178484-97-4Relevant academic research and scientific papers
Cis- And trans-Dimolybdenum(11) Complexes with Asymmetrically 2,7-Disubstituted Naphthyridines as Bridging Ligands
Mintert, Markus,Sheldrick, William S.
, p. 683 - 689 (1996)
Treatment of [Mo(CO)6] with Hmamnp (2-acetamido-7-methyl-1,8-naphthyridine) in diglyme at 100°C affords the mononuclear complex [Mo(CO)4{Hmamnp)] 1, an intermediate product on the reaction pathway to tetrasubstituted species of the type [Mo2L4]. A disubstituted intermediate product cis-[Mo2(mphamnp)2(OAc)2] 2 (Hmphamnp) (2-acetamido-5-methyl-7-phenyl-l,8-naphthyridine) may be isolated from the reaction of [Mo2(OAc}4] with mphamnp in THF. The relative stabilisation of such products is a result of the steric demands of the coplanar 2-acetamido substituents. 2 and the tetrasubstituted complexes trans-[Mo2{mbznnp)4] 3 (Hmbznnp = 2-benzylamino-7-methyl-l,8-naphthyridme), tis-[Mo2(mphonp)4] 4, and trans-[Mo2(mphonp)4] 5 (Hmphonp = 5-methyl-7-phenyl-l,8-naphthyridin-2-one) all exhibit the electronically prefered μ-N1,X2 bridging mode. Steric effects are responsible for the isolation of the unusual cis isomer 4. VCH Verlagsgesellschaft mbH, 1996.
