Polyhedral Ruthenaborane Chemistry: Characterization of Several New Ruthenaboranes by Nuclear Magnetic Resonance Spectroscopy, and the Crystal and Molecular Structure of

DOI: 10.1039/DT9850002397

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2397 - 2406 (1985)

Update date:2022-09-26

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Authors:

Greenwood, Norman N.

Kennedy, John D.

Thornton-Pett, Mark

Woollins, J. Derek

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Article abstract of DOI:10.1039/DT9850002397

Several new polyhedral ruthenaborane clusters have been synthesized, sometimes in high yield, by the reaction of borane anions with a variety of ruthenium(II) complexes such as , , , and .Thus arachno-^- yielded the colourless four-vertex ruthenaborane arachno-<(CO)(PPh3)2HRuB3H8> (1), whereas nido-^- yielded the pale yellow five-vertex cluster nido-<(CO)(PPh3)2RuB4H8> (2) and the six-vertex cluster nido-<(CO)(PPh3)2RuB5H9> (3).An interesting series of 6-ruthena-nido-decaboranes was also synthesized: arachno-^- (and, less effectively, deprotonated nido- B10H14) yielded orange nido-<(CO)(PPh3)2RuB9H13> (4) and light yellow nido-<(CO)(PPh3)2RuB9H11(PPh3)> (5), whilst nido-^- afforded amber-red crystals of nido-<(PPh3)2HRuB9H12(PPh3)> (6).Structures have been assigned on the basis of detailed 1H, 11B, and 31P n.m.r. studies and comparison with iron, osmium, and iridium analogues where these are known.The structure of <5,6,6-(PPh3)3-6-H-nido-6-RuB9H12> (6) was confirmed by a single-crystal X-ray diffraction study; the monoclinic crystals contained 0.25CH2Cl2 as solvent of crystallization =1263.2(5), b=1786.2(3), c=2692.8(9) pm, β=95.09(3)deg, U=6.256 nm³, space group P2₁/c, and Z=4>.All thirteen H atoms on the cluster were located and freely refined with individual isotropic thermal parameters.

Full text of DOI:10.1039/DT9850002397

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