butylenebissalicylaldiminato)-trinickelate(II) (2), have been structurally characterized. Crystal data: (1) C_39H_48N_4Ni_2O_7, M_r = 802.07, Monoclinic, Space group P 2_1/n (No 14.), Z = 4, a = 13.493(1) A, b = 19.433(2) A, c = 14.812(1) A, b = 93.558(8) ^o, V = 3876.5(6) A^3, R = 0.077, wR = 0.130. (2) [(C_2H_5)_3NH][C_36H_36N_7Ni_3O_13], M_r = 1052.94, Monoclinic, Space group P 2_1/n (No 14.), Z = 4, a = 13.335(2) A, b = 25.310(3) A, c = 13.764(2) A, b = 96.177(1) ^o, V = 4618(1) A^3, R = 0.046, wR = 0.058. The assymetric unit of (1) contains a dimeric bis(N,N'-butylenebissalicyl-aldimine)dinickel(II) molecule and three methanol molecules one of which is coordinatively bonded to the octahedrally surrounded nickel atom. Remaining methanol molecules are hydrogen bonded to the chelate ligand oxygen atoms of the complex molecule. Surprisingly, other nickel atom coordination is trigonal bipyramidal. The main structural feature of (2) is the core built up of three edge sharing distorted octahedra having metal atoms coordinated either with N_2O_4 (terminal polyhedra) or O_6 donor atom set (central octahedron).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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