TY - JOUR
T1 - A triplet biradical organocalcium species derived from partial oxygen quenching of a substituted cyclopentadienyl calcium compound
AU - Gardiner, Michael G.
AU - Hanson, Graeme R.
AU - Junk, Peter C.
AU - Raston, Colin L.
AU - Skelton, Brian W.
AU - White, Allan H.
PY - 1992/8/15
Y1 - 1992/8/15
N2 - Reaction of [Ca{C5H3-1,3-(SiMe3) 2}2] 1, in toluene with oxygen yields the stable, rigid biradical [Ca{η-C5H3-1,3- (SiMe3) 2} {μ-OC5H2-2,4-(SiMe3) 2}]2 2, characterised by an X-ray structure determination [Ca-O 2.298(3), 2.210(3) Å; Ca-centroid 2.374(-)°; Ca-O-Ca 105.4(1)°; O-Ca-centroid 149.4(-)°] and EPR spectroscopy (resonance at g = 9.01, 4.21, 3.87 result from a super-exchange interaction between two unpaired electrons in the biradical).
AB - Reaction of [Ca{C5H3-1,3-(SiMe3) 2}2] 1, in toluene with oxygen yields the stable, rigid biradical [Ca{η-C5H3-1,3- (SiMe3) 2} {μ-OC5H2-2,4-(SiMe3) 2}]2 2, characterised by an X-ray structure determination [Ca-O 2.298(3), 2.210(3) Å; Ca-centroid 2.374(-)°; Ca-O-Ca 105.4(1)°; O-Ca-centroid 149.4(-)°] and EPR spectroscopy (resonance at g = 9.01, 4.21, 3.87 result from a super-exchange interaction between two unpaired electrons in the biradical).
UR - http://www.scopus.com/inward/record.url?scp=37049076180&partnerID=8YFLogxK
U2 - 10.1039/C39920001154
DO - 10.1039/C39920001154
M3 - Article
AN - SCOPUS:37049076180
SN - 0022-4936
SP - 1154
EP - 1156
JO - Journal of the Chemical Society, Chemical Communications
JF - Journal of the Chemical Society, Chemical Communications
IS - 16
ER -