Effat Iravani

SYNTHESIS OF METAL- AND PENTEL-CONTAINING HETEROCYCLES USING NITRILES AND ISONITRILES

The reaction of benzylnitrile with InMe 3 in a molar ratio of 3:1 leads to 2-amino-N-[Me 2 In(TMEDA)]-4-amino-3,5-diphenyl-6-benzyl-pyridine 2. CsF accelerates the reaction. The treatment of Ph 2 CHCN with InMe 3 in the presence of CsF gives the metalated ketenimine [(THF)Me 2 InNCCPh 2 ] 2 3. 3 and the corresponding Ga compound also can be obtained by the metathesis reaction of Me 2 MCl with LiNu═C═CPh 2 . The attack of the Lewis bases t BuELi 2 (E = P, As) on nitriles and isonitriles also leads to oligomerizations. t BuAsLi 2 reacts with two molecules of PhCN to the aromatic heterocycle [AsNC(Ph)NC(Ph)]− by forming the salt [Li(diglyme) 2 ] [(TMEDA)Li([AsNC(Ph)NC(Ph)]) 2 ] 4, while the reaction of t BuAsLi 2 with three equivalents of c HexNC leads to the dilithium compound [{Li 2 (diglyme)} 2 { t BuAs(CN c Hex) 3 } 2 ] 5. Six molecules c HexNC were consumed when Li 2 P t Bu was added to the isonitrile to give [{Li(DME)} 2 { t BuP(CN c Hex) 5 (CH)}] 6.

Synthese Und Kristallstrukturen Von Chlorometallaten [M = V(III), Mo(V)]

[(THF)2LiCl2VCl2(THF)2] (1) and [Li(THF)4][OMoCl4(THF)] (2) can be prepared by the reactions of VCI3 with LiCl in THF and of Li(H)PtBu with OM0 CI4 in THF, respectively. 1 and 2 were characterized by IR spectroscopy, MS spectrometry (2) and X-ray crystallography. 1 can be obtained in two modifications depending on the temperature of crystallization. At -30 °C a triclinic form, 1a, was isolated from THF solution with one unique molecule per asymmetric unit. However, at 20 °C, 1b crystallized in the monoclinic space group P2/c. It possesses four independent molecules per asymmetric unit. According to the structure analyses 1 consists of a dinuclear complex with a planar LiCl2V four-membered ring while 2 consists of seperate ions [Li(THF)4]+ and [OMoCl4(THF)]-