1. {S-Benzyl 3-[(6-methyl-pyridin-2-yl-κN)methyl-idene]dithio-carbazato-κ(2)N(3),S}zinc
Thahira B S A Ravoof, Siti Aminah Omar, Mohamed Ibrahim Mohamed Tahir, Karen A Crouse Acta Crystallogr Sect E Struct Rep Online. 2012 May 1;68(Pt 5):m534-5. doi: 10.1107/S1600536812013529. Epub 2012 Apr 4.
The title compound, [Zn(C(15)H(14)N(3)S(2))(2)], contains two chemically equivalent Schiff base anions that are coordinated to the Zn(II) ion as tridentate N,N',S-chelating ligands, creating a distorted octa-hedral environment [the smallest angle being 75.40 (6)° and the widest angle being 162.87 (6)°], with the two S atoms in cis positions. The dihedral angle between the mean planes of the two coordinating ligands is 85.65 (5)°. Weak C-H⋯S hydrogen bonds are also observed.
2. Bis[S-benzyl-3-(4-n-octyloxybenzylidene)dithiocarbazato-κ(2)N(3),S']palladium(II)
M T H Tarafder, M A A A A Islam, M B H Howlader, N Guidolin, E Zangrando Acta Crystallogr C. 2010 Dec;66(Pt 12):m363-5. doi: 10.1107/S0108270110044008. Epub 2010 Nov 6.
In the title compound, [Pd(C(23)H(29)N(2)OS(2))(2)], the Pd(II) atom displays the expected square-planar coordination geometry. However, the trans configuration, which allows the Pd(II) atom to be located on a crystallographic inversion centre, is unusual with respect to the cis arrangement found in analogous Pd complexes comprising similar N,S-chelating ligands.
3. 2,3-O-(S)-Benzyl-idene-2-C-methyl-d-ribono-1,4-lactone
K Victoria Booth, Sarah F Jenkinson, George W J Fleet, David J Watkin Acta Crystallogr Sect E Struct Rep Online. 2009 Aug 22;65(Pt 9):o2199. doi: 10.1107/S1600536809032796.
The crystal structure of the title compound, C(13)H(14)O(5), establishes (i) the (S) - rather than (R) - configuration at the acetal carbon and (ii) that both the acetal and the lactone form five- rather than six-membered rings; the absolute configuration is determined by the use of 2-C-methyl-d-ribono-1,4-lactone as the starting material. The compound consists of hydrogen-bonded chains of mol-ecules running along the a axis; there are no unusual packing features. Only classical hydrogen bonding has been considered.
