A self-penetrated chiral cobalt camphorate coordination polymer with antiferromagnetically coupled paddlewheel clusters

• Published in: Inorganic chemistry communications 2011-08, Vol.14 (8), p.1250-1253
• Main Authors: Blake, Karyn M., LaDuca, Robert L.
• Format: Article
• Language: English
• Subjects: Antiferromagnetism; Cobalt; Coordination polymer; Crystal structure; Self-penetration
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2011.04.033

The chiral coordination polymer [Co 2( D-cmph) 2(4-bpmp)] n ( 1, D-cmph = D-camphorate, 4-bpmp = bis(4-pyridylmethyl)piperazine) exhibits [Co 2( D-cmph) 2] n layers with embedded {Co 2(OCO) 4} equatorial–equatorial bridged paddlewheel clusters. The long-spanning dipyridyl tethering ligands link the layers into a 6-connected 3-D self-penetrated network with 4 46 108 mab topology, in which shortest 6-membered circuits are penetrated by two others. High thermal stability is observed for the self-penetrated network. Antiferromagnetic coupling ( J = −3.9(1) cm − 1 ) is observed in 1. The chiral coordination polymer [Co 2( D-cmph) 2(4-bpmp)] n ( 1, D-cmph = D-camphorate, 4-bpmp = bis(4-pyridylmethyl)piperazine) has a 6-connected 3-D self-penetrated mab network with embedded antiferromagnetically coupled {Co 2(OCO) 4} equatorial–equatorial bridged paddlewheel clusters. [Display omitted] ► Chiral cobalt coordination polymer layers with D-camphorate. ► Cross-pillared by bis(4-pyridylmethyl)piperazine into self-penetrated mab net. ► Antiferromagnetic coupling within embedded {Co 2(OCO) 4} clusters. ► High thermal stability.