Syntheses and structural characterizations of di-substituted alkylimido hexamolybdates: an insight on bi-alkylimido functionalization.

نویسندگان

  • Chunlin Lv
  • Jin Zhang
  • Jian Hao
  • Lei Liu
  • Yongge Wei
چکیده

Bi-alkylimido functionalization of hexamolybdates has been developed and several novel di-substituted alkylimido hexamolybdates with n-butyl, cyclohexyl and tert-butylamines as the imido-releasing reagents have been synthesized in reasonable yields. Their structures have been characterized by elemental analysis, IR, UV-Vis, and ESI mass spectrometry. Moreover, the structures of [Mo(6)O(17)(NCy)(2)](2-) and [Mo(6)O(17)(NCMe(3))(2)](2) have been determined by single-crystal X-ray diffraction techniques. It is notable that the compound (Bu(4)N)(2)[Mo(6)O(17)(NCy)(2)] crystallizes in polar space group Fdd2 with potential ferroelectricity. In addition, theoretical investigation of the reactivity and regioselectivity of bi-alkylimido functionalization has also been conducted. The calculation results show that more energy is required for the bi-functionalization process than for the mono-substitution process, and that the cis-bi-functionalization is the kinetically favored process while trans-[Mo(6)O(17)(NR)(2)](2-) is the thermodynamically favored product.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Postfunctionalization of polyoxometalates: an efficient strategy to construct organic-inorganic zwitterions.

A class of monoorganoimido-substituted hexamolybdates containing a pyridine group have been firstly synthesized. Furthermore, a reaction protocol of alkylation based on the resulting pyridine-functionalized hexamolybdates has been developed, with which a type of zwitterionic clusters has been successfully obtained.

متن کامل

Titanium(IV) imido complexes of imine imidazol-2-imine ligands.

Free imine imidazol-2-imine ligands with two different substitution patterns have been isolated for the first time and they were found to exist as an equilibrium mixture of geometric and mesomeric isomers. The relative ratios of these isomers are dependent on both the nature of the substituents and of the solvent. The synthesis of the titanium(IV) alkyl and arylimido complexes of these ligands ...

متن کامل

Syntheses, Characterization and Solvatochromism Study of Heteroleptic Chelated Copper(II) Complexes Containing N,N- dibezyl Substituted Ethylenediamine and Acetylacetonate Ligands

A series of new heteroleptic chelated copper(II) complexes that encompass N,N-dibezyl substituted derivative of ethylenediamine (X-diamine) and acetylacetonate (acac) were prepared.  The IR and electronic absorption spectra and the molar conductivity of the complexes are presented and discussed.  The molar conductivity values of the complexes in different solvents reveals a predominance of elec...

متن کامل

Stirring the porphyrin alphabet soup--functionalization reactions for porphyrins.

Advances in the synthesis of unsymmetrically meso substituted porphyrins are based on the development of new total syntheses and porphyrin functionalization methods. These methods have replaced earlier mixed condensation reactions and give synthetic access to almost any desired meso-substituted porphyrin. They include the complete series of porphyrin homologues and regioisomers of the A(x)-seri...

متن کامل

Ring-opening Metathesis Polymerization Molybdenum(vi) Alkylidene Catalysts

S Chapter 1 Study of Chiral Arylimido Molybdenum ROMP Catalysts. Molybdenum ROMP catalysts with a chiral ortho-(phenethyl)phenylimido ligand have been prepared. Mo(CHCMe2Ph)(N-2-C 6H4-CHMePh)(O-2,6-C 6H3-Ph2)2 (1la) and Mo(CHMe 2Ph)(N2-C6H4-CHMePh)[BIPHENO(Me) 2(t-Bu) 4] (11b) were isolated and shown to effect the polymerization of 2,3-dicarbomethoxynorbonadienes. Highly-trans syndiotactic poly...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Dalton transactions

دوره 41 33  شماره 

صفحات  -

تاریخ انتشار 2012