Accession Number : ADA115177

Title :   Pyrrolyl Compounds of the Main-Group Elements. II. The Crystal and Molecular Structure of (n1-C4H4N)4Si and the Reaction of C4H4NLi with SiHCL3.

Descriptive Note : Technical rept.,


Personal Author(s) : Atwood,Jerry L ; Cowley,Alan H ; Hunter,William E ; Sena,Salvador F

PDF Url : ADA115177

Report Date : 25 May 1982

Pagination or Media Count : 36

Abstract : In a previous paper, we discussed the syntheses, structures and reactivities of tris(pyrrolyl)phosphine and arsine. The present paper is concerned with pyrrolyl compounds of silicon. Interestingly, (C4H4N)4Si (1)3 and (C4H4N)3 SiH (2)4 were prepared over seventy years ago by the reaction of C4H4NK with SiCl4 and SiHCl3, respectively. However, compound 1 has been mentioned only once in the intervening years. We have investigated the reaction of C4H4NLi with SiCl4 and SiHCl3 and found that compound 1 is converted to compound 2 in the presence of C4H4NLi. A single-crystal X-ray diffracion study of 1 was undertaken to define the mode of bonding between silicon and the pyrrolyl ligands. Moreover, since the pyrrolyl ligand is potentially a two-fold rotor, considerable interest focussed on the stereochemistry of 1. (Author)

Descriptors :   *Single crystals, *Crystal structure, *Molecular structure, *X ray spectroscopy, Ligands, Arsines, Mass spectroscopy, Two dimensional, Stereochemistry, Chemical bonds, Silicon, Pyrroles, Pyrrolidines, Nuclear magnetic resonance, Nitrogen compounds, Rotors

Subject Categories : Crystallography
      Atomic and Molecular Physics and Spectroscopy
      Particle Accelerators

Distribution Statement : APPROVED FOR PUBLIC RELEASE