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Pansuriya PB, Friedrich HB, Maguire GEM. 4,6,10,12,16,18,22,24-Octa-O-methyl-2,8,14,20-tetra-pentylresorcin[4]arene. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2565. [PMID: 22058735 PMCID: PMC3201257 DOI: 10.1107/s1600536811034003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Accepted: 08/19/2011] [Indexed: 01/06/2023]
Abstract
The complete molecule of the title compound, C(56)H(80)O(8), is generated by a crystallographic inversion centre. The dihedral angle between the aromatic ring and the unique half of the molecule is 81.52 (16)°. There are no π-π inter-actions in the crystal structure.
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127
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Pansuriya P, Naidu H, Friedrich HB, Maguire GEM. 1,1'-(Propane-1,3-di-yl)bis-(3-phenyl-urea). Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2552. [PMID: 22064870 PMCID: PMC3201411 DOI: 10.1107/s1600536811035343] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 08/30/2011] [Indexed: 11/29/2022]
Abstract
The title compound, C17H20N4O2, has crystallographic inversion symmetry. In the crystal structure, intermolecular hydrogen bonding between adjacent urea groups gives rise to infinite polymeric chains diagonally across the bc plane. With a centroid–centroid distance of 3.295 (2) Å, π–π stacking is present in the crystal along the same plane.
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128
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M’thiruaine CM, Friedrich HB, Changamu EO, Omondi B. (μ-Formato-κO:O')bis-[dicarbon-yl(η-cyclo-penta-dien-yl)iron(II)] tetra-fluoridoborate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m1252. [PMID: 22058865 PMCID: PMC3200969 DOI: 10.1107/s1600536811032764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 08/12/2011] [Indexed: 05/31/2023]
Abstract
In the structure of the title compound [Fe(2)(C(5)H(5))(2)(CHO(2))(CO)(4)]BF(4), each Fe(II) atom is coordinated in a pseudo-octa-hedral three-legged piano-stool fashion. The cyclo-penta-dienyl ligand occupies three fac coordination sites while the two carbonyl ligands and formate O atom occupy the remaining three sites.
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129
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Pansuriya P, Friedrich HB, Maguire GEM. 3,3'-Diphenyl-1,1'-(butane-1,4-di-yl)dithio-urea. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o2380. [PMID: 22058981 PMCID: PMC3200795 DOI: 10.1107/s1600536811033071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 08/15/2011] [Indexed: 11/24/2022]
Abstract
The asymmetric unit of the title compound, C18H22N4S2, contains one half-molecule, the complete molecule being generated by crystallographic inversion symmetry. The crystal structure features two intermolecular N—H⋯S hydrogen-bonding interactions, the first generating an infinite chain along the b axis and the second an infinite chain along the a axis, together forming an interlocking structure.
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130
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Jali S, Friedrich HB, Julius GR. The effect of Mo(CO)6 as a co-catalyst in the carbonylation of methanol to methyl formate catalyzed by potassium methoxide under CO, syngas and H2 atmospheres. HP-IR observation of the methoxycarbonyl intermediate of Mo(CO)6. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2011.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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131
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M'thiruaine CM, Friedrich HB, Changamu EO, Bala MD. Acetonitrile-dicarbon-yl(η-penta-methyl-cyclo-penta-dien-yl)iron(II) tetra-fluorido-borate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m924. [PMID: 21836908 PMCID: PMC3151746 DOI: 10.1107/s1600536811021350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 06/02/2011] [Indexed: 11/10/2022]
Abstract
In the structure of the title compound, [Fe{η5-C5(CH3)5}(NCCH3)(CO)2]BF4, the arrangement of ligands around the Fe atom is in a pseudo-octahedral three-legged piano-stool fashion in which the pentamethylcyclopentadienyl (Cp*) ligand occupies three apical coordination sites, while the two carbonyl and one acetonitrile ligands form the basal axes of the coordination. The Fe—N bond length is 1.924 (3) Å and the Fe—Cp* centroid distance is 1.722 Å.
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132
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M'thiruaine CM, Friedrich HB, Changamu EO, Omondi B. (μ-Ethane-1,2-diamine-κN:N')bis-[dicarbon-yl(η-cyclo-penta-dien-yl)iron(II)] bis-(tetra-fluorido-borate). Acta Crystallogr Sect E Struct Rep Online 2011; 67:m485. [PMID: 21753996 PMCID: PMC3099767 DOI: 10.1107/s1600536811010154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Accepted: 03/17/2011] [Indexed: 11/25/2022]
Abstract
The asymmetric unit of the title compound, [Fe2(C5H5)2(C2H8N2)(CO)4](BF4)2, contains two half-cations, each located on a center of symmetry, and two tetrafluoridoborate anions. The iron atoms adopt a three-legged piano-stool geometry. All amine H atoms are involved in N—H⋯F hydrogen bonds, which consolidate the crystal packing along with weak C—H⋯O and C—H⋯F interactions.
