Synthesis of phosphinoferrocene amides and thioamides from carbamoyl chlorides and the structural chemistry of Group 11 metal complexes with these mixed-donor ligands.

The reaction of in situ generated 1'-(diphenylphosphino)-1-lithioferrocene with carbamoyl chlorides, ClC(E)NMe2, affords the corresponding (thio)amides, Ph2PfcC(E)NMe2 (E = O (), S (); fc = ferrocene-1,1'-diyl). These compounds as well as their analogues, Ph2PfcC(O)NHMe () and Ph2PfcC(O)NH2 (), prepared from 1'-(diphenylphosphino)ferrocene-1-carboxylic acid (Hdpf) were studied as ligands for the Group 11 metal ions. In the reactions with [Cu(MeCN)4][BF4], the amides give rise to bis-chelate complexes of the type [Cu(L-κ(2)O,P)2][BF4].

1-Methane-sulfonyl-1H-1,2,3-benzotriazole.

The mol-ecular geometry of the title compound, C(7)H(7)N(3)O(2)S, does not differ much from that of the previously reported 4-toluene-sulfonyl analogue. Unlike the latter compound, however, mol-ecules of the title compound associate primarily via π-π stacking inter-actions of their benzene rings [centroid-centroid distance = 3.5865 (8) Å], forming columnar stacks along the crystallographic 2(1) axes.