TY - JOUR
T1 - Diazine based ligand supported CoII3 and CoII4 coordination complexes
T2 - role of anions
AU - Sikdar, Yeasin
AU - Goswami, Ranadip
AU - Modak, Ritwik
AU - Basak, Megha
AU - Heras Ojea, María José
AU - Murrie, Mark
AU - Goswami, Sanchita
N1 - Funding Information:
YS and SG are thankful to the Council of Scientific & Industrial Research (Sanction no. 09/028(0983)2016-EMR-I), India, and the Department of Science and Technology (DST-SERB) for the financial support respectively. DST-FIST and DST-PURSE are acknowledged for providing single crystal XRD and ESI-MS facility at the Department of Chemistry, University of Calcutta. We would also like to thank CAS-V (UGC), the Department of Chemistry, University of Calcutta, for funding. We are also thankful to Prof. Prasanta Ghosh, Ramakrishna Mission Residential College (Autonomous), Narendrapur, India, for providing the single crystal X-ray diffraction facility and Dr Pinaki Saha for data collection. The Department of Physics, University of Calcutta, is acknowledged for providing the powder XRD measurement facilities. MM and MHO thank the University of Glasgow for financial support.
Publisher Copyright:
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
PY - 2018
Y1 - 2018
N2 - We report the synthesis and characterisation of a family of three CoII4 and two CoII3 complexes from a symmetrical diazine ligand, H2hyda = N,N-bis(3-methoxy salicylidene)hydrazine. The metallic skeletons of all complexes reveal a nearly linear arrangement of CoII centers. The present results highlight the profound influence of anions on the structural outcome of a complex. Furthermore, distortion imposed by the twisted nature of the diazine-based ligand depends on the use of associated anions which results in triple helical CoII4 and double helical CoII3 entities. The CoII ions in complexes 1-3 are antiferromagnetically coupled leading to an S = 0 ground state. In contrast, complexes 4 and 5 exhibit a magnetic ground state, but exhibit different behaviours at low temperatures due to differences in crystal packing and hence intermolecular interactions.
AB - We report the synthesis and characterisation of a family of three CoII4 and two CoII3 complexes from a symmetrical diazine ligand, H2hyda = N,N-bis(3-methoxy salicylidene)hydrazine. The metallic skeletons of all complexes reveal a nearly linear arrangement of CoII centers. The present results highlight the profound influence of anions on the structural outcome of a complex. Furthermore, distortion imposed by the twisted nature of the diazine-based ligand depends on the use of associated anions which results in triple helical CoII4 and double helical CoII3 entities. The CoII ions in complexes 1-3 are antiferromagnetically coupled leading to an S = 0 ground state. In contrast, complexes 4 and 5 exhibit a magnetic ground state, but exhibit different behaviours at low temperatures due to differences in crystal packing and hence intermolecular interactions.
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U2 - 10.1039/C8NJ02955E
DO - 10.1039/C8NJ02955E
M3 - Article
AN - SCOPUS:85055440865
SN - 1144-0546
VL - 42
SP - 17587
EP - 17596
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 21
ER -