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133
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Fadlalla MI, Friedrich HB, Maguire GEM, Omondi B. tert-Butyl 2-hy-droxy-3-(4-methyl-benzene-sulfonamido)-butano-ate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o648. [PMID: 21522400 PMCID: PMC3052123 DOI: 10.1107/s1600536811004934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Accepted: 02/09/2011] [Indexed: 05/30/2023]
Abstract
In the crystal of the title compound, C(15)H(23)NO(5)S, mol-ecules are linked through N-H⋯O and O-H⋯O hydrogen-bond inter-actions, resulting in centrosymmetric dimers in which the N-H⋯O inter-actions generate R(2) (2)(12) rings and the O-H⋯O inter-actions generate R(2) (2)(14) rings. Weak inter-molecular C-H⋯O inter-actions are also observed.
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134
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Komarsamy L, Bala MD, Friedrich HB, Omondi B. 2,6-Bis(tosyl-oxymeth-yl)pyridine. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o302. [PMID: 21522992 PMCID: PMC3051709 DOI: 10.1107/s160053681100050x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Accepted: 01/05/2011] [Indexed: 11/15/2022]
Abstract
The title compound, C(21)H(21)NO(6)S(2), is organized around a twofold axis parallel to the crystallographic c axis and containing the N atom and a C atom of the pyridine ring. The tosyl moiety and the pyridine ring are both essentially planar [maximum deviations 0.028 (2) and 0.020 (3) Å, respectively]; their mean planes form a dihedral angle of 33.0 (2)°.
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135
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M’thiruaine CM, Friedrich HB, Changamu EO, Bala MD. Synthesis and characterization of amine complexes of the cyclopentadienyliron dicarbonyl complex cation, [Cp(CO)2Fe]+. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.10.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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136
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Fadlalla MI, Friedrich HB, Maguire GEM, Omondi B. (2 R,3 S)-Methyl 2-hydroxy-3-(4-methylbenzenesulfonamido)-3-phenylpropanoate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o3279-80. [PMID: 21589560 PMCID: PMC3011734 DOI: 10.1107/s160053681004780x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2010] [Accepted: 11/17/2010] [Indexed: 11/21/2022]
Abstract
In the title molecule, C17H19NO5S, the p-tolyl ring is oriented approximately parallel to the phenyl ring [dihedral angle = 17.2 (1)°], resulting in an intramolecular π–π interation [centroid–centroid distance = 3.184 (10) Å]. In the crystal, molecules are linked through O—H⋯O and C—H⋯O hydrogen bonds, forming hydrogen-bonded sheets lying diagonally across the ac face.
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137
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Elkhalifa EA, Friedrich HB. On the Effect of Hydrocarbon/Oxygen Ratios During the Dehydrogenation of n-Octane Over a VMgO Catalyst. Catal Letters 2010. [DOI: 10.1007/s10562-010-0487-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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138
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Fadlalla MI, Friedrich HB, Maguire GEM, Bala MD. cis- N-(2-Hydroxycyclohexyl)- p-toluenesulfonamide. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o463. [PMID: 21579875 PMCID: PMC2979744 DOI: 10.1107/s1600536810002151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Accepted: 01/18/2010] [Indexed: 11/17/2022]
Abstract
There are two symmetry-independent molecules in the asymmetric unit of the title compound, C13H19NO3S. The cyclohexane rings in the two molecules adopt chair configurations. The hydroxy and amino groups on the cyclohexane ring assume axial and equatorial orientations, respectively, with respect to the plane of the ring. The crystal structure is stabilized by two intermolecular N—H⋯O and O—H⋯O hydrogen bonds from the two symmetry-independent molecules.
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139
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McKay MG, Cwele T, Friedrich HB, Maguire GEM. Microwave-assisted synthesis of a new series of resorcin[4]arene cavitand-capped porphyrin capsules. Org Biomol Chem 2009; 7:3958-68. [PMID: 19763298 DOI: 10.1039/b907547j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Capsule-shaped molecular receptors are fundamental to the modeling of biological host-guest interactions such as those characteristic of enzymatic processes. Among the more versatile and effective synthetic receptors are the hemicarcerand-type hosts. Herein we report the synthesis of six novel resorcin[4]arene cavitand-capped porphyrin capsules, in a new series of molecular capsules modeled on the classical hemicarcerands initially reported by Cram and co-workers. In the first reported instance of its utilisation in the preparation of supramolecularly-capped porphyrin host molecules, microwave (MW) irradiation was used (in conjunction with Adler conditions) in order to form the porphyrin cap in situ. Additionally, the yields obtained via these conditions exhibited a significant improvement, relative to the traditional refluxing protocol hitherto reported. Capsules 20-25 are indefinitely stable, and we observed that 22 and 25 possess the smallest rigidified cavities yet reported for resorcin[4]arene cavitand-capped porphyrin host molecules.
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140
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Friedrich HB, Maguire GEM, Martincigh BS, McKay MG, Pietersen LK. Redetermination of chlorido(2,2′:6′,2′′-terpyridine-κ 3
N, N′, N′′)gold(I) dichloride trihydrate at 173 K. Corrigendum. Acta Crystallogr Sect E Struct Rep Online 2009; 65:e13. [PMID: 21582971 PMCID: PMC2969645 DOI: 10.1107/s1600536809016122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Accepted: 04/29/2009] [Indexed: 12/05/2022]
Abstract
Corrigendum to Acta Cryst. (2008), E64, m1240. The title of the paper by Friedrich, Maguire, Martincigh, McKay & Pietersen [Acta Cryst. (2008), E64, m1240] is corrected.
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141
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Changamu EO, Friedrich HB, Fernandes MA. A structural investigation of the heterobimetallic carbocation complex [Cp∗(CO)2Fe{μ-CH2CH(CH2)3}W(CO)3Cp]BPh4. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.12.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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142
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Marimuthu T, Bala MD, Friedrich HB. Synthesis and characterization of a large bite angle iridium nixantphos complex. J COORD CHEM 2009. [DOI: 10.1080/00958970802626511] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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143
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Marimuthu T, Bala MD, Friedrich HB. 2,8-Dimethyl-10-p-tolyl-10H-phenoxaphosphine. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o828. [PMID: 21582548 PMCID: PMC2968818 DOI: 10.1107/s1600536809009817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Accepted: 03/17/2009] [Indexed: 12/03/2022]
Abstract
THE TITLE COMPOUND (SYSTEMATIC NAME 3,6-dimethyl-10-p-tolyl-9-oxa-10-phosphaanthracene), C(21)H(19)OP, is a precursor for the preparation of a bidentate xanthene-based ligand, in which the dihedral angle between the toluene ring and the phenoxaphosphine ring system is 83.26 (3)°. The geometry at the P atom is pyramidal, resulting in a longer C-P bond length as compared to the two ring C-P bonds.
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144
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Mc Kay MG, Friedrich HB, Howie RA, Maguire GEM. 7,11,15,28-Tetra-kis[(2-formyl-phen-oxy)methyl]-1,21,23,25-tetra-methyl-resorcin[4]arene cavitand ethyl acetate clathrate at 173 K. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o692-3. [PMID: 21582434 PMCID: PMC2968874 DOI: 10.1107/s1600536809007582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Accepted: 03/02/2009] [Indexed: 11/17/2022]
Abstract
The title compound, C68H56O16, was synthesized as a novel synthetic intermediate towards deeper and more elaborate resorcin[4]arene cavitands. The structure is the first reported example of a resorcin[4]arene cavitand bearing aromatic aldehyde functional groups at the extra-annular rim of the molecule. The 2-formylphenoxy residues are found to assume two different orientations above the molecular cavity. One half of the resorcin[4]arene cavitand molecule appears in the asymmetric unit; the complete resorcin[4]arene cavitand structure was generated across a mirror plane. In addition, a highly disordered ethyl acetate solvent molecule is present within the molecular cavity.
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145
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McKay MG, Friedrich HB, Howie RA, Maguire GEM. 7,11,15,28-Tetra-bromo-1,21,23,25-tetra-phenethyl-resorcin[4]arene cavitand-acetone-chloro-form (1/1.31/0.69) at 173 K. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o631-2. [PMID: 21582281 PMCID: PMC2968614 DOI: 10.1107/s1600536809006540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Accepted: 02/23/2009] [Indexed: 11/18/2022]
Abstract
The crystal structure of the title compound, C64H52Br4O8·1.31C3H6O·0.69CHCl3, is described. The structure has been reported previously [Bryant, Blanda, Vincenti & Cram (1991). J. Am. Chem. Soc.113, 2167–2172]; however, the lower data acquisition temperature results in an improved refinement model. In addition, the presence of residual acetone and (disordered) chloroform within the molecular structure of the title compound represents a new clathrate of the title compound. One half of the resorcin[4]arene cavitand molecule appears in the asymmetric unit; the complete resorcin[4]arene cavitand structure was generated across a mirror plane.
