New di-n-butyltin(iv)-bis-(1-alkoxy-isoquinoline-4-nitrile thiolate): crystallographic and computational studies

Alcohol and n-Bu2Sn2+ assisted cyclization of dithiolate yielded two unexpected organotin(iv) products, their reaction mechanism and nature of weak interactions assessed.

New main-group ferrocenyldithiocarbamates and conversion to ferrocene oxazolidine-2-thione and -2-one

Three new main-group ferrocenyl dithiocarbamates and a pure cyclised product, 3-ferrocenylmethyl-oxazolidine-2-thione, were isolated using copper powder.

Observation of Intramolecular Paramagnetic T1 Spin Decoupling in the 13C NMR Spectra of Triazacyclohexane Complexes of Ni(II)

N-Benzyl-substituted complexes [(triazacyclohexane)Ni(NCMe)3](BF4)2 and their diamagnetic zinc analogues have been prepared and characterized by X-ray crystallography. The T1 spin decoupling observed in their paramagnetic 13C NMR spectra can be quantitatively described by newly derived expressions that allow an independent determination of T2 of the 13C signal, T1 of the attached H or F, and the 1J coupling constant by line shape analysis.

Bis(triazacyclohexane) sandwich complexes of (CuI)2, CuII and ZnII: complexes with cuprophilic attraction between two cationic copper(i) leading to unusual reactivity with dioxygen

As the first 1st-row transition metal complexes having six tertiary amine donor groups, bis(triazacyclohexane) sandwich complexes [L2M](BF4)2 (L = benzyl- or p-fluorobenzyl-triazacyclohexane, M = Cu or Zn) have been obtained by the protonolysis of Et2Zn in the presence of L or by reaction of [Cu(MeCN)4](BF4) with L in CH2Cl2 and subsequent air oxidation via an unprecedented Cu(I)(2) sandwich complex containing a short Cu-Cu contact.

Trimethyltriazacyclohexane as bridging ligand for triangular Cu3 units and C-H hydride abstraction into a Cu6 cluster

Reaction of [Cu(MeCN)4](BF4) with N,N',N"-trimethyl-1,3,5-triazacyclohexane in CH2Cl2 leads to two Cu6 clusters containing the triazacyclohexane as a ligand to triangular Cu3 units with the abstraction and incorporation of chloride and hydride.

The Chemistry of 1,3,5-Triazacyclohexane Complexes. 6.(1) Synthesis and Characterization of the Cobalt(II) Methoxide Core {Co(3)(OMe)(4)}(2+)

We report the synthesis and characterization of the first eta(3)-1,3,5-trimethyl-1,3,5-triazacyclohexane (Me(3)TAC) alkoxo complexes. Dehydration of [Co(H(2)O)(6)](X)(2) with 2,2-dimethoxypropane or HC(OMe)(3) and subsequent treatment with Me(3)TAC results in the formation of the methoxo cube fragment clusters [{(Me(3)TAC)Co}(3)(OMe)(4)](X)(2) (X = B(C(6)F(5))(4) (2a) and B(m-C(6)H(3)(CF(3))(2))(4) (2b)). 2a crystallizes in the triclinic space group P&onemacr; (a = 13.857(2) Å, b = 16.843(3) Å, c = 19.318(2) Å, alpha = 79.23(2) degrees, beta = 76.855(13) degrees, gamma = 70.10(2) degrees, Z = 2) and 2b in the monoclinic space group P2(1) (a = 12.710(3) Å, b = 23.251(3) Å, c = 18.702(4) Å, beta = 101.16(2) degrees, Z = 2). The cations contain a {Co(3)(OMe)(4)} cube fragment core with an eta(3)-Me(3)TAC bonded to each cobalt atom. Me(3)TAC is bonded unsymmetrically due to hydrogen-bonding interactions with the anions. This broken symmetry can also be observed as solvent-, anion-, and H/D isotope-dependent splitting of the signals in (1)H and (2)H NMR. A byproduct of the reaction is the protonated Me(3)TAC. The analogous monoacid adduct Me(3)TAC.HCl has been characterized by X-ray crystallography (orthorhombic space group Pbca, a = 11.0366(9) Å, b = 12.2986(6) Å, c = 13.9949(7) Å, Z = 8).