TY - JOUR
T1 - Synthesis, molecular and crystalline architectures, and properties of a mononuclear complex [Co II (benzidine) 2 (NCS) 2 (OH 2 ) 2 ]
AU - Kundu, Subhasish
AU - Roy, Subhasis
AU - Bhar, Kishalay
AU - Ghosh, Rajarshi
AU - Lin, Chia Her
AU - Ribas, Joan
AU - Ghosh, Barindra Kumar
N1 - Funding Information:
Financial support from the Council of Scientific and Industrial Research (CSIR) and the Department of Science and Technology (DST), New Delhi, India is gratefully acknowledged. KB thanks the CSIR, and SR thanks the University Grants Commission (UGC), New Delhi, India for fellowships. JR thanks the Spanish Government (Project CTQ2009/07264/BQU) and ‘Servei de Mesures Magnètiques’ (University of Barcelona). Authors also thank Dr. J Cano (University of Valencia, Spain) for the fit of the susceptibility data of compound 1 using the diagonalization process (see reference 41).
PY - 2013/7
Y1 - 2013/7
N2 - 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,N t), (Ow,Ow) [Na = N(amine), N t = 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. Variable-temperature magnetic susceptibility measurement shows significant orbital contribution and numerical matrix diagonalization method gives the best fit parameters: α = Ak = 1.43; λ = -130 cm - 1; Δ = - 864 cm - 1; TIP = 0.000975; R = 1.19 × 10 - 4. [Figure not available: see fulltext.]
AB - 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,N t), (Ow,Ow) [Na = N(amine), N t = 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. Variable-temperature magnetic susceptibility measurement shows significant orbital contribution and numerical matrix diagonalization method gives the best fit parameters: α = Ak = 1.43; λ = -130 cm - 1; Δ = - 864 cm - 1; TIP = 0.000975; R = 1.19 × 10 - 4. [Figure not available: see fulltext.]
KW - Cobalt(II)
KW - X-ray structure
KW - benzidine
KW - magnetism
KW - thiocyanate
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U2 - 10.1007/s12039-013-0457-z
DO - 10.1007/s12039-013-0457-z
M3 - Article
AN - SCOPUS:84883612830
SN - 0974-3626
VL - 125
SP - 723
EP - 730
JO - Journal of Chemical Sciences
JF - Journal of Chemical Sciences
IS - 4
ER -