Calcium Complexes Having Different Amidinate Ligands ‐ Synthesis and Structural Diversity

Content Provider	Semantic Scholar
Author	Srinivas Anga Bhattacharjee, Jayeeta Banerjee, Indrani Nayek, Hari Pada Panda, Tarun K.
Copyright Year	2016
Abstract	A one-pot reaction of α-diimine ligand 1,4-disubstituted diazabutadienes (DAD) with potassium benzyl and anhydrous calcium iodide in 1:1:1 molar ratio afforded unprecedented 3-phenylprop-2-ene-di-amido calcium compound [κ2-(THF)4Ca{DippNC(=CHPh)CH2NDipp}] (1) (Dipp = 2,6-diisopropylphenyl) in good yield. The solid-state structure of the compound 1 revealed the formation of dianionic 3-phenylprop-2-ene-di-amido ligand having an exocyclic olefinic bond derived from neutral α-diimine fragment. However, analogous reactions with three different carbodiimides (RN=C=NR; R=Cy, iPr and tBu) with alkyl potassium and anhydrous calcium diiodide yielded corresponding homoleptic calcium compounds with amidinato ligand [κ2-(THF)2Ca{RN=C(CH2Ph)NR}2] [R=Cy (2), iPr (3) and tBu (4)]. A separate reaction of DAD ligand, LiCH2SiMe3 and anhydrous ZnCl2 in diethylether solvent produced tri-coordinated zinc compound [κ2- {DippN=C(CH2SiMe3)CH2NDipp}Zn[κ1-{DippN=C(CH2SiMe3)CH2N-Dipp}] (5) having amidinato moieties in the zinc coordination sphere in high yield. Molecular structures of compounds 2–5 in their solid states were also established.
Starting Page	2014
Ending Page	2020
Page Count	7
File Format	PDF HTM / HTML
DOI	10.1002/slct.201600299
Volume Number	1
Alternate Webpage(s)	http://raiith.iith.ac.in/2482/1/Anga_et_al-2016-ChemistrySelect.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article