Core conformational rearrangement accompanying two-center, bimetallic redox reactions. Chemical and structural properties of the pyrazolyl-bridged rhodium dimers Rh(. eta. sup 5 -C sub 5 Me sub 5 )Cl(. mu. -pz) sub 2 and Rh(. eta. sup 5 -C sub 5 H sub 5 )(. mu. -pz) sub 2
- Univ. of Victoria, British Columbia (Canada)
Reaction between (Rh({eta}{sup 5}-C{sub 5}Me{sub 5})Cl({mu}-pz)){sub 2} (5), which exhibits a chair conformation for the core pyrazolyl-bridged bimetallic unit in the crystal with Rh{sub 2} separation 4.059 (2) {angstrom}, and AgBf{sub 4} affords (Rh{sub 2}({eta}{sup 5}-C{sub 5}Me{sub 5}){sub 2}({mu}-pz){sub 2}({mu}-Cl))BF{sub 4} (6), in which the cation core exists in a boat conformation with Rh centers 3.588 (2) {angstrom} apart; reduction (Zn/Cu) of 5 yields a purple product (7) tentatively identified as (Rh({eta}{sup 5}-C{sub 5}Me{sub 5})({mu}-pz)){sub 2}, the bright purple, reactive {eta}{sup 5}-C{sub 5}H{sub 5} analogue 9 of which has been synthesized from (Rh({eta}{sup 5}-C{sub 5}H{sub 5})Cl({mu}-pz)){sub 2} (8) and shown by using single-crystal X-ray diffraction to possess a deeply folded (boat) geometry in which Rh-Rh = 2.657 (3) {angstrom}.
- OSTI ID:
- 6950803
- Journal Information:
- Organometallics; (USA), Journal Name: Organometallics; (USA) Vol. 9:2; ISSN 0276-7333; ISSN ORGND
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dinuclear cyclopentadienyl carbonyl and alkyne complexes of niobium(II) and tantalum(II). Structures of ((C sub 5 H sub 4 Me)Nb(. mu. -Cl)(CO) sub 2 ) sub 2 , ((C sub 5 H sub 4 Me)Nb(. mu. -Cl)(ArC triple bond CAr)) sub 2 , and ((C sub 5 Me sub 5 )Ta(. mu. -Cl)(CO) sub 2 ) sub 2
Multiple {eta}{sup 2}-arene coordination. Structure and isomerism of naphthalene complexes of [(C{sub 5}Me{sub 5})Rh(PMe{sub 3})]
Related Subjects
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CALCULATION METHODS
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COMPLEXES
CONFORMATIONAL CHANGES
DATA
DATA ANALYSIS
DIMERS
EXPERIMENTAL DATA
INFORMATION
LIGANDS
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
PHYSICAL PROPERTIES
REDOX REACTIONS
RHODIUM COMPLEXES
TRANSITION ELEMENT COMPLEXES