Structural investigations of nickel complexes. Part I. Crystal and molecular structure of cis-dichlorobis(1-benzyl-Δ3-phospholen)nickel(II)

Autor:	Louis D. Quin, J. F. Engel, R. C. Komson, Andrew T. McPhail
Rok vydání:	1972
Předmět:	Bond length Crystal Crystallography Nickel chemistry.chemical_compound chemistry Covalent radius chemistry.chemical_element Molecule General Chemistry Ring (chemistry) Phosphine Monoclinic crystal system
Zdroj:	J. Chem. Soc., Dalton Trans.. :874-878
ISSN:	1364-5447 0300-9246
DOI:	10.1039/dt9720000874
Popis:	The crystal and molecular structure of the title compound has been determined by single-crystal X-ray analysis with 3112 independent reflections and refined to R 0·095. The crystals are monoclinic, space-group P21/c, with a= 10·40(2), b= 12·91(2), c= 18·00(3)A, β= 112·67(10)°; Z= 4. The molecule has approximate C2 symmetry and co-ordination around the nickel atom is tetrahedrally distorted square planar with mean Cl–Ni–P angles of 164·7°. A high trans-influence of the tertiary phosphine ligands is noted in the complex. The mean Ni–P [2·154(2)A] and Ni–Cl [2·212(2)A] bond lengths are respectively 0·12 shorter and 0·05 A longer than the corresponding values derived from the sum of the covalent radii. The phospholen rings are puckered, mean C–P–C angle 94·0°± 0·4°, and the mean phosphorus atom displacement from the best plane through the ring carbon atoms is 0·385 A.
Databáze:	OpenAIRE
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