Tj. Brunker et al., (eta(5)-cyclopentadienyl)(kappa(3)-hydrotris(pyrazolyl)borate)cobalt(II) -the first high-spin cobalt organometallic complex, CHEM COMMUN, (20), 2001, pp. 2052-2053
(eta (5)-Cyclopentadienyl)(kappa (3)-hydrotris(pyrazolyl)borate)cobalt(II)
has been synthesised; magnetic and crystallographic data indicate this to b
e the first example of a high-spin cobalt organometallic complex whilst its
pentamethylcyclopentadienyl analogue is found to have a low-spin electroni
c configuration.