Synthesis, molecular and crystalline architectures, and properties of a mononuclear complex [CoII (benzidine)2(NCS)2(OH2)2]

Journal of Chemical Sciences

Subhasish Kundu³  Subhasis Roy³  Joan Ribas¹  Kishalay Bhar³  Barindra Kumar Ghosh1³  Rajarshi Ghosh³  Chia-Her Lin² 

[1] Departament de Química Inorgánica, Universitat de Barcelona, Diagonal, 647; 08028 Barcelona, Spain$$;Depatrment of Chemistry, Chung Yuan Christian University, Chung Li, Taiwan 32023, ROC$$;Department of Chemistry, The University of Burdwan, Burdwan 713 104, India$$

关键词: Cobalt(II);    thiocyanate;    benzidine;    X-ray structure;    magnetism.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

One mononuclear cobalt(II) compound of the type [Co(bnzd)2(NCS)2(OH2)2] (1) (bnzd = benzidine) has been isolated through a single-pot reaction of the molecular building components in MeOH-H2O solvent mixture at room temperature and characterized by physico-chemical and spectroscopic methods. The crystal structure of complex 1 has an octahedral geometry with trans, trans, trans orientations in the order (Na,Na), (Nt,Nt), (Ow,Ow) [Na = N(amine), Nt = N(thiocyanate) and Ow = O(water)]. In crystalline state, individual units of 1 are associated by weak cooperative O-H…N, O-H…S and N-H…S hydrogen bonds resulting in a 3D network structure. The compound is redox active and shows luminescence in MeOH solution. Thermal decomposition pattern of 1 reveals the presence of two coordinated water molecules. Variabletemperature magnetic susceptibility measurement shows significant orbital contribution and numerical matrix diagonalization method gives the best fit parameters: 𝛼 = A∗k = 1.43; 𝜆 = −130 cm-1; 𝛥 = −864 cm-1; TIP = 0.000975; R = 1.19 × 10−4.

【 授权许可】

Unknown