PMID- 28772539
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200930
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 10
IP  - 2
DP  - 2017 Feb 14
TI  - Synthesis, Crystal Structure, and Magnetic Properties of a New Mixed Metal 
      (Co(II), Ni(II)) Cubane.
LID - 10.3390/ma10020178 [doi]
LID - 178
AB  - The mixed Co(II)/Ni(II) complex, [Co(2.67)Ni(1.33)L(4)(CH(3)COO)(2)][BPh(4)](2).0.75H(2)O 
      where HL = 4-(salicylaldimine)antipyrine, was isolated as an orange solid from 
      the reaction of 4-(salicylaldimine)antipyrine, with mixed cobalt(II) acetate and 
      nickel(II) acetate in ethanol. The complex was characterized by Frustrated Total 
      Internal Reflection (FTIR), UltraViolet Visible spectroscopy (UV-Vis), X-ray 
      single crystal diffraction, and by elemental analysis. The complex is composed of 
      two symmetry independent cationic units, A and B. The two units are essentially 
      isostructural; nevertheless, small differences exist between them. The units 
      contain four metal atoms, arranged at the corners of a distorted cubane-like core 
      alternately with phenoxy oxygen of the Schiff base. The overall eight corners 
      occupied by metal ions in the asymmetric unit are shared between cobalt and 
      nickel in a 5.33:2.67 ratio. Each metal divalent cation binds three coordinated 
      sites from the corresponding tridentate Schiff base ligand, the fourth one is 
      bound by the acetate oxygen, the fifth and the sixth donor sites come from the 
      phenolate oxygens of other Schiff base ligands. Intermolecular hydrogen bonds 
      join the complexes to the water molecules present in the crystal packing. The 
      magnetic characterization was carried out for this new complex and for its 
      isostructural counterpart containing only cobalt ions. The magnetic measurements 
      for the cobalt(II)/nickel(II) mixed compound indicate either antiferromagnetic 
      interactions among the two cubanes or an anisotropic contribution, whereas a 
      ferromagnetic interaction is observed within the cubane, for both the complexes, 
      as expected by geometrical considerations. A comparison between the magnetic 
      properties of the pure cobalt(II) derivative and similar systems discussed in 
      literature, is presented.
FAU - Elmehdawi, Ramadan Mohamed
AU  - Elmehdawi RM
AD  - Chemistry Department, Tripoli-University, Tripoli, Libya. elmahdawi@yahoo.com.
FAU - El-Kaheli, Mohamed Nasir
AU  - El-Kaheli MN
AD  - Chemistry Department, Tripoli-University, Tripoli, Libya. manskahl@yahoo.com.
FAU - Abuhmaiera, Ramadan Gamodi
AU  - Abuhmaiera RG
AD  - Chemistry Department, Tripoli-University, Tripoli, Libya. Rouhmaa@yahoo.com.
FAU - Treish, Fathia Ali
AU  - Treish FA
AD  - Chemistry Department, Tripoli-University, Tripoli, Libya. Treish@gmail.com.
FAU - Ben Younes, Mufida El Mabruk
AU  - Ben Younes MEM
AD  - Chemistry Department, Tripoli-University, Tripoli, Libya. mbenyouns@yahoo.com.
FAU - Bazzicalupi, Carla
AU  - Bazzicalupi C
AD  - Chemistry Department, "U. Schiff", University of Florence, Sesto Fiorentino (Fl) 
      50019, Italy. carla.bazzicalupi@unifi.it.
FAU - Guerri, Annalisa
AU  - Guerri A
AD  - Chemistry Department, "U. Schiff", University of Florence, Sesto Fiorentino (Fl) 
      50019, Italy. annalisa.guerri@unifi.it.
FAU - Caneschi, Andrea
AU  - Caneschi A
AD  - Chemistry Department, "U. Schiff", University of Florence, Sesto Fiorentino (Fl) 
      50019, Italy. andrea.caneschi@unifi.it.
AD  - INSTM-Research Unit at University of Florence, Sesto Fiorentino (Fl) 50019, 
      Italy. andrea.caneschi@unifi.it.
FAU - Amjad, Asma
AU  - Amjad A
AD  - Chemistry Department, "U. Schiff", University of Florence, Sesto Fiorentino (Fl) 
      50019, Italy. a.amjad@knights.ucf.edu.
AD  - INSTM-Research Unit at University of Florence, Sesto Fiorentino (Fl) 50019, 
      Italy. a.amjad@knights.ucf.edu.
LA  - eng
PT  - Journal Article
DEP - 20170214
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC5459200
OTO - NOTNLM
OT  - Schiff base
OT  - crystal structure
OT  - cubane
OT  - magnetic properties
OT  - mixed Co/Ni
COIS- The authors declare no conflict of interest.
EDAT- 2017/08/05 06:00
MHDA- 2017/08/05 06:01
PMCR- 2017/02/14
CRDT- 2017/08/05 06:00
PHST- 2017/01/08 00:00 [received]
PHST- 2017/02/03 00:00 [revised]
PHST- 2017/02/04 00:00 [accepted]
PHST- 2017/08/05 06:00 [entrez]
PHST- 2017/08/05 06:00 [pubmed]
PHST- 2017/08/05 06:01 [medline]
PHST- 2017/02/14 00:00 [pmc-release]
AID - ma10020178 [pii]
AID - materials-10-00178 [pii]
AID - 10.3390/ma10020178 [doi]
PST - epublish
SO  - Materials (Basel). 2017 Feb 14;10(2):178. doi: 10.3390/ma10020178.