Konishi, Akihito et al. published new experimental results with the assistance of cas: 2235-01-0

Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. SDS of cas: 2235-01-0 The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Konishi, Akihito;Okada, Yui;Nakano, Motohiro;Sugisaki, Kenji;Sato, Kazunobu;Takui, Takeji;Yasuda, Makoto published 《Synthesis and Characterization of Dibenzo[a,f]pentalene: Harmonization of the Antiaromatic and Singlet Biradical Character》. The research results were published in《Journal of the American Chemical Society》 in 2017.SDS of cas: 2235-01-0 The article conveys some information:

Mesityl derivatives of the unknown dibenzopentalene isomer dibenzo[a,f]pentalene were synthesized. The mol. geometry and phys. properties of dibenzo[a,f]pentalene were investigated. Dibenzo[a,f]pentalene combines a large antiarom. and appreciable singlet open-shell character, properties not shared by well-known isomer dibenzo[a,e]pentalene. To complete the study, the researchers used Dimethoxydiphenylmethane (cas: 2235-01-0) .

Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. SDS of cas: 2235-01-0 The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem