A Linear RN2-Transition Metal Linkage. The Structure of Ru(H2)(N2)(B10H8)S(CH3)(P(C6H5)3)3.3C6H6

K. Dahl Schramm, James A. Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

The structure of RuH2(N2B10H8S(CH3)2)(P(C6H5)3)3·3C6H6 has been determined crystallographically and consists of discrete molecules of the diazo complex and solvent. The complex crystallizes from benzene-methanol in the triclinic space group Ci1-P1 with two formula units in a unit cell of dimensions a = 23.80 (1) Å, b = 12.683 (6) Å, c = 12.793 (6) Å, α = 105.63 (2)°, β = 99.16 (2)°, γ = 101.00 (3)°, ρexptl= 1.25 (3) g/cm3, and ρcalcd = 1.242 g/cm3. The structure was solved by Patterson methods. Least-squares refinement has led to a final value of the conventional R index for Fo2> 3σ(Fo2) of 0.072 based on 5590 reflections. This complex of Ru(II) possesses pseudooctahedral geometry with cis hydride ligands and meridinal phosphine ligands. The diazo group N2B10H8S(CH3)2 is trans to H(1): H(1)-Ru-N(1) = 173(2)°. The RuNNB segment is essentially linear: Ru-N(1)-N(2) = 175.9 (6)° and N(1)-N(2)-B(1) = 172.7 (8)°. This is the first reported example of a transition metal-diazo complex containing the totally linear MNNR linkage. The boron cage possesses regular bicapped Archimedean antiprism geometry; the B-B distances within the square plane are 1.83-1.87 Å with B-B-B-bond angles of approximately 90°. The B-B′ distances of bridging boron atoms range from 1.76 to 1.81 Å with B-B′-B angles of approximately 60°. Some important distances are Ru-N(1) = 1.889 (8), N(1)-N(2) = 1.115 (8), and N(2)-B(1) = 1.50 (1) Å.

Original languageEnglish (US)
Pages (from-to)3287-3293
Number of pages7
JournalInorganic chemistry
Volume16
Issue number12
DOIs
StatePublished - Dec 1 1977

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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