In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 48, No. 8 ( 1993-8-1), p. 1105-1111
Abstract:
[WCl 4 (Ph-C≡C-I)(THF)] has been prepared by the reaction of trans-[WCl 4 (SEt 2 ) 2 ] with Ph - C≡C - I in THF solution, whereas [WCl 4 (Ph-C≡C-Te-nC 4 H 9 )(THF)] has been synthesized by the reaction of Ph-C≡C-Te-nC 4 H 9 with tungsten hexacloride in the presence of C 2 Cl 4 and THF. Both complexes were characterized by IR spectroscopy and by crystal structure determinations. [WCl 4 (Ph-C≡C-I)(THF)]: Space group P2 1 /c, Z = 4, 2617 observed unique reflections, R = 0.064. Lattice dimensions at –70°C: a = 1518.2(3), b = 714.5(1), c = 1540.0(3) pm, β = 90.09(3)°. [WCl 4 (Ph-C≡C-Te–nC 4 H 9 )(THF)]. Space group P1̄, Z = 2, 3911 observed unique reflections, R = 0.067. Lattice dimensions at 20°C: a = 844.0(3), b = 974.6(4), c = 1002.4(3) pm, α = 76.00(4), β= 105.14(1), γ = 82.03(3)°. Both complexes have molecular structures, in which the tungsten atoms are seven-coordi-nate by four chlorine ligands, by the two alkyne carbon atoms, and in trans position to the latter by the oxygen atom of the THF molecule. The WC bond lengths are 198 and 200(1) in the telluro complex and 206 and 196(1) pm in the iodine derivative.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-1993-0812
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1993
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
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