An Unusual Coordination Mode in a Bis(dialkyldithiocarbamato)zinc(II) Adduct with N,N,N‘,N‘-Tetramethylethylenediamine:  X-ray Crystal Structures of 2[MeⁱPrNCS₂]₂Zn·Me₂N(CH₂)₂NMe₂ and [MeⁱPrNCS₂]₂Zn·C₅H₅N

Abstract

The N,N,N ‘,N ‘-tetramethylethylenediamine and pyridine adducts of bis(N-methylisopropyldithiocarbamato)zinc have been synthesized and characterized. The pyridine adduct shows a simple 1:1 stoichiometry. The TMED molecule assumes a bridging position unusual in the coordination chemistry of group 12 metals.

μ-(4,4′-Bipyridine)-N:N′-bis[bis-(pyrrolidinedithiocarboxylato-S,S′)zinc(II)]

“…The 4,4 H -bipy ligand is not planar and the dihedral angle between the two pyridine rings is 38.6 . There are two short [2.3319 (8) A Ê ] and two long ZnÐS bond lengths [2.6290 (9) A Ê ], which are similar to the distances found in [Zn(Me i PrNCS 2 ) 2 ] 2 ÁTMED (Malik et al, 1997) of 2.349 (2) and 2.5640 (7)/2.6103 (7) A Ê , respectively. The short ZnÐS bonds are associated with the longer SÐC distances.…”

“…. However, this is not the case for the N,N,N H ,N H -tetramethylethylenediamine (TMED) adduct of the asymmetric dithiocarbamate species [Zn(S 2 CNMe i Pr) 2 ], which was reported as consisting of two bis(N-methylisopropyldithiocarbamato)zinc molecules bridged by a TMED molecule (Malik et al, 1997). We report here the crystal structure of "-(4,4 H -bipyridine)-N:N H -bis[bis(pyrrolidinedithiocarboxylato-S,S H )zinc(II)], (I), composed of two bis-(pyrrolidinedithiocarboxylato)zinc(II) moieties bridged by a 4,4 H -bipyridine (4,4 H -bipy) molecule.…”

Bis(N-isopropyl-N-methyldithiocarbamato-κ2S,S′)(1,10-phenanthroline-κ2N,N′)zinc

“…For the use of the parent zinc compound and nitrogen adducts as precursors for ZnS nanoparticles, see: Motevalli et al (1996); Malik et al (1997). For background to supramolecular polymers of zinc-triad dithiocarbamates and related structures, see: Benson et al (2007); Jamaluddin et al (2011).…”

“…The dinuclear parent {Zn[S 2 CN(Me)iPr] 2 } 2 compound and its nitrogen-based adducts have proven useful as synthetic precursors for ZnS nanoparticles (Motevalli et al, 1996;Malik et al, 1997).…”

CRYSTAL STRUCTURE AND THERMAL ANALYSIS OF A 4,4′-BIPY-BRIDGED BINUCLEAR ZINC(II) COMPLEX, 2[R2NCS2]2 · Zn(4,4′-BIPY) (R=PIPERIDYL)

“…The parent dimeric dithiocarbamates can be broken into monomeric species by adduct formation, as illustrated by recent structural studies of the 2,2'-bipyridyl [2], 1,lOphenanthroline [2] and triethylphosphine [3] adducts of Cd(S2CNEt& and 1,2-bis(diethylphosphiino)ethane adducts of zinc and cadmium bis(diethy1-dithiocarbamates) [3]. However, this is not the case for the N,N,M, N-tetramethylethylenediamine (TMED) adduct of the asymmetric dithiocarbamate species Zn(S2CNMe'Pr)2 which was reported as consisting of two bis(N-methylisopropy1dithiocarbamato)zinc molecules bridged by a TMED molecule [4]. Although 4,4'-bipy is a more common bridging ligand, the structural consequences of employing it for adduct formation of dithiocarbamate complex are unknown.…”