“…Several X-ray crystallographic structural determinations of Ni I~ and Cu I1 dithiocarbamates have been reported in recent years. Thus structures of [Ni(R~R2dtc) 2] with Rl=R2=CH3 (Peyronel & Pegnedoli, 1967), R~ = R 2 = H (Gasparri, Nardelli & Villa, 1967), R~ =-R 2 = C2H 5 (Coucouvanis, 1979), R~ = R 2 = C2H4OH (Ramalingam, Radha, Aravamudan, Mahadevan, Subrahmanyam & Seshasayee, 1984), R~ = CH 3, R 2 = C6H 5 (Martin, Newman, Robinson & White, 1972), R~R2=(CH2) 4 (Raston & White, 1974), R ~R 2 = (cn2) 6 (Agre, Shugan & Rukhadze, 1968) and of [Cu(RlR2dtc) 21 with Rl=R2=CH 3 (Einstein & Field, 1974), RI=R 2 = C4H 9 (Boyd, Mitra, Raston, Rowbottom & White, 1981), R~R2=(CH2) 4 (Newman, Raston & White, 1973), R~=CH 3, R 2=C6H 5 (Martin, Newman, Robinson & White, 1972), R~=R 2=C2H4OH (Radha, Seshasayee, Radha, Aravamudan & Subrahmanyam, 1985) have been determined. The dtc ligand in most of its complexes with transition-metal ions adopts a delocalized form.…”