Naslov
Monoaquabis(2, 2'-bipyridine)(saccharinato-N)zinc saccharinate. Crystal structure determination and spectra –structure correlations

Autori
Kaitner, Branko ; Grupče, Orhideja ; Jovanovski, Gligor

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

Izvornik
XVI. hrvatski skup kemičara i kemijskih inženjera : sažecu = XVIth Croatian Meeting of Chemists and Chemical Engineers : abstracts / Kurtanjek, Želimir ; Škare, Danko ; Meić, Zlatko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Hrvatsko kemijsko drustvo, 1999, 35-35

ISBN
953-96041-6-8

Skup
Hrvatski skup kemičara i kemijskih inženjera (16 ; 1999)

Mjesto i datum
Split, Hrvatska, 23.02.1999. - 26.02.1999

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Metal saccharinates; zinc(II) complexes; X-ray diffraction

Sažetak
In the course of our systematic investigation of structures of 2, 2'-bipyridine saccharinato complexes with various metals, the zinc complex was synthesized and studied by X-ray diffraction and FT IR spectroscopy. The crystal structure determination of the title compound revealed the formula [Zn(H_2O)(bpy)_2(sac)](sac). The compound crystallizes in the monoclinic system, space group P2_1/n, a = 7.7448(13), b = 31.524(6), c = 13.2793(20) A, b = 93.504(13)^o, R = 0.041, wR = 0.060. The structure is built up of [Zn(H_2O)(bpy)_2(sac)]^+ cations and [sac]^- anions. The central metal atom is octahedrally coordinated by four nitrogen atoms belonging to two 2, 2'-bipyridine molecules, one nitrogen atom from the coordinated saccharinate ligand and the water oxygen atom. The coordinated saccharinato ligand is hydrogen bonded (via its carbonyl oxygen) to the water molecule. The second saccharinate anion does not participate in the metal coordination sphere but is involved in hydrogen bonding with the water molecule through its nitrogen atom. So, the crystal structure packing is achieved through intra- and interionic contacts of O_W^.^.^.O_CO, O_W^.^.^.N_sac as well as C-H^.^.^.^.O type. The FT IR spectra of the title compound are studied as well. Attention is paid to the stretching H_2O, CO and SO_2 regions. The geometry of the water molecule is discussed regarding the spectroscopic and structural evidence. The appearance of the CO and SO_2 stretching regions is correlated with the number of non-equivalent CO and SO_2 groups in the structure. Spectral and structural characteristics of the title compound are compared with those of the corresponding complexes of Co, Ni and Cu.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA