Coordination environment friendly silicon in copper(I) chloride π-complexes with tetravinylsilane and dimethyltetravinyldisiloxane
                                
                                    
                                        作者:T. Dużak、B. Zarychta、V.V. Olijnyk                                    
                                    
                                        DOI:10.1016/j.ica.2010.09.018
                                    
                                    
                                        日期:2011.1
                                    
                                    Two crystal complexes of copper(I) chloride with tetravinylsilane (TVS) dimethyltetravinyldisiloxane (DMTVDS) were prepared and examined by IR spectroscopy and X-ray diffraction: sp. gr. P2/a, Z = 4, a = 13.428(1) angstrom, b = 7.9584(7) angstrom, c = 14.694(1) angstrom for [Cu4Cl4(TVS)]; sp. gr. P2(1)/c, a = 10.505(1) angstrom, b = 13.487(1) angstrom, c = 13.870(1) angstrom for [Cu4Cl4(DMTVDS)]. The influence of the vinylsilicon ligands on the efficiency of the Cu center dot center dot center dot C=C interaction is discussed. Thus, the consideration of d(Si) <- pi*(C=C) <- d(Cu) conjugate system may help to understand how the silicon pi-acceptor properties influence on the degree of trigonal distortion of the Cu(I) coordination tetrahedron as well as on the inorganic part organization. The present studies are aimed at the use of the structure controlled nanoparticles supported on vinyl modified silicon (or silicone) substrate. (C) 2010 Elsevier B. V. All rights reserved.