TY - JOUR
T1 - Highly selective CO2 uptake in uninodal 6-connected "mmo" nets based upon MO42- (M = Cr, Mo) pillars
AU - Mohamed, Mona H.
AU - Elsaidi, Sameh K.
AU - Wojtas, Lukasz
AU - Pham, Tony
AU - Forrest, Katherine A.
AU - Tudor, Brant
AU - Space, Brian
AU - Zaworotko, Michael J.
PY - 2012/12/5
Y1 - 2012/12/5
N2 - A novel 48.67 topology metal-organic material (MOM) platform of formula [M(bpe)2(M′O4)] (M = Co or Ni; bpe = 1,2-bis(4-pyridyl)ethene; M′ = Mo or Cr) has been synthesized and evaluated in the context of gas sorption. These MOMs have been assigned RCSR code mmo and are uninodal 6-connected nets. [Ni(bpe)2(MoO 4)], MOOFOUR-1-Ni, and its chromate analogue, CROFOUR-1-Ni, exhibit high CO2 affinity and selectivity, especially at low loading. This behavior can be attributed to exceptionally high isosteric heats of adsorption (Qst) of CO2 in MOOFOUR-1-Ni and CROFOUR-1-Ni of ∼56 and ∼50 kJ/mol, respectively, at zero loading. These results were validated by molecular simulations which indicate that the electrostatics of these inorganic anions affords attractions toward CO2 that are comparable to those of unsaturated metal centers.
AB - A novel 48.67 topology metal-organic material (MOM) platform of formula [M(bpe)2(M′O4)] (M = Co or Ni; bpe = 1,2-bis(4-pyridyl)ethene; M′ = Mo or Cr) has been synthesized and evaluated in the context of gas sorption. These MOMs have been assigned RCSR code mmo and are uninodal 6-connected nets. [Ni(bpe)2(MoO 4)], MOOFOUR-1-Ni, and its chromate analogue, CROFOUR-1-Ni, exhibit high CO2 affinity and selectivity, especially at low loading. This behavior can be attributed to exceptionally high isosteric heats of adsorption (Qst) of CO2 in MOOFOUR-1-Ni and CROFOUR-1-Ni of ∼56 and ∼50 kJ/mol, respectively, at zero loading. These results were validated by molecular simulations which indicate that the electrostatics of these inorganic anions affords attractions toward CO2 that are comparable to those of unsaturated metal centers.
UR - http://www.scopus.com/inward/record.url?scp=84870660210&partnerID=8YFLogxK
U2 - 10.1021/ja309452y
DO - 10.1021/ja309452y
M3 - Article
AN - SCOPUS:84870660210
SN - 0002-7863
VL - 134
SP - 19556
EP - 19559
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 48
ER -