All reactions were carried out under
an oxygen-free, N2 atmosphere using standard Schlenk line
techniques. The starting materials were purchased from Alfa-Aesar
and Sigma-Aldrich Chemicals. Mn2(CO)10, trimethylamine-N-oxide, isonicotinoyl chloride hydrochloride, 1,2-ethanediol,
1,2-dihydroxybenzene, diethylene glycol, 1,2-ethylene diamine, 1,4-phenylenediamine, p-benzoquinone, n-butylamine, and phenethylamine
were used as received. The aminoquinone ligands (bbbq and bpbq) and
ditopic pyridyl ligands (etdp, pcadgd, pdi, bpce, and pdia) were synthesized
as reported in the literature.17 (link) Dichloromethane,
ethanol, methanol, tetrahydrofuran, and other solvents were dried
using standard methods and freshly distilled prior to use.18 IR spectra were recorded on a Nicolet iS10 Fourier
transform infrared spectrometer. Electronic absorption spectra were
obtained on a Shimadzu UV-2450 spectrophotometer. Emission spectra
were recorded on a Fluoromax-4 spectrofluorometer. Solvents used for
UV–vis and emission titration experiments were of spectral
grade. 1H NMR spectra were recorded on a Bruker Avance
400 MHz NMR spectrometer with tetramethylsilane as the internal reference.
Elemental analyses were performed using a Thermo Scientific Flash
2000 CHNS analyzer. ESI-mass spectra were taken on an Agilent 6530B
Q-TOF mass spectrometer.
an oxygen-free, N2 atmosphere using standard Schlenk line
techniques. The starting materials were purchased from Alfa-Aesar
and Sigma-Aldrich Chemicals. Mn2(CO)10, trimethylamine-N-oxide, isonicotinoyl chloride hydrochloride, 1,2-ethanediol,
1,2-dihydroxybenzene, diethylene glycol, 1,2-ethylene diamine, 1,4-phenylenediamine, p-benzoquinone, n-butylamine, and phenethylamine
were used as received. The aminoquinone ligands (bbbq and bpbq) and
ditopic pyridyl ligands (etdp, pcadgd, pdi, bpce, and pdia) were synthesized
as reported in the literature.17 (link) Dichloromethane,
ethanol, methanol, tetrahydrofuran, and other solvents were dried
using standard methods and freshly distilled prior to use.18 IR spectra were recorded on a Nicolet iS10 Fourier
transform infrared spectrometer. Electronic absorption spectra were
obtained on a Shimadzu UV-2450 spectrophotometer. Emission spectra
were recorded on a Fluoromax-4 spectrofluorometer. Solvents used for
UV–vis and emission titration experiments were of spectral
grade. 1H NMR spectra were recorded on a Bruker Avance
400 MHz NMR spectrometer with tetramethylsilane as the internal reference.
Elemental analyses were performed using a Thermo Scientific Flash
2000 CHNS analyzer. ESI-mass spectra were taken on an Agilent 6530B
Q-TOF mass spectrometer.