Tris(pyrazolyl)borate complexes of yttrium. X-ray crystal structures of (HB(pz)/sub 3/)/sub 2/YCl(Hpz) and ((HB(pz)/sub 3/)Y(. mu. -O/sub 2/CCH/sub 3/)/sub 2/)/sub 2/ (pz = pyrazolyl ring)
Journal Article
·
· Inorg. Chem.; (United States)
Reaction of YCl/sub 3/ with 2 equiv of K(HB(pz)/sub 3/) (pz = pyrazolyl ring) in THF yields the unsolvated complex ((HB(pz)/sub 3/)/sub 2/YCl)/sub x/ (1). In solution, the molecular weight is concentration dependent, showing that this complex is in a monomer-dimer equilibrium. In a similar reaction to which 1 equiv of pyrazole, Hpz, has been added, the adduct (HB(pz)/sub 3/)/sub 2/YCl(Hpz) (2) is formed. The molecular structure of 2 has been determined by single-crystal x-ray diffraction. The structure is best described as a square antiprism, distorted in the direction of a bicapped trigonal prism. The two mixed tris(pyrazolyl)borate-acetate complexes ((HB(pz)/sub 3/)/sub 2/H(..mu..-O/sub 2/CCH/sub 3/)/sub 3/ (3) and ((HB(pz)/sub 3/))Y(..mu..-O/sub 2/CCH/sub 3/)/sub 2/)/sub 2/ (4) are prepared from the reaction of YCl/sub 3/, K(HB(pz)/sub 3/), and Na(O/sub 2/CCH/sub 3/) in the respective stoichiometric amounts. The trimeric formulation of 3 was determined from solution-state molecular weight studies. The solid-state structure of 4 has been determined crystallographically. A structure is proposed for this centrosymmetric dimer. 22 references, 5 figures, 8 tables.
- Research Organization:
- Univ. of South Carolina, Columbia (USA)
- OSTI ID:
- 6221884
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 27:22; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
·
Wed Sep 27 00:00:00 EDT 1995
· Inorganic Chemistry
·
OSTI ID:191950
Synthesis, characterization, and oxygen atom transfer reactions of (HB(Me sub 2 C sub 3 N sub 2 H) sub 3 )MoO(S sub 2 P(OR) sub 2 ) and (HB(Me sub 2 C sub 3 N sub 2 H) sub 3 )MoO sub 2 (. eta. sup 1 -S sub 2 P(OEt) sub 2 )
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
AZOLES
BARYONS
BORON 11
BORON COMPOUNDS
BORON ISOTOPES
CARBON 13
CARBON ISOTOPES
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL STRUCTURE
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HADRONS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PROTONS
PYRAZOLES
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM CHLORIDES
YTTRIUM COMPOUNDS
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
AZOLES
BARYONS
BORON 11
BORON COMPOUNDS
BORON ISOTOPES
CARBON 13
CARBON ISOTOPES
CHLORIDES
CHLORINE COMPOUNDS
CRYSTAL STRUCTURE
DATA
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
HADRONS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
NMR SPECTRA
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PROTONS
PYRAZOLES
SPECTRA
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM CHLORIDES
YTTRIUM COMPOUNDS