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146
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Jali S, Friedrich HB, Bala MD. Dicarbonyl(η 5-cyclopentadienyl)bis(trimethylphosphine)molybdenum(II) trifluoromethanesulfonate. Acta Crystallogr Sect E Struct Rep Online 2008; 64:m1401. [PMID: 21580851 PMCID: PMC2959586 DOI: 10.1107/s1600536808032662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Accepted: 10/09/2008] [Indexed: 11/11/2022]
Abstract
In the title compound, [Mo(C5H5)(CO)2(C3H9P)2]CF3SO3, the cationic complex displays a classical four-legged piano-stool square-pyramidal geometry with a trans configuration of the basal ligands around the Mo atom. The cyclopentadienyl (Cp) ligand occupies the apical position of the piano-stool configuration. The average Mo—P bond length of the two trans PMe3 ligands is 2.474 (5) Å and the Mo—Cp centroid distance is 2.003 (2) Å.
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147
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Marimuthu T, Bala MD, Friedrich HB. A P,O,P'-tridentate mixed-donor scorpionate ligand: 6-[4,6-bis-(diphenyl-phosphino)-10H-phenoxazin-10-yl]hexan-1-ol. Acta Crystallogr Sect E Struct Rep Online 2008; 64:o1984-5. [PMID: 21201184 PMCID: PMC2959466 DOI: 10.1107/s1600536808030134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Accepted: 09/18/2008] [Indexed: 11/25/2022]
Abstract
The title compound, C(42)H(39)NO(2)P(2), is a P,O,P'-tridentate scorpionate-type ligand and has one mol-ecule in the asymmetric unit. The angles involving the P atoms range from 100.21 (7) to 104.89 (7)°. The N-hexa-nol group was found to be disordered and was refined over two positions with final occupancies of 0.683 (3) and 0.317 (3) which affected the C-O and C-N bond lengths. The bond lengths for C-O range from 1.402 (2) to 1.415 (2) Å and for C-N from 1.410 (2) to 1.448 (3) Å for the major disorder component; the corresponding ranges for the minor disorder component are 1.429 (3)-1.408 (3) and 1.474 (3)-1.474 (4) Å.
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148
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Friedrich HB, Maguire GEM, Martincigh BS, McKay MG, Pietersen LK. Redetermination of chlorido(2,2':6',2''-terpyridine-κN,N',N'')gold(I) dichloride trihydrate at 173 K. Acta Crystallogr Sect E Struct Rep Online 2008; 64:m1240. [PMID: 21200998 PMCID: PMC2959318 DOI: 10.1107/s1600536808027943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2008] [Accepted: 09/01/2008] [Indexed: 05/30/2023]
Abstract
The redetermined structure of the title compound, [AuCl(C(15)H(11)N(3))]Cl(2)·3H(2)O, at 173 (2) K is reported. The structure displays O-H⋯Cl and O-H⋯O hydrogen bonding. The distance of one of the chloride ions from the gold(I) atom [5.047 (1) Å] differs from that determined previously.
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149
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Marimuthu T, Bala MD, Friedrich HB. Substitutional disorder in the substituted nixantphos ligand C(39)H(32)Br(0.27)Cl(0.73)NOP(2). Acta Crystallogr Sect E Struct Rep Online 2008; 64:o772. [PMID: 21202266 PMCID: PMC2961156 DOI: 10.1107/s1600536808007848] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Accepted: 03/21/2008] [Indexed: 11/12/2022]
Abstract
The structure of 10-(3-bromo/chloropropyl)-4,6-bis(diphenylphosphino)-10H-phenoxazine, C39H32Br0.27Cl0.73NOP2, shows chloro/bromo substitutional disorder in a 3:1 ratio. For application as a ligand in catalysis, the intramolecular P⋯P distance of 4.263 (2) Å is relevant. The phenoxazine ring system is essentially planar.
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150
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Marimuthu T, Bala MD, Friedrich HB. 4,6-Bis(diphenyl-phosphino)phenoxazine (nixantphos). Acta Crystallogr Sect E Struct Rep Online 2008; 64:o711. [PMID: 21202102 PMCID: PMC2960967 DOI: 10.1107/s1600536808006648] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2008] [Accepted: 03/10/2008] [Indexed: 11/10/2022]
Abstract
The title compound, C(36)H(27)NOP(2), has been reported as a ligand on rhodium for the catalysis of hydro-formyl-ation reactions. The key feature of the compound is the intra-molecular P⋯P distance of 4.255 (2) Å. The bond angles at the P atoms range from 99.93 (10) to 103.02 (10)°. The phenoxazine ring system is essentially planar and a non-crystallographic mirror plane through the N⋯O vector bis-ects the mol-ecule. The C-O bond lengths range from 1.388 (2) to 1.392 (2) Å and the C-N bond lengths range from 1.398 (3) to 1.403 (3) Å.
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