Structural features of several heteroborane complexes of divalent platinum. Crystal structures of 9-bis(triphenylphosphine)-6-carbodecaborane and 6-thiodecaborane complexes of platinum (in Russian)
An x-ray diffraction investigation of carborane complexes of Pt(2+) with the general formula 9-(PPh/sub 3/)/sub 2/Pt-6-XB/sub 8/H/sub 10/, where X = CH/sub 2/ (I) and S (II), have been carried out (lambda Mo, least-squares method in the anisotropic-isotropic approximation to R = 0.035 and 0.062 on the basis of 4427 and 3449 reflections for compounds I and II, respectively). The crystals of compounds I and II are monoclinic: a = 14.359 and 11.514, b = 14.083 and 20.040, c = 14.988 and 16.416 A, ..beta.. = 105.37 and 95.68/sup 0/, Z = 4, space group p2/sub 1//n for I and II, respectively. The Pt atoms in compounds I and II are coordinated by two P atoms and triatomic ..pi..-allyl-like 3B fragment in the carborane. Compounds I and II have nido structures. The Pt and X atoms are located in para positions at the vertices of a six-atom boat formed by the outer girdle of the carborane framework. The bond lengths and angles in compounds I and II are: Pt-P/sub av/ = 2.317 and 2.320; Pt-B = 2.19 to 2.25 and 2.21 to 2.28, X-B = 1.64 to 1.75 and 1.92 to 1.93 A, PPtP = 98.70 and 98.4/sup 0/. The structure of the Pt(PPh/sub 3/)/sub 2/ fragment, the packing of the complexes, and the intra- and intermolecular contacts in compound I have been discussed in detail. The results of the investigation of compounds I and III have been compared with the literature data on other heteroborane complexes of d/sup 8/ metals.
- OSTI ID:
- 6416364
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Vol. 11:3; Other Information: Translated from Koordinatsionnaya Khimiya; 11: No. 3, 385-399(Mar 1985)
- Country of Publication:
- United States
- Language:
- Russian
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
CARBORANES
MONOCLINIC LATTICES
STRUCTURAL CHEMICAL ANALYSIS
PLATINUM COMPLEXES
BOND ANGLE
BOND LENGTHS
CATALYSTS
CATALYTIC EFFECTS
COORDINATION VALENCES
INTERATOMIC DISTANCES
LATTICE PARAMETERS
LEAST SQUARE FIT
LIGANDS
MOLECULAR STRUCTURE
PHOSPHINES
SPACE GROUPS
X-RAY DIFFRACTION
BORON COMPOUNDS
CARBON COMPOUNDS
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
DISTANCE
LENGTH
MAXIMUM-LIKELIHOOD FIT
NUMERICAL SOLUTION
PHOSPHORUS COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPLEXES
VALENCE
400201* - Chemical & Physicochemical Properties
360602 - Other Materials- Structure & Phase Studies