BIS-TRIS

Crystal structure of bis-[tris-(1,10-phenanthroline-kappa(2) N,N')cobalt(II)] tetra-nitrate N,N'-(1,4-phenyl-enedicarbon-yl)diglycine solvate octa-hydrate.[Pubmed:26396753]

Acta Crystallogr E Crystallogr Commun. 2015 Jul 11;71(Pt 8):910-4.

The complex cation of the title compound, [Co(C12H8N2)3]2(NO3)4.C12H12N2O6.8H2O, contains a Co(II) atom with a distorted octa-hedral coordination environment defined by six N atoms from three bidentate 1,10-phenanthroline ligands. The asymmetric unit of the title compound is completed by one-half of the N,N'-(1,4-phenyl-enedicarbon-yl)diglycine solvent mol-ecule, which is located on a centre of inversion, by two nitrate counter-anions and four solvent water mol-ecules. Two [Co(C12H8N2)3](2+) cations are connected through C-Hcdots, three dots, centeredO contacts and through lone-paircdots, three dots, centeredpi inter-actions involving the non-coordinating N,N'-(1,4-phenyl-enedicarbon-yl)diglycine and phenanthroline mol-ecules. The different aromatic ring systems are involved in pi-pi stacking and C-Hcdots, three dots, centeredpi inter-actions, with centroid-to-centroid distances in the range 3.7094 (8)-3.9973 (9) A. The crystal structure is stabilized by further anioncdots, three dots, centeredpi inter-actions and C-Hcdots, three dots, centeredO contacts, as well as O-Hcdots, three dots, centeredO and N-Hcdots, three dots, centeredO hydrogen bonds between water mol-ecules, the non-coordinating nitrate anions, N,N'-(1,4-phenyl-enedicarbon-yl)diglycine and phenanthroline mol-ecules. These non-covalent inter-actions give rise to a three-dimensional supra-molecular network.

Construction of bis-, tris- and tetrahydrazones by addition of azoalkenes to amines and ammonia.[Pubmed:28144315]

Beilstein J Org Chem. 2016 Nov 21;12:2471-2477.

Exhaustive Michael-type alkylations of amines and ammonia with azoalkenes (generated from alpha-halohydrazones) were demonstrated as an efficient approach to poly(hydrazonomethyl)amines - a novel class of polynitrogen ligands. An intramolecular cyclotrimerization of C=N bonds in tris(hydrazonomethyl)amine to the respective 1,4,6,10-tetraazaadamantane derivative was demonstrated.

Crystal structure of bis-(eta(5)-cyclo-penta-dien-yl)(1,4-di-tert-butyl-buta-1-en-3-yn-1-yl)zirconium( IV) mu2-hydroxido-bis-[tris(penta-fluoro-phen-yl)borate].[Pubmed:25844214]

Acta Crystallogr E Crystallogr Commun. 2015 Feb 28;71(Pt 3):m71-2.

Alkyl zirconocene cations have been of considerable inter-est as reactive species in many polymerization processes. In the crystal structure of the title compound, [Zr(C12H19)(C5H5)2](C36HB2F30O), the [Zr(C5H5)2((t-Bu)C=C(H)-C2(t-Bu))](+) cation displays a buta-1-en-3-yne ligand side-on coordinated to a typical bent zirconocene [centroid(cp)-Zr-centroid(cp) = 131.4 (3) degrees , Zr-C(buta-1-en-3-yne) = 2.255 (3), 2.597 (3) and 2.452 (2) A]. In the [HO(B(C6F5)3)2](-) anion, intra-molecular O-Hcdots, three dots, centeredF hydrogen bonds are observed. One tert-butyl group in the complex cation is disordered over two sets of sites with occupancies 0.701(4):0.299(4).

Crystal structure of trans-dihydrido-bis[tris-(di-methyl-amino)-phosphane-kappaP]platinum(II).[Pubmed:26029413]

Acta Crystallogr E Crystallogr Commun. 2015 Mar 14;71(Pt 4):m83-4.

The mol-ecule of the title compound, [PtH2(C6H18N3P)2], has a centrosymmetric square-planar structure in which the Pt(II) atom is bonded to two H and two P atoms in a mutually trans configuration. The Pt(II) atom sits on an inversion center and thus the asymmetric unit contains only half the mol-ecule. The Pt-P and Pt-H distances are 2.2574 (10) and 1.49 (7) A, respectively.