Article

N-(2,6-Diisopropyl-phen-yl)-N-{3-[(2,6-diisopropyl-phen-yl)imino]-butan-2-yl}aza-nide trichloridostannate(II).

Acta Crystallographica Section E Structure Reports Online (Impact Factor: 0.35). 06/2012; 68(Pt 6):m719-20. DOI: 10.1107/S1600536812014729
Source: PubMed

ABSTRACT In the title compound, (C(28)H(43)N(2))[SnCl(3)], two pairs of molecular species are present in the asymmetric unit. The employed α-diimine opens up, forming a highly asymmetric ammonium that has its protons at one of the N atoms [N-C= 1.264 (4) and 1.516 (4) Å]. One of the C=N double bonds was oxidized to C-N, which is consistent with the bond length of 1.516 (4) Å. Meanwhile Sn(IV) was reduced to Sn(II). The (SnCl)(3) (-) anion is trigonal-pyramidal. In the crystal, mol-ecules are linked by C-H⋯Cl, N-H⋯Cl, N-H⋯N and C-H⋯N bonds. The crystal studied was twinned by pseudo-merohedry.

0 Bookmarks
 · 
79 Views
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: An account is given of the development of the SHELX system of computer programs from SHELX-76 to the present day. In addition to identifying useful innovations that have come into general use through their implementation in SHELX, a critical analysis is presented of the less-successful features, missed opportunities and desirable improvements for future releases of the software. An attempt is made to understand how a program originally designed for photographic intensity data, punched cards and computers over 10000 times slower than an average modern personal computer has managed to survive for so long. SHELXL is the most widely used program for small-molecule refinement and SHELXS and SHELXD are often employed for structure solution despite the availability of objectively superior programs. SHELXL also finds a niche for the refinement of macromolecules against high-resolution or twinned data; SHELXPRO acts as an interface for macromolecular applications. SHELXC, SHELXD and SHELXE are proving useful for the experimental phasing of macromolecules, especially because they are fast and robust and so are often employed in pipelines for high-throughput phasing. This paper could serve as a general literature citation when one or more of the open-source SHELX programs (and the Bruker AXS version SHELXTL) are employed in the course of a crystal-structure determination.
    Acta Crystallographica Section A Foundations of Crystallography 02/2008; 64(Pt 1):112-22. · 2.24 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In the title compound, [Al(C(29)H(41)N(2))(C(2)H(2)N(2)P)(2)], the Al(III) atom is coordinated by four N atoms from β-diketiminate and 1,2,4-diaza-phospho-lide ligands in a slightly distorted tetra-hedral fashion.
    Acta Crystallographica Section E Structure Reports Online 01/2010; 66(Pt 12):m1681. · 0.35 Impact Factor

Full-text (2 Sources)

View
20 Downloads
Available from
May 19, 2014